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At long last, import the bcmath library, by Phil Nelson

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This commit is contained in:
Zeev Suraski 2000-11-22 20:20:02 +00:00
parent be6ab20415
commit c476bce2f1
50 changed files with 6932 additions and 67 deletions
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2
NEWS
View file

@ -2,6 +2,8 @@ PHP 4.0 NEWS
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
?? ??? 2000, Version 4.0.4
- Integrated the Phil Nelson's bc math library routines into PHP, now that
the license allows it (Phil Nelson <phil@cs.wwu.edu>)
- Added the xslt_set_error_handler() function to the Sablotron extension.
(Sterling)
- Improved Sablotron's error handling system allowing you to catch all

164
ext/bcmath/bcmath.c
View file

@ -22,9 +22,9 @@
#if WITH_BCMATH
#include "number.h"
#include "ext/standard/info.h"
#include "php_bcmath.h"
#include "ext/bcmath/libbcmath/src/bcmath.h"
function_entry bcmath_functions[] = {
PHP_FE(bcadd, NULL)
@ -58,16 +58,44 @@ ZEND_GET_MODULE(bcmath)
static long bc_precision;
#endif
/* Storage used for special numbers. */
bc_num _zero_;
bc_num _one_;
bc_num _two_;
/* Make a copy of a number! Just increments the reference count! */
bc_num copy_num (bc_num num)
{
num->n_refs++;
return num;
}
/* Initialize a number NUM by making it a copy of zero. */
void init_num (bc_num *num)
{
*num = copy_num (_zero_);
}
PHP_MINIT_FUNCTION(bcmath)
{
extern bc_num _zero_;
extern bc_num _one_;
extern bc_num _two_;
init_numbers();
_zero_ = bc_new_num (1,0);
_one_ = bc_new_num (1,0);
_one_->n_value[0] = 1;
_two_ = bc_new_num (1,0);
_two_->n_value[0] = 2;
persist_alloc(_zero_);
persist_alloc(_one_);
persist_alloc(_two_);
persist_alloc(_zero_->n_ptr);
persist_alloc(_one_->n_ptr);
persist_alloc(_two_->n_ptr);
return SUCCESS;
}
@ -76,7 +104,9 @@ PHP_MINIT_FUNCTION(bcmath)
PHP_MSHUTDOWN_FUNCTION(bcmath)
{
destruct_numbers();
bc_free_num(&_zero_);
bc_free_num(&_one_);
bc_free_num(&_two_);
return SUCCESS;
}
@ -124,18 +154,18 @@ PHP_FUNCTION(bcadd)
}
convert_to_string_ex(left);
convert_to_string_ex(right);
init_num(&first);
init_num(&second);
init_num(&result);
str2num(&first,(*left)->value.str.val,scale);
str2num(&second,(*right)->value.str.val,scale);
bc_init_num(&first);
bc_init_num(&second);
bc_init_num(&result);
bc_str2num(&first,(*left)->value.str.val,scale);
bc_str2num(&second,(*right)->value.str.val,scale);
bc_add (first,second,&result, scale);
return_value->value.str.val = num2str(result);
return_value->value.str.val = bc_num2str(result);
return_value->value.str.len = strlen(return_value->value.str.val);
return_value->type = IS_STRING;
free_num(&first);
free_num(&second);
free_num(&result);
bc_free_num(&first);
bc_free_num(&second);
bc_free_num(&result);
return;
}
/* }}} */
@ -167,18 +197,18 @@ PHP_FUNCTION(bcsub)
}
convert_to_string_ex(left);
convert_to_string_ex(right);
init_num(&first);
init_num(&second);
init_num(&result);
str2num(&first,(*left)->value.str.val,scale);
str2num(&second,(*right)->value.str.val,scale);
bc_init_num(&first);
bc_init_num(&second);
bc_init_num(&result);
bc_str2num(&first,(*left)->value.str.val,scale);
bc_str2num(&second,(*right)->value.str.val,scale);
bc_sub (first,second,&result, scale);
return_value->value.str.val = num2str(result);
return_value->value.str.val = bc_num2str(result);
return_value->value.str.len = strlen(return_value->value.str.val);
return_value->type = IS_STRING;
free_num(&first);
free_num(&second);
free_num(&result);
bc_free_num(&first);
bc_free_num(&second);
bc_free_num(&result);
return;
}
/* }}} */
@ -210,18 +240,18 @@ PHP_FUNCTION(bcmul)
}
convert_to_string_ex(left);
convert_to_string_ex(right);
init_num(&first);
init_num(&second);
init_num(&result);
str2num(&first,(*left)->value.str.val,scale);
str2num(&second,(*right)->value.str.val,scale);
bc_init_num(&first);
bc_init_num(&second);
bc_init_num(&result);
bc_str2num(&first,(*left)->value.str.val,scale);
bc_str2num(&second,(*right)->value.str.val,scale);
bc_multiply (first,second,&result, scale);
return_value->value.str.val = num2str(result);
return_value->value.str.val = bc_num2str(result);
return_value->value.str.len = strlen(return_value->value.str.val);
return_value->type = IS_STRING;
free_num(&first);
free_num(&second);
free_num(&result);
bc_free_num(&first);
bc_free_num(&second);
bc_free_num(&result);
return;
}
/* }}} */
@ -253,14 +283,14 @@ PHP_FUNCTION(bcdiv)
}
convert_to_string_ex(left);
convert_to_string_ex(right);
init_num(&first);
init_num(&second);
init_num(&result);
str2num(&first,(*left)->value.str.val,scale);
str2num(&second,(*right)->value.str.val,scale);
bc_init_num(&first);
bc_init_num(&second);
bc_init_num(&result);
bc_str2num(&first,(*left)->value.str.val,scale);
bc_str2num(&second,(*right)->value.str.val,scale);
switch (bc_divide (first,second,&result, scale)) {
case 0: /* OK */
return_value->value.str.val = num2str(result);
return_value->value.str.val = bc_num2str(result);
return_value->value.str.len = strlen(return_value->value.str.val);
return_value->type = IS_STRING;
break;
@ -268,9 +298,9 @@ PHP_FUNCTION(bcdiv)
php_error(E_WARNING,"Division by zero");
break;
}
free_num(&first);
free_num(&second);
free_num(&result);
bc_free_num(&first);
bc_free_num(&second);
bc_free_num(&result);
return;
}
/* }}} */
@ -294,14 +324,14 @@ PHP_FUNCTION(bcmod)
}
convert_to_string_ex(left);
convert_to_string_ex(right);
init_num(&first);
init_num(&second);
init_num(&result);
str2num(&first,(*left)->value.str.val,0);
str2num(&second,(*right)->value.str.val,0);
bc_init_num(&first);
bc_init_num(&second);
bc_init_num(&result);
bc_str2num(&first,(*left)->value.str.val,0);
bc_str2num(&second,(*right)->value.str.val,0);
switch (bc_modulo(first,second,&result, 0)) {
case 0:
return_value->value.str.val = num2str(result);
return_value->value.str.val = bc_num2str(result);
return_value->value.str.len = strlen(return_value->value.str.val);
return_value->type = IS_STRING;
break;
@ -309,9 +339,9 @@ PHP_FUNCTION(bcmod)
php_error(E_WARNING,"Division by zero");
break;
}
free_num(&first);
free_num(&second);
free_num(&result);
bc_free_num(&first);
bc_free_num(&second);
bc_free_num(&result);
return;
}
/* }}} */
@ -343,18 +373,18 @@ PHP_FUNCTION(bcpow)
}
convert_to_string_ex(left);
convert_to_string_ex(right);
init_num(&first);
init_num(&second);
init_num(&result);
str2num(&first,(*left)->value.str.val,scale);
str2num(&second,(*right)->value.str.val,scale);
bc_init_num(&first);
bc_init_num(&second);
bc_init_num(&result);
bc_str2num(&first,(*left)->value.str.val,scale);
bc_str2num(&second,(*right)->value.str.val,scale);
bc_raise (first,second,&result, scale);
return_value->value.str.val = num2str(result);
return_value->value.str.val = bc_num2str(result);
return_value->value.str.len = strlen(return_value->value.str.val);
return_value->type = IS_STRING;
free_num(&first);
free_num(&second);
free_num(&result);
bc_free_num(&first);
bc_free_num(&second);
bc_free_num(&result);
return;
}
/* }}} */
@ -385,16 +415,16 @@ PHP_FUNCTION(bcsqrt)
break;
}
convert_to_string_ex(left);
init_num(&result);
str2num(&result,(*left)->value.str.val,scale);
bc_init_num(&result);
bc_str2num(&result,(*left)->value.str.val,scale);
if (bc_sqrt (&result, scale) != 0) {
return_value->value.str.val = num2str(result);
return_value->value.str.val = bc_num2str(result);
return_value->value.str.len = strlen(return_value->value.str.val);
return_value->type = IS_STRING;
} else {
php_error(E_WARNING,"Square root of negative number");
}
free_num(&result);
bc_free_num(&result);
return;
}
/* }}} */
@ -427,16 +457,16 @@ PHP_FUNCTION(bccomp)
convert_to_string_ex(left);
convert_to_string_ex(right);
init_num(&first);
init_num(&second);
bc_init_num(&first);
bc_init_num(&second);
str2num(&first,(*left)->value.str.val,scale);
str2num(&second,(*right)->value.str.val,scale);
bc_str2num(&first,(*left)->value.str.val,scale);
bc_str2num(&second,(*right)->value.str.val,scale);
return_value->value.lval = bc_compare(first,second);
return_value->type = IS_LONG;
free_num(&first);
free_num(&second);
bc_free_num(&first);
bc_free_num(&second);
return;
}
/* }}} */

3
ext/bcmath/libbcmath/AUTHORS Normal file
View file

@ -0,0 +1,3 @@
Phil Nelson <philnelson@acm.org> wrote bcmath library.

515
ext/bcmath/libbcmath/COPYING.LIB Normal file
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@ -0,0 +1,515 @@
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Version 2.1, February 1999
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59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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^L
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^L
How to Apply These Terms to Your New Libraries
If you develop a new library, and you want it to be of the greatest
possible use to the public, we recommend making it free software that
everyone can redistribute and change. You can do so by permitting
redistribution under these terms (or, alternatively, under the terms
of the ordinary General Public License).
To apply these terms, attach the following notices to the library.
It is safest to attach them to the start of each source file to most
effectively convey the exclusion of warranty; and each file should
have at least the "copyright" line and a pointer to where the full
notice is found.
<one line to give the library's name and a brief idea of what it
does.>
Copyright (C) <year> <name of author>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
Also add information on how to contact you by electronic and paper
mail.
You should also get your employer (if you work as a programmer) or
your
school, if any, to sign a "copyright disclaimer" for the library, if
necessary. Here is a sample; alter the names:
Yoyodyne, Inc., hereby disclaims all copyright interest in the
library `Frob' (a library for tweaking knobs) written by James
Random Hacker.
<signature of Ty Coon>, 1 April 1990
Ty Coon, President of Vice
That's all there is to it!

10
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@ -0,0 +1,10 @@
Wed Jun 7 09:39:02 2000 Phil Nelson <phil@cs.wwu.edu>
* configure.in and many others: version number now at 0.2.
Many other changes/additions for getting a distribution
to work.
2000-05-21 Phil Nelson <phil@cs.wwu.edu>
* Initial setup of bcmath library., calling it version 0.1.

21
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@ -0,0 +1,21 @@
BCMATH FAQ:
1) Why BCMATH?
The math routines of GNU bc become more generally useful in a
library form. By separating the BCMATH library from GNU bc,
GNU bc can be under the GPL and BCMATH can be under the LGPL.
2) Why BCMATH when GMP exists?
GMP has "integers" (no digits after a decimal), "rational numbers"
(stored as 2 integers) and "floats". None of these will correctly
represent a POSIX BC number. Floats are the closest, but will not
behave correctly for many computations. For example, BC numbers have
a "scale" that represent the number of digits to represent after the
decimal point. The multiplying two of these numbers requires one to
calculate an exact number of digits after the decimal point regardless
of the number of digits in the integer part. GMP floats have a
"fixed, but arbitrary" mantissa and so multiplying two floats will end
up dropping digits BC must calculate.

9
ext/bcmath/libbcmath/INSTALL Normal file
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Currently, only libbcmath.a is built. To build and install it, do
configure
make
make install
Typical configure parameters are available. (e.g. PREFIX)
Bugs and comments to philnelson@acm.org.

12
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## Process this file with automake to produce Makefile.in
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dist-hook:
cp $(srcdir)/doc/bcmath.1 $(distdir)/doc
cp $(srcdir)/src/private.h $(distdir)/src
cp $(srcdir)/FAQ $(distdir)

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# Makefile.in generated automatically by automake 1.4 from Makefile.am
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# This Makefile.in is free software; the Free Software Foundation
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# with or without modifications, as long as this notice is preserved.
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3
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NEWS for bcmath library:
May 2000: The library is created.

9
ext/bcmath/libbcmath/README Normal file
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This is bcmath, a library of arbitrary precision math routines.
These routines, in a different form, are the routines that to
the arbitrary precision calculations for GNU bc and GNU dc.
This library is provided to make these routines useful in a
larger context with less restrictions on the use of them.
These routines do not duplicate functionality of the GNU gmp
library. gmp is similar, but the actual computation is different.

9
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/* PACKAGE name */
#undef PACKAGE
/* Package VERSION number */
#undef VERSION
/* Define to `size_t' if <sys/types.h> and <stddef.h> don't define. */
#undef ptrdiff_t

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dnl aclocal.m4 generated automatically by aclocal 1.4
dnl Copyright (C) 1994, 1995-8, 1999 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
dnl with or without modifications, as long as this notice is preserved.
dnl This program is distributed in the hope that it will be useful,
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dnl and everything past the last "/".
AC_OUTPUT_COMMANDS(changequote(<<,>>)dnl
ifelse(patsubst(<<$1>>, <<[^ ]>>, <<>>), <<>>,
<<test -z "<<$>>CONFIG_HEADERS" || echo timestamp > patsubst(<<$1>>, <<^\([^:]*/\)?.*>>, <<\1>>)stamp-h<<>>dnl>>,
<<am_indx=1
for am_file in <<$1>>; do
case " <<$>>CONFIG_HEADERS " in
*" <<$>>am_file "*<<)>>
echo timestamp > `echo <<$>>am_file | sed -e 's%:.*%%' -e 's%[^/]*$%%'`stamp-h$am_indx
;;
esac
am_indx=`expr "<<$>>am_indx" + 1`
done<<>>dnl>>)
changequote([,]))])

41
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@ -0,0 +1,41 @@
/* config.h.in. Generated automatically from configure.in by autoheader. */
/* Define to empty if the keyword does not work. */
#undef const
/* Define to `unsigned' if <sys/types.h> doesn't define. */
#undef size_t
/* Define if you have the ANSI C header files. */
#undef STDC_HEADERS
/* Define to `size_t' if <sys/types.h> and <stddef.h> don't define. */
#undef ptrdiff_t
/* Define if you have the <lib.h> header file. */
#undef HAVE_LIB_H
/* Define if you have the <limits.h> header file. */
#undef HAVE_LIMITS_H
/* Define if you have the <stdarg.h> header file. */
#undef HAVE_STDARG_H
/* Define if you have the <stddef.h> header file. */
#undef HAVE_STDDEF_H
/* Define if you have the <stdlib.h> header file. */
#undef HAVE_STDLIB_H
/* Define if you have the <string.h> header file. */
#undef HAVE_STRING_H
/* Define if you have the <unistd.h> header file. */
#undef HAVE_UNISTD_H
/* Name of package */
#undef PACKAGE
/* Version number of package */
#undef VERSION

1859
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File diff suppressed because it is too large Load diff

18
ext/bcmath/libbcmath/configure.in Normal file
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@ -0,0 +1,18 @@
dnl Process this file with autoconf to produce a configure script.
AC_INIT(doc/bcmath.1)
AM_INIT_AUTOMAKE("bcmath", "0.2")
AM_CONFIG_HEADER(config.h)
AC_PROG_CC
AC_PROG_INSTALL
AC_PROG_RANLIB
AC_PROG_MAKE_SET
AC_CHECK_HEADERS(stdarg.h stddef.h stdlib.h string.h limits.h unistd.h lib.h)
AC_C_CONST
AC_TYPE_SIZE_T
AC_CHECK_TYPE(ptrdiff_t, size_t)
AC_OUTPUT(Makefile src/Makefile doc/Makefile)

3
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# Documentation makefile
MAINTAINERCLEANFILES= Makefile.in

171
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# Makefile.in generated automatically by automake 1.4 from Makefile.am
# Copyright (C) 1994, 1995-8, 1999 Free Software Foundation, Inc.
# This Makefile.in is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
# with or without modifications, as long as this notice is preserved.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
# PARTICULAR PURPOSE.
# Documentation makefile
SHELL = @SHELL@
srcdir = @srcdir@
top_srcdir = @top_srcdir@
VPATH = @srcdir@
prefix = @prefix@
exec_prefix = @exec_prefix@
bindir = @bindir@
sbindir = @sbindir@
libexecdir = @libexecdir@
datadir = @datadir@
sysconfdir = @sysconfdir@
sharedstatedir = @sharedstatedir@
localstatedir = @localstatedir@
libdir = @libdir@
infodir = @infodir@
mandir = @mandir@
includedir = @includedir@
oldincludedir = /usr/include
DESTDIR =
pkgdatadir = $(datadir)/@PACKAGE@
pkglibdir = $(libdir)/@PACKAGE@
pkgincludedir = $(includedir)/@PACKAGE@
top_builddir = ..
ACLOCAL = @ACLOCAL@
AUTOCONF = @AUTOCONF@
AUTOMAKE = @AUTOMAKE@
AUTOHEADER = @AUTOHEADER@
INSTALL = @INSTALL@
INSTALL_PROGRAM = @INSTALL_PROGRAM@ $(AM_INSTALL_PROGRAM_FLAGS)
INSTALL_DATA = @INSTALL_DATA@
INSTALL_SCRIPT = @INSTALL_SCRIPT@
transform = @program_transform_name@
NORMAL_INSTALL = :
PRE_INSTALL = :
POST_INSTALL = :
NORMAL_UNINSTALL = :
PRE_UNINSTALL = :
POST_UNINSTALL = :
CC = @CC@
MAKEINFO = @MAKEINFO@
PACKAGE = @PACKAGE@
RANLIB = @RANLIB@
VERSION = @VERSION@
MAINTAINERCLEANFILES = Makefile.in
mkinstalldirs = $(SHELL) $(top_srcdir)/mkinstalldirs
CONFIG_HEADER = ../config.h
CONFIG_CLEAN_FILES =
DIST_COMMON = Makefile.am Makefile.in
DISTFILES = $(DIST_COMMON) $(SOURCES) $(HEADERS) $(TEXINFOS) $(EXTRA_DIST)
TAR = tar
GZIP_ENV = --best
all: all-redirect
.SUFFIXES:
$(srcdir)/Makefile.in: Makefile.am $(top_srcdir)/configure.in $(ACLOCAL_M4)
cd $(top_srcdir) && $(AUTOMAKE) --foreign --include-deps doc/Makefile
Makefile: $(srcdir)/Makefile.in $(top_builddir)/config.status
cd $(top_builddir) \
&& CONFIG_FILES=$(subdir)/$@ CONFIG_HEADERS= $(SHELL) ./config.status
tags: TAGS
TAGS:
distdir = $(top_builddir)/$(PACKAGE)-$(VERSION)/$(subdir)
subdir = doc
distdir: $(DISTFILES)
@for file in $(DISTFILES); do \
d=$(srcdir); \
if test -d $$d/$$file; then \
cp -pr $$/$$file $(distdir)/$$file; \
else \
test -f $(distdir)/$$file \
|| ln $$d/$$file $(distdir)/$$file 2> /dev/null \
|| cp -p $$d/$$file $(distdir)/$$file || :; \
fi; \
done
info-am:
info: info-am
dvi-am:
dvi: dvi-am
check-am: all-am
check: check-am
installcheck-am:
installcheck: installcheck-am
install-exec-am:
install-exec: install-exec-am
install-data-am:
install-data: install-data-am
install-am: all-am
@$(MAKE) $(AM_MAKEFLAGS) install-exec-am install-data-am
install: install-am
uninstall-am:
uninstall: uninstall-am
all-am: Makefile
all-redirect: all-am
install-strip:
$(MAKE) $(AM_MAKEFLAGS) AM_INSTALL_PROGRAM_FLAGS=-s install
installdirs:
mostlyclean-generic:
clean-generic:
distclean-generic:
-rm -f Makefile $(CONFIG_CLEAN_FILES)
-rm -f config.cache config.log stamp-h stamp-h[0-9]*
maintainer-clean-generic:
-test -z "$(MAINTAINERCLEANFILES)" || rm -f $(MAINTAINERCLEANFILES)
mostlyclean-am: mostlyclean-generic
mostlyclean: mostlyclean-am
clean-am: clean-generic mostlyclean-am
clean: clean-am
distclean-am: distclean-generic clean-am
distclean: distclean-am
maintainer-clean-am: maintainer-clean-generic distclean-am
@echo "This command is intended for maintainers to use;"
@echo "it deletes files that may require special tools to rebuild."
maintainer-clean: maintainer-clean-am
.PHONY: tags distdir info-am info dvi-am dvi check check-am \
installcheck-am installcheck install-exec-am install-exec \
install-data-am install-data install-am install uninstall-am uninstall \
all-redirect all-am all installdirs mostlyclean-generic \
distclean-generic clean-generic maintainer-clean-generic clean \
mostlyclean distclean maintainer-clean
# Tell versions [3.59,3.63) of GNU make to not export all variables.
# Otherwise a system limit (for SysV at least) may be exceeded.
.NOEXPORT:

1
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@ -0,0 +1 @@
./" bcmath library documentation

238
ext/bcmath/libbcmath/install-sh Normal file
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@ -0,0 +1,238 @@
#!/bin/sh
#
# install - install a program, script, or datafile
# This comes from X11R5.
#
# Calling this script install-sh is preferred over install.sh, to prevent
# `make' implicit rules from creating a file called install from it
# when there is no Makefile.
#
# This script is compatible with the BSD install script, but was written
# from scratch.
#
# set DOITPROG to echo to test this script
# Don't use :- since 4.3BSD and earlier shells don't like it.
doit="${DOITPROG-}"
# put in absolute paths if you don't have them in your path; or use env. vars.
mvprog="${MVPROG-mv}"
cpprog="${CPPROG-cp}"
chmodprog="${CHMODPROG-chmod}"
chownprog="${CHOWNPROG-chown}"
chgrpprog="${CHGRPPROG-chgrp}"
stripprog="${STRIPPROG-strip}"
rmprog="${RMPROG-rm}"
mkdirprog="${MKDIRPROG-mkdir}"
tranformbasename=""
transform_arg=""
instcmd="$mvprog"
chmodcmd="$chmodprog 0755"
chowncmd=""
chgrpcmd=""
stripcmd=""
rmcmd="$rmprog -f"
mvcmd="$mvprog"
src=""
dst=""
dir_arg=""
while [ x"$1" != x ]; do
case $1 in
-c) instcmd="$cpprog"
shift
continue;;
-d) dir_arg=true
shift
continue;;
-m) chmodcmd="$chmodprog $2"
shift
shift
continue;;
-o) chowncmd="$chownprog $2"
shift
shift
continue;;
-g) chgrpcmd="$chgrpprog $2"
shift
shift
continue;;
-s) stripcmd="$stripprog"
shift
continue;;
-t=*) transformarg=`echo $1 | sed 's/-t=//'`
shift
continue;;
-b=*) transformbasename=`echo $1 | sed 's/-b=//'`
shift
continue;;
*) if [ x"$src" = x ]
then
src=$1
else
# this colon is to work around a 386BSD /bin/sh bug
:
dst=$1
fi
shift
continue;;
esac
done
if [ x"$src" = x ]
then
echo "install: no input file specified"
exit 1
else
true
fi
if [ x"$dir_arg" != x ]; then
dst=$src
src=""
if [ -d $dst ]; then
instcmd=:
else
instcmd=mkdir
fi
else
# Waiting for this to be detected by the "$instcmd $src $dsttmp" command
# might cause directories to be created, which would be especially bad
# if $src (and thus $dsttmp) contains '*'.
if [ -f $src -o -d $src ]
then
true
else
echo "install: $src does not exist"
exit 1
fi
if [ x"$dst" = x ]
then
echo "install: no destination specified"
exit 1
else
true
fi
# If destination is a directory, append the input filename; if your system
# does not like double slashes in filenames, you may need to add some logic
if [ -d $dst ]
then
dst="$dst"/`basename $src`
else
true
fi
fi
## this sed command emulates the dirname command
dstdir=`echo $dst | sed -e 's,[^/]*$,,;s,/$,,;s,^$,.,'`
# Make sure that the destination directory exists.
# this part is taken from Noah Friedman's mkinstalldirs script
# Skip lots of stat calls in the usual case.
if [ ! -d "$dstdir" ]; then
defaultIFS='
'
IFS="${IFS-${defaultIFS}}"
oIFS="${IFS}"
# Some sh's can't handle IFS=/ for some reason.
IFS='%'
set - `echo ${dstdir} | sed -e 's@/@%@g' -e 's@^%@/@'`
IFS="${oIFS}"
pathcomp=''
while [ $# -ne 0 ] ; do
pathcomp="${pathcomp}${1}"
shift
if [ ! -d "${pathcomp}" ] ;
then
$mkdirprog "${pathcomp}"
else
true
fi
pathcomp="${pathcomp}/"
done
fi
if [ x"$dir_arg" != x ]
then
$doit $instcmd $dst &&
if [ x"$chowncmd" != x ]; then $doit $chowncmd $dst; else true ; fi &&
if [ x"$chgrpcmd" != x ]; then $doit $chgrpcmd $dst; else true ; fi &&
if [ x"$stripcmd" != x ]; then $doit $stripcmd $dst; else true ; fi &&
if [ x"$chmodcmd" != x ]; then $doit $chmodcmd $dst; else true ; fi
else
# If we're going to rename the final executable, determine the name now.
if [ x"$transformarg" = x ]
then
dstfile=`basename $dst`
else
dstfile=`basename $dst $transformbasename |
sed $transformarg`$transformbasename
fi
# don't allow the sed command to completely eliminate the filename
if [ x"$dstfile" = x ]
then
dstfile=`basename $dst`
else
true
fi
# Make a temp file name in the proper directory.
dsttmp=$dstdir/#inst.$$#
# Move or copy the file name to the temp name
$doit $instcmd $src $dsttmp &&
trap "rm -f ${dsttmp}" 0 &&
# and set any options; do chmod last to preserve setuid bits
# If any of these fail, we abort the whole thing. If we want to
# ignore errors from any of these, just make sure not to ignore
# errors from the above "$doit $instcmd $src $dsttmp" command.
if [ x"$chowncmd" != x ]; then $doit $chowncmd $dsttmp; else true;fi &&
if [ x"$chgrpcmd" != x ]; then $doit $chgrpcmd $dsttmp; else true;fi &&
if [ x"$stripcmd" != x ]; then $doit $stripcmd $dsttmp; else true;fi &&
if [ x"$chmodcmd" != x ]; then $doit $chmodcmd $dsttmp; else true;fi &&
# Now rename the file to the real destination.
$doit $rmcmd -f $dstdir/$dstfile &&
$doit $mvcmd $dsttmp $dstdir/$dstfile
fi &&
exit 0

134
ext/bcmath/libbcmath/missing Normal file
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@ -0,0 +1,134 @@
#! /bin/sh
# Common stub for a few missing GNU programs while installing.
# Copyright (C) 1996, 1997 Free Software Foundation, Inc.
# Franc,ois Pinard <pinard@iro.umontreal.ca>, 1996.
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2, or (at your option)
# any later version.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
# 02111-1307, USA.
if test $# -eq 0; then
echo 1>&2 "Try \`$0 --help' for more information"
exit 1
fi
case "$1" in
-h|--h|--he|--hel|--help)
echo "\
$0 [OPTION]... PROGRAM [ARGUMENT]...
Handle \`PROGRAM [ARGUMENT]...' for when PROGRAM is missing, or return an
error status if there is no known handling for PROGRAM.
Options:
-h, --help display this help and exit
-v, --version output version information and exit
Supported PROGRAM values:
aclocal touch file \`aclocal.m4'
autoconf touch file \`configure'
autoheader touch file \`config.h.in'
automake touch all \`Makefile.in' files
bison touch file \`y.tab.c'
makeinfo touch the output file
yacc touch file \`y.tab.c'"
;;
-v|--v|--ve|--ver|--vers|--versi|--versio|--version)
echo "missing - GNU libit 0.0"
;;
-*)
echo 1>&2 "$0: Unknown \`$1' option"
echo 1>&2 "Try \`$0 --help' for more information"
exit 1
;;
aclocal)
echo 1>&2 "\
WARNING: \`$1' is missing on your system. It should be needed only if
you modified \`acinclude.m4' or \`configure.in'. You might want
to install the \`Automake' and \`Perl' packages. Grab them from
any GNU archive site."
touch aclocal.m4
;;
autoconf)
echo 1>&2 "\
WARNING: \`$1' is missing on your system. It should be needed only if
you modified \`configure.in'. You might want to install the
\`Autoconf' and \`GNU m4' packages. Grab them from any GNU
archive site."
touch configure
;;
autoheader)
echo 1>&2 "\
WARNING: \`$1' is missing on your system. It should be needed only if
you modified \`acconfig.h' or \`configure.in'. You might want
to install the \`Autoconf' and \`GNU m4' packages. Grab them
from any GNU archive site."
touch config.h.in
;;
automake)
echo 1>&2 "\
WARNING: \`$1' is missing on your system. It should be needed only if
you modified \`Makefile.am', \`acinclude.m4' or \`configure.in'.
You might want to install the \`Automake' and \`Perl' packages.
Grab them from any GNU archive site."
find . -type f -name Makefile.am -print \
| sed 's/^\(.*\).am$/touch \1.in/' \
| sh
;;
bison|yacc)
echo 1>&2 "\
WARNING: \`$1' is missing on your system. It should be needed only if
your modified any \`.y' file. For being effective, your
modifications might require the \`Bison' package. Grab it from
any GNU archive site."
touch y.tab.c
;;
makeinfo)
echo 1>&2 "\
WARNING: \`$1' is missing on your system. It should be needed only if
you modified a \`.texi' or \`.texinfo' file, or any other file
indirectly affecting the aspect of the manual. The spurious
call might also be the consequence of using a buggy \`make' (AIX,
DU, IRIX). You might want to install the \`Texinfo' package or
the \`GNU make' package. Grab either from any GNU archive site."
file=`echo "$*" | sed -n 's/.*-o \([^ ]*\).*/\1/p'`
if test -z "$file"; then
file=`echo "$*" | sed 's/.* \([^ ]*\) *$/\1/'`
file=`sed -n '/^@setfilename/ { s/.* \([^ ]*\) *$/\1/; p; q; }' $file`
fi
touch $file
;;
*)
echo 1>&2 "\
WARNING: \`$1' is needed, and you do not seem to have it handy on your
system. You might have modified some files without having the
proper tools for further handling them. Check the \`README' file,
it often tells you about the needed prerequirements for installing
this package. You may also peek at any GNU archive site, in case
some other package would contain this missing \`$1' program."
exit 1
;;
esac
exit 0

36
ext/bcmath/libbcmath/mkinstalldirs Normal file
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@ -0,0 +1,36 @@
#! /bin/sh
# mkinstalldirs --- make directory hierarchy
# Author: Noah Friedman <friedman@prep.ai.mit.edu>
# Created: 1993-05-16
# Last modified: 1994-03-25
# Public domain
errstatus=0
for file in ${1+"$@"} ; do
set fnord `echo ":$file" | sed -ne 's/^:\//#/;s/^://;s/\// /g;s/^#/\//;p'`
shift
pathcomp=
for d in ${1+"$@"} ; do
pathcomp="$pathcomp$d"
case "$pathcomp" in
-* ) pathcomp=./$pathcomp ;;
esac
if test ! -d "$pathcomp"; then
echo "mkdir $pathcomp" 1>&2
mkdir "$pathcomp" > /dev/null 2>&1 || lasterr=$?
fi
if test ! -d "$pathcomp"; then
errstatus=$lasterr
fi
pathcomp="$pathcomp/"
done
done
exit $errstatus
# mkinstalldirs ends here

21
ext/bcmath/libbcmath/src/Makefile.am Normal file
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@ -0,0 +1,21 @@
# Makefile for bcmath library
lib_LIBRARIES = libbcmath.a
include_HEADERS = bcmath.h
libbcmath_a_SOURCES= add.c compare.c debug.c div.c divmod.c doaddsub.c \
init.c int2num.c nearzero.c neg.c num2long.c num2str.c output.c \
raise.c raisemod.c recmul.c rmzero.c sqrt.c str2num.c sub.c zero.c \
outofmem.c rt.c
INCLUDES = -I$(srcdir) -I..
CFLAGS = @CFLAGS@ $(INCLUDES) -Wall
MAINTAINERCLEANFILES= Makefile.in $(libbcmath_a_SOURCES) private.h bcmath.h
all: $(bin_LIBRARIES)
clean:
rm -f $(OBJS) $(LIB) *~

318
ext/bcmath/libbcmath/src/Makefile.in Normal file
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@ -0,0 +1,318 @@
# Makefile.in generated automatically by automake 1.4 from Makefile.am
# Copyright (C) 1994, 1995-8, 1999 Free Software Foundation, Inc.
# This Makefile.in is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
# with or without modifications, as long as this notice is preserved.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
# PARTICULAR PURPOSE.
# Makefile for bcmath library
SHELL = @SHELL@
srcdir = @srcdir@
top_srcdir = @top_srcdir@
VPATH = @srcdir@
prefix = @prefix@
exec_prefix = @exec_prefix@
bindir = @bindir@
sbindir = @sbindir@
libexecdir = @libexecdir@
datadir = @datadir@
sysconfdir = @sysconfdir@
sharedstatedir = @sharedstatedir@
localstatedir = @localstatedir@
libdir = @libdir@
infodir = @infodir@
mandir = @mandir@
includedir = @includedir@
oldincludedir = /usr/include
DESTDIR =
pkgdatadir = $(datadir)/@PACKAGE@
pkglibdir = $(libdir)/@PACKAGE@
pkgincludedir = $(includedir)/@PACKAGE@
top_builddir = ..
ACLOCAL = @ACLOCAL@
AUTOCONF = @AUTOCONF@
AUTOMAKE = @AUTOMAKE@
AUTOHEADER = @AUTOHEADER@
INSTALL = @INSTALL@
INSTALL_PROGRAM = @INSTALL_PROGRAM@ $(AM_INSTALL_PROGRAM_FLAGS)
INSTALL_DATA = @INSTALL_DATA@
INSTALL_SCRIPT = @INSTALL_SCRIPT@
transform = @program_transform_name@
NORMAL_INSTALL = :
PRE_INSTALL = :
POST_INSTALL = :
NORMAL_UNINSTALL = :
PRE_UNINSTALL = :
POST_UNINSTALL = :
CC = @CC@
MAKEINFO = @MAKEINFO@
PACKAGE = @PACKAGE@
RANLIB = @RANLIB@
VERSION = @VERSION@
lib_LIBRARIES = libbcmath.a
include_HEADERS = bcmath.h
libbcmath_a_SOURCES = add.c compare.c debug.c div.c divmod.c doaddsub.c init.c int2num.c nearzero.c neg.c num2long.c num2str.c output.c raise.c raisemod.c recmul.c rmzero.c sqrt.c str2num.c sub.c zero.c outofmem.c rt.c
INCLUDES = -I$(srcdir) -I..
CFLAGS = @CFLAGS@ $(INCLUDES) -Wall
MAINTAINERCLEANFILES = Makefile.in $(libbcmath_a_SOURCES) private.h bcmath.h
mkinstalldirs = $(SHELL) $(top_srcdir)/mkinstalldirs
CONFIG_HEADER = ../config.h
CONFIG_CLEAN_FILES =
LIBRARIES = $(lib_LIBRARIES)
DEFS = @DEFS@ -I. -I$(srcdir) -I..
CPPFLAGS = @CPPFLAGS@
LDFLAGS = @LDFLAGS@
LIBS = @LIBS@
libbcmath_a_LIBADD =
libbcmath_a_OBJECTS = add.o compare.o debug.o div.o divmod.o doaddsub.o \
init.o int2num.o nearzero.o neg.o num2long.o num2str.o output.o raise.o \
raisemod.o recmul.o rmzero.o sqrt.o str2num.o sub.o zero.o outofmem.o \
rt.o
AR = ar
COMPILE = $(CC) $(DEFS) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS)
CCLD = $(CC)
LINK = $(CCLD) $(AM_CFLAGS) $(CFLAGS) $(LDFLAGS) -o $@
HEADERS = $(include_HEADERS)
DIST_COMMON = Makefile.am Makefile.in
DISTFILES = $(DIST_COMMON) $(SOURCES) $(HEADERS) $(TEXINFOS) $(EXTRA_DIST)
TAR = tar
GZIP_ENV = --best
SOURCES = $(libbcmath_a_SOURCES)
OBJECTS = $(libbcmath_a_OBJECTS)
all: all-redirect
.SUFFIXES:
.SUFFIXES: .S .c .o .s
$(srcdir)/Makefile.in: Makefile.am $(top_srcdir)/configure.in $(ACLOCAL_M4)
cd $(top_srcdir) && $(AUTOMAKE) --foreign --include-deps src/Makefile
Makefile: $(srcdir)/Makefile.in $(top_builddir)/config.status
cd $(top_builddir) \
&& CONFIG_FILES=$(subdir)/$@ CONFIG_HEADERS= $(SHELL) ./config.status
mostlyclean-libLIBRARIES:
clean-libLIBRARIES:
-test -z "$(lib_LIBRARIES)" || rm -f $(lib_LIBRARIES)
distclean-libLIBRARIES:
maintainer-clean-libLIBRARIES:
install-libLIBRARIES: $(lib_LIBRARIES)
@$(NORMAL_INSTALL)
$(mkinstalldirs) $(DESTDIR)$(libdir)
@list='$(lib_LIBRARIES)'; for p in $$list; do \
if test -f $$p; then \
echo " $(INSTALL_DATA) $$p $(DESTDIR)$(libdir)/$$p"; \
$(INSTALL_DATA) $$p $(DESTDIR)$(libdir)/$$p; \
else :; fi; \
done
@$(POST_INSTALL)
@list='$(lib_LIBRARIES)'; for p in $$list; do \
if test -f $$p; then \
echo " $(RANLIB) $(DESTDIR)$(libdir)/$$p"; \
$(RANLIB) $(DESTDIR)$(libdir)/$$p; \
else :; fi; \
done
uninstall-libLIBRARIES:
@$(NORMAL_UNINSTALL)
list='$(lib_LIBRARIES)'; for p in $$list; do \
rm -f $(DESTDIR)$(libdir)/$$p; \
done
.c.o:
$(COMPILE) -c $<
.s.o:
$(COMPILE) -c $<
.S.o:
$(COMPILE) -c $<
mostlyclean-compile:
-rm -f *.o core *.core
clean-compile:
distclean-compile:
-rm -f *.tab.c
maintainer-clean-compile:
libbcmath.a: $(libbcmath_a_OBJECTS) $(libbcmath_a_DEPENDENCIES)
-rm -f libbcmath.a
$(AR) cru libbcmath.a $(libbcmath_a_OBJECTS) $(libbcmath_a_LIBADD)
$(RANLIB) libbcmath.a
install-includeHEADERS: $(include_HEADERS)
@$(NORMAL_INSTALL)
$(mkinstalldirs) $(DESTDIR)$(includedir)
@list='$(include_HEADERS)'; for p in $$list; do \
if test -f "$$p"; then d= ; else d="$(srcdir)/"; fi; \
echo " $(INSTALL_DATA) $$d$$p $(DESTDIR)$(includedir)/$$p"; \
$(INSTALL_DATA) $$d$$p $(DESTDIR)$(includedir)/$$p; \
done
uninstall-includeHEADERS:
@$(NORMAL_UNINSTALL)
list='$(include_HEADERS)'; for p in $$list; do \
rm -f $(DESTDIR)$(includedir)/$$p; \
done
tags: TAGS
ID: $(HEADERS) $(SOURCES) $(LISP)
list='$(SOURCES) $(HEADERS)'; \
unique=`for i in $$list; do echo $$i; done | \
awk ' { files[$$0] = 1; } \
END { for (i in files) print i; }'`; \
here=`pwd` && cd $(srcdir) \
&& mkid -f$$here/ID $$unique $(LISP)
TAGS: $(HEADERS) $(SOURCES) $(TAGS_DEPENDENCIES) $(LISP)
tags=; \
here=`pwd`; \
list='$(SOURCES) $(HEADERS)'; \
unique=`for i in $$list; do echo $$i; done | \
awk ' { files[$$0] = 1; } \
END { for (i in files) print i; }'`; \
test -z "$(ETAGS_ARGS)$$unique$(LISP)$$tags" \
|| (cd $(srcdir) && etags $(ETAGS_ARGS) $$tags $$unique $(LISP) -o $$here/TAGS)
mostlyclean-tags:
clean-tags:
distclean-tags:
-rm -f TAGS ID
maintainer-clean-tags:
distdir = $(top_builddir)/$(PACKAGE)-$(VERSION)/$(subdir)
subdir = src
distdir: $(DISTFILES)
@for file in $(DISTFILES); do \
d=$(srcdir); \
if test -d $$d/$$file; then \
cp -pr $$/$$file $(distdir)/$$file; \
else \
test -f $(distdir)/$$file \
|| ln $$d/$$file $(distdir)/$$file 2> /dev/null \
|| cp -p $$d/$$file $(distdir)/$$file || :; \
fi; \
done
info-am:
info: info-am
dvi-am:
dvi: dvi-am
check-am: all-am
check: check-am
installcheck-am:
installcheck: installcheck-am
install-exec-am: install-libLIBRARIES
install-exec: install-exec-am
install-data-am: install-includeHEADERS
install-data: install-data-am
install-am: all-am
@$(MAKE) $(AM_MAKEFLAGS) install-exec-am install-data-am
install: install-am
uninstall-am: uninstall-libLIBRARIES uninstall-includeHEADERS
uninstall: uninstall-am
all-am: Makefile $(LIBRARIES) $(HEADERS)
all-redirect: all-am
install-strip:
$(MAKE) $(AM_MAKEFLAGS) AM_INSTALL_PROGRAM_FLAGS=-s install
installdirs:
$(mkinstalldirs) $(DESTDIR)$(libdir) $(DESTDIR)$(includedir)
mostlyclean-generic:
clean-generic:
distclean-generic:
-rm -f Makefile $(CONFIG_CLEAN_FILES)
-rm -f config.cache config.log stamp-h stamp-h[0-9]*
maintainer-clean-generic:
-test -z "$(MAINTAINERCLEANFILES)" || rm -f $(MAINTAINERCLEANFILES)
mostlyclean-am: mostlyclean-libLIBRARIES mostlyclean-compile \
mostlyclean-tags mostlyclean-generic
mostlyclean: mostlyclean-am
clean-am: clean-libLIBRARIES clean-compile clean-tags clean-generic \
mostlyclean-am
clean: clean-am
distclean-am: distclean-libLIBRARIES distclean-compile distclean-tags \
distclean-generic clean-am
distclean: distclean-am
maintainer-clean-am: maintainer-clean-libLIBRARIES \
maintainer-clean-compile maintainer-clean-tags \
maintainer-clean-generic distclean-am
@echo "This command is intended for maintainers to use;"
@echo "it deletes files that may require special tools to rebuild."
maintainer-clean: maintainer-clean-am
.PHONY: mostlyclean-libLIBRARIES distclean-libLIBRARIES \
clean-libLIBRARIES maintainer-clean-libLIBRARIES uninstall-libLIBRARIES \
install-libLIBRARIES mostlyclean-compile distclean-compile \
clean-compile maintainer-clean-compile uninstall-includeHEADERS \
install-includeHEADERS tags mostlyclean-tags distclean-tags clean-tags \
maintainer-clean-tags distdir info-am info dvi-am dvi check check-am \
installcheck-am installcheck install-exec-am install-exec \
install-data-am install-data install-am install uninstall-am uninstall \
all-redirect all-am all installdirs mostlyclean-generic \
distclean-generic clean-generic maintainer-clean-generic clean \
mostlyclean distclean maintainer-clean
all: $(bin_LIBRARIES)
clean:
rm -f $(OBJS) $(LIB) *~
# Tell versions [3.59,3.63) of GNU make to not export all variables.
# Otherwise a system limit (for SysV at least) may be exceeded.
.NOEXPORT:

88
ext/bcmath/libbcmath/src/add.c Normal file
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/* add.c: bcmath library file. */
/*
Copyright (C) 1991, 1992, 1993, 1994, 1997 Free Software Foundation, Inc.
Copyright (C) 2000 Philip A. Nelson
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details. (COPYING.LIB)
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to:
The Free Software Foundation, Inc.
59 Temple Place, Suite 330
Boston, MA 02111-1307 USA.
You may contact the author by:
e-mail: philnelson@acm.org
us-mail: Philip A. Nelson
Computer Science Department, 9062
Western Washington University
Bellingham, WA 98226-9062
*************************************************************************/
#include <config.h>
#include <stdio.h>
#include <assert.h>
#include <stdlib.h>
#include <ctype.h>
#include <stdarg.h>
#include "bcmath.h"
#include "private.h"
/* Here is the full add routine that takes care of negative numbers.
N1 is added to N2 and the result placed into RESULT. SCALE_MIN
is the minimum scale for the result. */
void
bc_add (n1, n2, result, scale_min)
bc_num n1, n2, *result;
int scale_min;
{
bc_num sum = NULL;
int cmp_res;
int res_scale;
if (n1->n_sign == n2->n_sign)
{
sum = _bc_do_add (n1, n2, scale_min);
sum->n_sign = n1->n_sign;
}
else
{
/* subtraction must be done. */
cmp_res = _bc_do_compare (n1, n2, FALSE, FALSE); /* Compare magnitudes. */
switch (cmp_res)
{
case -1:
/* n1 is less than n2, subtract n1 from n2. */
sum = _bc_do_sub (n2, n1, scale_min);
sum->n_sign = n2->n_sign;
break;
case 0:
/* They are equal! return zero with the correct scale! */
res_scale = MAX (scale_min, MAX(n1->n_scale, n2->n_scale));
sum = bc_new_num (1, res_scale);
memset (sum->n_value, 0, res_scale+1);
break;
case 1:
/* n2 is less than n1, subtract n2 from n1. */
sum = _bc_do_sub (n1, n2, scale_min);
sum->n_sign = n1->n_sign;
}
}
/* Clean up and return. */
bc_free_num (result);
*result = sum;
}

158
ext/bcmath/libbcmath/src/bcmath.h Normal file
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/* bcmath.h: bcmath library header. */
/*
Copyright (C) 1991, 1992, 1993, 1994, 1997 Free Software Foundation, Inc.
Copyright (C) 2000 Philip A. Nelson
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details. (COPYING.LIB)
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to:
The Free Software Foundation, Inc.
59 Temple Place, Suite 330
Boston, MA 02111-1307 USA.
You may contact the author by:
e-mail: philnelson@acm.org
us-mail: Philip A. Nelson
Computer Science Department, 9062
Western Washington University
Bellingham, WA 98226-9062
*************************************************************************/
#ifndef _BCMATH_H_
#define _BCMATH_H_
typedef enum {PLUS, MINUS} sign;
typedef struct bc_struct *bc_num;
typedef struct bc_struct
{
sign n_sign;
int n_len; /* The number of digits before the decimal point. */
int n_scale; /* The number of digits after the decimal point. */
int n_refs; /* The number of pointers to this number. */
bc_num n_next; /* Linked list for available list. */
char *n_ptr; /* The pointer to the actual storage.
If NULL, n_value points to the inside of
another number (bc_multiply...) and should
not be "freed." */
char *n_value; /* The number. Not zero char terminated.
May not point to the same place as n_ptr as
in the case of leading zeros generated. */
} bc_struct;
/* The base used in storing the numbers in n_value above.
Currently this MUST be 10. */
#define BASE 10
/* Some useful macros and constants. */
#define CH_VAL(c) (c - '0')
#define BCD_CHAR(d) (d + '0')
#ifdef MIN
#undef MIN
#undef MAX
#endif
#define MAX(a,b) ((a)>(b)?(a):(b))
#define MIN(a,b) ((a)>(b)?(b):(a))
#define ODD(a) ((a)&1)
#ifndef TRUE
#define TRUE 1
#define FALSE 0
#endif
#ifndef LONG_MAX
#define LONG_MAX 0x7ffffff
#endif
/* Global numbers. */
extern bc_num _zero_;
extern bc_num _one_;
extern bc_num _two_;
/* Function Prototypes */
/* Define the _PROTOTYPE macro if it is needed. */
#ifndef _PROTOTYPE
#ifdef __STDC__
#define _PROTOTYPE(func, args) func args
#else
#define _PROTOTYPE(func, args) func()
#endif
#endif
_PROTOTYPE(void bc_init_numbers, (void));
_PROTOTYPE(bc_num bc_new_num, (int length, int scale));
_PROTOTYPE(void bc_free_num, (bc_num *num));
_PROTOTYPE(bc_num bc_copy_num, (bc_num num));
_PROTOTYPE(void bc_init_num, (bc_num *num));
_PROTOTYPE(void bc_str2num, (bc_num *num, char *str, int scale));
_PROTOTYPE(char *bc_num2str, (bc_num num));
_PROTOTYPE(void bc_int2num, (bc_num *num, int val));
_PROTOTYPE(long bc_num2long, (bc_num num));
_PROTOTYPE(int bc_compare, (bc_num n1, bc_num n2));
_PROTOTYPE(char bc_is_zero, (bc_num num));
_PROTOTYPE(char bc_is_near_zero, (bc_num num, int scale));
_PROTOTYPE(char bc_is_neg, (bc_num num));
_PROTOTYPE(void bc_add, (bc_num n1, bc_num n2, bc_num *result, int scale_min));
_PROTOTYPE(void bc_sub, (bc_num n1, bc_num n2, bc_num *result, int scale_min));
_PROTOTYPE(void bc_multiply, (bc_num n1, bc_num n2, bc_num *prod, int scale));
_PROTOTYPE(int bc_divide, (bc_num n1, bc_num n2, bc_num *quot, int scale));
_PROTOTYPE(int bc_modulo, (bc_num num1, bc_num num2, bc_num *result,
int scale));
_PROTOTYPE(int bc_divmod, (bc_num num1, bc_num num2, bc_num *quot,
bc_num *rem, int scale));
_PROTOTYPE(int bc_raisemod, (bc_num base, bc_num expo, bc_num mod,
bc_num *result, int scale));
_PROTOTYPE(void bc_raise, (bc_num num1, bc_num num2, bc_num *result,
int scale));
_PROTOTYPE(int bc_sqrt, (bc_num *num, int scale));
_PROTOTYPE(void bc_out_num, (bc_num num, int o_base, void (* out_char)(int),
int leading_zero));
/* Prototypes needed for external utility routines. */
_PROTOTYPE(void bc_rt_warn, (char *mesg ,...));
_PROTOTYPE(void bc_rt_error, (char *mesg ,...));
_PROTOTYPE(void bc_out_of_memory, (void));
#endif

161
ext/bcmath/libbcmath/src/compare.c Normal file
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/* compare.c: bcmath library file. */
/*
Copyright (C) 1991, 1992, 1993, 1994, 1997 Free Software Foundation, Inc.
Copyright (C) 2000 Philip A. Nelson
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details. (COPYING.LIB)
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to:
The Free Software Foundation, Inc.
59 Temple Place, Suite 330
Boston, MA 02111-1307 USA.
You may contact the author by:
e-mail: philnelson@acm.org
us-mail: Philip A. Nelson
Computer Science Department, 9062
Western Washington University
Bellingham, WA 98226-9062
*************************************************************************/
#include <config.h>
#include <stdio.h>
#include <assert.h>
#include <stdlib.h>
#include <ctype.h>
#include <stdarg.h>
#include "bcmath.h"
#include "private.h"
/* Compare two bc numbers. Return value is 0 if equal, -1 if N1 is less
than N2 and +1 if N1 is greater than N2. If USE_SIGN is false, just
compare the magnitudes. */
int
_bc_do_compare (n1, n2, use_sign, ignore_last)
bc_num n1, n2;
int use_sign;
int ignore_last;
{
char *n1ptr, *n2ptr;
int count;
/* First, compare signs. */
if (use_sign && n1->n_sign != n2->n_sign)
{
if (n1->n_sign == PLUS)
return (1); /* Positive N1 > Negative N2 */
else
return (-1); /* Negative N1 < Positive N1 */
}
/* Now compare the magnitude. */
if (n1->n_len != n2->n_len)
{
if (n1->n_len > n2->n_len)
{
/* Magnitude of n1 > n2. */
if (!use_sign || n1->n_sign == PLUS)
return (1);
else
return (-1);
}
else
{
/* Magnitude of n1 < n2. */
if (!use_sign || n1->n_sign == PLUS)
return (-1);
else
return (1);
}
}
/* If we get here, they have the same number of integer digits.
check the integer part and the equal length part of the fraction. */
count = n1->n_len + MIN (n1->n_scale, n2->n_scale);
n1ptr = n1->n_value;
n2ptr = n2->n_value;
while ((count > 0) && (*n1ptr == *n2ptr))
{
n1ptr++;
n2ptr++;
count--;
}
if (ignore_last && count == 1 && n1->n_scale == n2->n_scale)
return (0);
if (count != 0)
{
if (*n1ptr > *n2ptr)
{
/* Magnitude of n1 > n2. */
if (!use_sign || n1->n_sign == PLUS)
return (1);
else
return (-1);
}
else
{
/* Magnitude of n1 < n2. */
if (!use_sign || n1->n_sign == PLUS)
return (-1);
else
return (1);
}
}
/* They are equal up to the last part of the equal part of the fraction. */
if (n1->n_scale != n2->n_scale)
{
if (n1->n_scale > n2->n_scale)
{
for (count = n1->n_scale-n2->n_scale; count>0; count--)
if (*n1ptr++ != 0)
{
/* Magnitude of n1 > n2. */
if (!use_sign || n1->n_sign == PLUS)
return (1);
else
return (-1);
}
}
else
{
for (count = n2->n_scale-n1->n_scale; count>0; count--)
if (*n2ptr++ != 0)
{
/* Magnitude of n1 < n2. */
if (!use_sign || n1->n_sign == PLUS)
return (-1);
else
return (1);
}
}
}
/* They must be equal! */
return (0);
}
/* This is the "user callable" routine to compare numbers N1 and N2. */
int
bc_compare (n1, n2)
bc_num n1, n2;
{
return _bc_do_compare (n1, n2, TRUE, FALSE);
}

9
ext/bcmath/libbcmath/src/config.h Normal file
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@ -0,0 +1,9 @@
#if PHP_WIN32
#include "../../../../main/config.w32.h"
#else
#include "../../../../main/php_config.h"
#endif
#include <string.h>
#include "zend.h"
#include "zend_alloc.h"

70
ext/bcmath/libbcmath/src/debug.c Normal file
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/* debug.c: bcmath library file. */
/*
Copyright (C) 1991, 1992, 1993, 1994, 1997 Free Software Foundation, Inc.
Copyright (C) 2000 Philip A. Nelson
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details. (COPYING.LIB)
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to:
The Free Software Foundation, Inc.
59 Temple Place, Suite 330
Boston, MA 02111-1307 USA.
You may contact the author by:
e-mail: philnelson@acm.org
us-mail: Philip A. Nelson
Computer Science Department, 9062
Western Washington University
Bellingham, WA 98226-9062
*************************************************************************/
#include <config.h>
#include <stdio.h>
#include <assert.h>
#include <stdlib.h>
#include <ctype.h>
#include <stdarg.h>
#include "bcmath.h"
#include "private.h"
/* pn prints the number NUM in base 10. */
static void
out_char (int c)
{
putchar(c);
}
void
pn (num)
bc_num num;
{
bc_out_num (num, 10, out_char, 0);
out_char ('\n');
}
/* pv prints a character array as if it was a string of bcd digits. */
void
pv (name, num, len)
char *name;
unsigned char *num;
int len;
{
int i;
printf ("%s=", name);
for (i=0; i<len; i++) printf ("%c",BCD_CHAR(num[i]));
printf ("\n");
}

276
ext/bcmath/libbcmath/src/div.c Normal file
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/* div.c: bcmath library file. */
/*
Copyright (C) 1991, 1992, 1993, 1994, 1997 Free Software Foundation, Inc.
Copyright (C) 2000 Philip A. Nelson
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details. (COPYING.LIB)
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to:
The Free Software Foundation, Inc.
59 Temple Place, Suite 330
Boston, MA 02111-1307 USA.
You may contact the author by:
e-mail: philnelson@acm.org
us-mail: Philip A. Nelson
Computer Science Department, 9062
Western Washington University
Bellingham, WA 98226-9062
*************************************************************************/
#include <config.h>
#include <stdio.h>
#include <assert.h>
#include <stdlib.h>
#include <ctype.h>
#include <stdarg.h>
#include "bcmath.h"
#include "private.h"
/* Some utility routines for the divide: First a one digit multiply.
NUM (with SIZE digits) is multiplied by DIGIT and the result is
placed into RESULT. It is written so that NUM and RESULT can be
the same pointers. */
static void
_one_mult (num, size, digit, result)
unsigned char *num;
int size, digit;
unsigned char *result;
{
int carry, value;
unsigned char *nptr, *rptr;
if (digit == 0)
memset (result, 0, size);
else
{
if (digit == 1)
memcpy (result, num, size);
else
{
/* Initialize */
nptr = (unsigned char *) (num+size-1);
rptr = (unsigned char *) (result+size-1);
carry = 0;
while (size-- > 0)
{
value = *nptr-- * digit + carry;
*rptr-- = value % BASE;
carry = value / BASE;
}
if (carry != 0) *rptr = carry;
}
}
}
/* The full division routine. This computes N1 / N2. It returns
0 if the division is ok and the result is in QUOT. The number of
digits after the decimal point is SCALE. It returns -1 if division
by zero is tried. The algorithm is found in Knuth Vol 2. p237. */
int
bc_divide (n1, n2, quot, scale)
bc_num n1, n2, *quot;
int scale;
{
bc_num qval;
unsigned char *num1, *num2;
unsigned char *ptr1, *ptr2, *n2ptr, *qptr;
int scale1, val;
unsigned int len1, len2, scale2, qdigits, extra, count;
unsigned int qdig, qguess, borrow, carry;
unsigned char *mval;
char zero;
unsigned int norm;
/* Test for divide by zero. */
if (bc_is_zero (n2)) return -1;
/* Test for divide by 1. If it is we must truncate. */
if (n2->n_scale == 0)
{
if (n2->n_len == 1 && *n2->n_value == 1)
{
qval = bc_new_num (n1->n_len, scale);
qval->n_sign = (n1->n_sign == n2->n_sign ? PLUS : MINUS);
memset (&qval->n_value[n1->n_len],0,scale);
memcpy (qval->n_value, n1->n_value,
n1->n_len + MIN(n1->n_scale,scale));
bc_free_num (quot);
*quot = qval;
}
}
/* Set up the divide. Move the decimal point on n1 by n2's scale.
Remember, zeros on the end of num2 are wasted effort for dividing. */
scale2 = n2->n_scale;
n2ptr = (unsigned char *) n2->n_value+n2->n_len+scale2-1;
while ((scale2 > 0) && (*n2ptr-- == 0)) scale2--;
len1 = n1->n_len + scale2;
scale1 = n1->n_scale - scale2;
if (scale1 < scale)
extra = scale - scale1;
else
extra = 0;
num1 = (unsigned char *) malloc (n1->n_len+n1->n_scale+extra+2);
if (num1 == NULL) bc_out_of_memory();
memset (num1, 0, n1->n_len+n1->n_scale+extra+2);
memcpy (num1+1, n1->n_value, n1->n_len+n1->n_scale);
len2 = n2->n_len + scale2;
num2 = (unsigned char *) malloc (len2+1);
if (num2 == NULL) bc_out_of_memory();
memcpy (num2, n2->n_value, len2);
*(num2+len2) = 0;
n2ptr = num2;
while (*n2ptr == 0)
{
n2ptr++;
len2--;
}
/* Calculate the number of quotient digits. */
if (len2 > len1+scale)
{
qdigits = scale+1;
zero = TRUE;
}
else
{
zero = FALSE;
if (len2>len1)
qdigits = scale+1; /* One for the zero integer part. */
else
qdigits = len1-len2+scale+1;
}
/* Allocate and zero the storage for the quotient. */
qval = bc_new_num (qdigits-scale,scale);
memset (qval->n_value, 0, qdigits);
/* Allocate storage for the temporary storage mval. */
mval = (unsigned char *) malloc (len2+1);
if (mval == NULL) bc_out_of_memory ();
/* Now for the full divide algorithm. */
if (!zero)
{
/* Normalize */
norm = 10 / ((int)*n2ptr + 1);
if (norm != 1)
{
_one_mult (num1, len1+scale1+extra+1, norm, num1);
_one_mult (n2ptr, len2, norm, n2ptr);
}
/* Initialize divide loop. */
qdig = 0;
if (len2 > len1)
qptr = (unsigned char *) qval->n_value+len2-len1;
else
qptr = (unsigned char *) qval->n_value;
/* Loop */
while (qdig <= len1+scale-len2)
{
/* Calculate the quotient digit guess. */
if (*n2ptr == num1[qdig])
qguess = 9;
else
qguess = (num1[qdig]*10 + num1[qdig+1]) / *n2ptr;
/* Test qguess. */
if (n2ptr[1]*qguess >
(num1[qdig]*10 + num1[qdig+1] - *n2ptr*qguess)*10
+ num1[qdig+2])
{
qguess--;
/* And again. */
if (n2ptr[1]*qguess >
(num1[qdig]*10 + num1[qdig+1] - *n2ptr*qguess)*10
+ num1[qdig+2])
qguess--;
}
/* Multiply and subtract. */
borrow = 0;
if (qguess != 0)
{
*mval = 0;
_one_mult (n2ptr, len2, qguess, mval+1);
ptr1 = (unsigned char *) num1+qdig+len2;
ptr2 = (unsigned char *) mval+len2;
for (count = 0; count < len2+1; count++)
{
val = (int) *ptr1 - (int) *ptr2-- - borrow;
if (val < 0)
{
val += 10;
borrow = 1;
}
else
borrow = 0;
*ptr1-- = val;
}
}
/* Test for negative result. */
if (borrow == 1)
{
qguess--;
ptr1 = (unsigned char *) num1+qdig+len2;
ptr2 = (unsigned char *) n2ptr+len2-1;
carry = 0;
for (count = 0; count < len2; count++)
{
val = (int) *ptr1 + (int) *ptr2-- + carry;
if (val > 9)
{
val -= 10;
carry = 1;
}
else
carry = 0;
*ptr1-- = val;
}
if (carry == 1) *ptr1 = (*ptr1 + 1) % 10;
}
/* We now know the quotient digit. */
*qptr++ = qguess;
qdig++;
}
}
/* Clean up and return the number. */
qval->n_sign = ( n1->n_sign == n2->n_sign ? PLUS : MINUS );
if (bc_is_zero (qval)) qval->n_sign = PLUS;
_bc_rm_leading_zeros (qval);
bc_free_num (quot);
*quot = qval;
/* Clean up temporary storage. */
free (mval);
free (num1);
free (num2);
return 0; /* Everything is OK. */
}

91
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/* divmod.c: bcmath library file. */
/*
Copyright (C) 1991, 1992, 1993, 1994, 1997 Free Software Foundation, Inc.
Copyright (C) 2000 Philip A. Nelson
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details. (COPYING.LIB)
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to:
The Free Software Foundation, Inc.
59 Temple Place, Suite 330
Boston, MA 02111-1307 USA.
You may contact the author by:
e-mail: philnelson@acm.org
us-mail: Philip A. Nelson
Computer Science Department, 9062
Western Washington University
Bellingham, WA 98226-9062
*************************************************************************/
#include <config.h>
#include <stdio.h>
#include <assert.h>
#include <stdlib.h>
#include <ctype.h>
#include <stdarg.h>
#include "bcmath.h"
#include "private.h"
/* Division *and* modulo for numbers. This computes both NUM1 / NUM2 and
NUM1 % NUM2 and puts the results in QUOT and REM, except that if QUOT
is NULL then that store will be omitted.
*/
int
bc_divmod (num1, num2, quot, rem, scale)
bc_num num1, num2, *quot, *rem;
int scale;
{
bc_num quotient = NULL;
bc_num temp;
int rscale;
/* Check for correct numbers. */
if (bc_is_zero (num2)) return -1;
/* Calculate final scale. */
rscale = MAX (num1->n_scale, num2->n_scale+scale);
bc_init_num(&temp);
/* Calculate it. */
bc_divide (num1, num2, &temp, scale);
if (quot)
quotient = bc_copy_num (temp);
bc_multiply (temp, num2, &temp, rscale);
bc_sub (num1, temp, rem, rscale);
bc_free_num (&temp);
if (quot)
{
bc_free_num (quot);
*quot = quotient;
}
return 0; /* Everything is OK. */
}
/* Modulo for numbers. This computes NUM1 % NUM2 and puts the
result in RESULT. */
int
bc_modulo (num1, num2, result, scale)
bc_num num1, num2, *result;
int scale;
{
return bc_divmod (num1, num2, NULL, result, scale);
}

232
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/* doaddsub.c: bcmath library file. */
/*
Copyright (C) 1991, 1992, 1993, 1994, 1997 Free Software Foundation, Inc.
Copyright (C) 2000 Philip A. Nelson
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details. (COPYING.LIB)
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to:
The Free Software Foundation, Inc.
59 Temple Place, Suite 330
Boston, MA 02111-1307 USA.
You may contact the author by:
e-mail: philnelson@acm.org
us-mail: Philip A. Nelson
Computer Science Department, 9062
Western Washington University
Bellingham, WA 98226-9062
*************************************************************************/
#include <config.h>
#include <stdio.h>
#include <assert.h>
#include <stdlib.h>
#include <ctype.h>
#include <stdarg.h>
#include "bcmath.h"
#include "private.h"
/* Perform addition: N1 is added to N2 and the value is
returned. The signs of N1 and N2 are ignored.
SCALE_MIN is to set the minimum scale of the result. */
bc_num
_bc_do_add (n1, n2, scale_min)
bc_num n1, n2;
int scale_min;
{
bc_num sum;
int sum_scale, sum_digits;
char *n1ptr, *n2ptr, *sumptr;
int carry, n1bytes, n2bytes;
int count;
/* Prepare sum. */
sum_scale = MAX (n1->n_scale, n2->n_scale);
sum_digits = MAX (n1->n_len, n2->n_len) + 1;
sum = bc_new_num (sum_digits, MAX(sum_scale, scale_min));
/* Zero extra digits made by scale_min. */
if (scale_min > sum_scale)
{
sumptr = (char *) (sum->n_value + sum_scale + sum_digits);
for (count = scale_min - sum_scale; count > 0; count--)
*sumptr++ = 0;
}
/* Start with the fraction part. Initialize the pointers. */
n1bytes = n1->n_scale;
n2bytes = n2->n_scale;
n1ptr = (char *) (n1->n_value + n1->n_len + n1bytes - 1);
n2ptr = (char *) (n2->n_value + n2->n_len + n2bytes - 1);
sumptr = (char *) (sum->n_value + sum_scale + sum_digits - 1);
/* Add the fraction part. First copy the longer fraction.*/
if (n1bytes != n2bytes)
{
if (n1bytes > n2bytes)
while (n1bytes>n2bytes)
{ *sumptr-- = *n1ptr--; n1bytes--;}
else
while (n2bytes>n1bytes)
{ *sumptr-- = *n2ptr--; n2bytes--;}
}
/* Now add the remaining fraction part and equal size integer parts. */
n1bytes += n1->n_len;
n2bytes += n2->n_len;
carry = 0;
while ((n1bytes > 0) && (n2bytes > 0))
{
*sumptr = *n1ptr-- + *n2ptr-- + carry;
if (*sumptr > (BASE-1))
{
carry = 1;
*sumptr -= BASE;
}
else
carry = 0;
sumptr--;
n1bytes--;
n2bytes--;
}
/* Now add carry the longer integer part. */
if (n1bytes == 0)
{ n1bytes = n2bytes; n1ptr = n2ptr; }
while (n1bytes-- > 0)
{
*sumptr = *n1ptr-- + carry;
if (*sumptr > (BASE-1))
{
carry = 1;
*sumptr -= BASE;
}
else
carry = 0;
sumptr--;
}
/* Set final carry. */
if (carry == 1)
*sumptr += 1;
/* Adjust sum and return. */
_bc_rm_leading_zeros (sum);
return sum;
}
/* Perform subtraction: N2 is subtracted from N1 and the value is
returned. The signs of N1 and N2 are ignored. Also, N1 is
assumed to be larger than N2. SCALE_MIN is the minimum scale
of the result. */
bc_num
_bc_do_sub (n1, n2, scale_min)
bc_num n1, n2;
int scale_min;
{
bc_num diff;
int diff_scale, diff_len;
int min_scale, min_len;
char *n1ptr, *n2ptr, *diffptr;
int borrow, count, val;
/* Allocate temporary storage. */
diff_len = MAX (n1->n_len, n2->n_len);
diff_scale = MAX (n1->n_scale, n2->n_scale);
min_len = MIN (n1->n_len, n2->n_len);
min_scale = MIN (n1->n_scale, n2->n_scale);
diff = bc_new_num (diff_len, MAX(diff_scale, scale_min));
/* Zero extra digits made by scale_min. */
if (scale_min > diff_scale)
{
diffptr = (char *) (diff->n_value + diff_len + diff_scale);
for (count = scale_min - diff_scale; count > 0; count--)
*diffptr++ = 0;
}
/* Initialize the subtract. */
n1ptr = (char *) (n1->n_value + n1->n_len + n1->n_scale -1);
n2ptr = (char *) (n2->n_value + n2->n_len + n2->n_scale -1);
diffptr = (char *) (diff->n_value + diff_len + diff_scale -1);
/* Subtract the numbers. */
borrow = 0;
/* Take care of the longer scaled number. */
if (n1->n_scale != min_scale)
{
/* n1 has the longer scale */
for (count = n1->n_scale - min_scale; count > 0; count--)
*diffptr-- = *n1ptr--;
}
else
{
/* n2 has the longer scale */
for (count = n2->n_scale - min_scale; count > 0; count--)
{
val = - *n2ptr-- - borrow;
if (val < 0)
{
val += BASE;
borrow = 1;
}
else
borrow = 0;
*diffptr-- = val;
}
}
/* Now do the equal length scale and integer parts. */
for (count = 0; count < min_len + min_scale; count++)
{
val = *n1ptr-- - *n2ptr-- - borrow;
if (val < 0)
{
val += BASE;
borrow = 1;
}
else
borrow = 0;
*diffptr-- = val;
}
/* If n1 has more digits then n2, we now do that subtract. */
if (diff_len != min_len)
{
for (count = diff_len - min_len; count > 0; count--)
{
val = *n1ptr-- - borrow;
if (val < 0)
{
val += BASE;
borrow = 1;
}
else
borrow = 0;
*diffptr-- = val;
}
}
/* Clean up and return. */
_bc_rm_leading_zeros (diff);
return diff;
}

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/* init.c: bcmath library file. */
/*
Copyright (C) 1991, 1992, 1993, 1994, 1997 Free Software Foundation, Inc.
Copyright (C) 2000 Philip A. Nelson
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details. (COPYING.LIB)
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to:
The Free Software Foundation, Inc.
59 Temple Place, Suite 330
Boston, MA 02111-1307 USA.
You may contact the author by:
e-mail: philnelson@acm.org
us-mail: Philip A. Nelson
Computer Science Department, 9062
Western Washington University
Bellingham, WA 98226-9062
*************************************************************************/
#include <config.h>
#include <stdio.h>
#include <assert.h>
#include <stdlib.h>
#include <ctype.h>
#include <stdarg.h>
#include "bcmath.h"
#include "private.h"
/* Storage used for special numbers. */
bc_num _zero_;
bc_num _one_;
bc_num _two_;
bc_num _bc_Free_list = NULL;
/* new_num allocates a number and sets fields to known values. */
bc_num
bc_new_num (length, scale)
int length, scale;
{
bc_num temp;
/* PHP Change: malloc() -> emalloc(), removed free_list code */
temp = (bc_num) emalloc (sizeof(bc_struct)+length+scale);
#if 0
if (_bc_Free_list != NULL) {
temp = _bc_Free_list;
_bc_Free_list = temp->n_next;
} else {
temp = (bc_num) emalloc (sizeof(bc_struct));
if (temp == NULL) bc_out_of_memory ();
}
#endif
temp->n_sign = PLUS;
temp->n_len = length;
temp->n_scale = scale;
temp->n_refs = 1;
/* PHP Change: malloc() -> emalloc() */
temp->n_ptr = (char *) emalloc (length+scale);
if (temp->n_ptr == NULL) bc_out_of_memory();
temp->n_value = temp->n_ptr;
memset (temp->n_ptr, 0, length+scale);
return temp;
}
/* "Frees" a bc_num NUM. Actually decreases reference count and only
frees the storage if reference count is zero. */
void
bc_free_num (num)
bc_num *num;
{
if (*num == NULL) return;
(*num)->n_refs--;
if ((*num)->n_refs == 0) {
if ((*num)->n_ptr)
/* PHP Change: free() -> efree(), removed free_list code */
efree ((*num)->n_ptr);
efree(*num);
#if 0
(*num)->n_next = _bc_Free_list;
_bc_Free_list = *num;
#endif
}
*num = NULL;
}
/* Intitialize the number package! */
void
bc_init_numbers ()
{
_zero_ = bc_new_num (1,0);
_one_ = bc_new_num (1,0);
_one_->n_value[0] = 1;
_two_ = bc_new_num (1,0);
_two_->n_value[0] = 2;
}
/* Make a copy of a number! Just increments the reference count! */
bc_num
bc_copy_num (num)
bc_num num;
{
num->n_refs++;
return num;
}
/* Initialize a number NUM by making it a copy of zero. */
void
bc_init_num (num)
bc_num *num;
{
*num = bc_copy_num (_zero_);
}

84
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/* int2num.c: bcmath library file. */
/*
Copyright (C) 1991, 1992, 1993, 1994, 1997 Free Software Foundation, Inc.
Copyright (C) 2000 Philip A. Nelson
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details. (COPYING.LIB)
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to:
The Free Software Foundation, Inc.
59 Temple Place, Suite 330
Boston, MA 02111-1307 USA.
You may contact the author by:
e-mail: philnelson@acm.org
us-mail: Philip A. Nelson
Computer Science Department, 9062
Western Washington University
Bellingham, WA 98226-9062
*************************************************************************/
#include <config.h>
#include <stdio.h>
#include <assert.h>
#include <stdlib.h>
#include <ctype.h>
#include <stdarg.h>
#include "bcmath.h"
#include "private.h"
/* Convert an integer VAL to a bc number NUM. */
void
bc_int2num (num, val)
bc_num *num;
int val;
{
char buffer[30];
char *bptr, *vptr;
int ix = 1;
char neg = 0;
/* Sign. */
if (val < 0)
{
neg = 1;
val = -val;
}
/* Get things going. */
bptr = buffer;
*bptr++ = val % BASE;
val = val / BASE;
/* Extract remaining digits. */
while (val != 0)
{
*bptr++ = val % BASE;
val = val / BASE;
ix++; /* Count the digits. */
}
/* Make the number. */
bc_free_num (num);
*num = bc_new_num (ix, 0);
if (neg) (*num)->n_sign = MINUS;
/* Assign the digits. */
vptr = (*num)->n_value;
while (ix-- > 0)
*vptr++ = *--bptr;
}

69
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/* nearzero.c: bcmath library file. */
/*
Copyright (C) 1991, 1992, 1993, 1994, 1997 Free Software Foundation, Inc.
Copyright (C) 2000 Philip A. Nelson
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details. (COPYING.LIB)
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to:
The Free Software Foundation, Inc.
59 Temple Place, Suite 330
Boston, MA 02111-1307 USA.
You may contact the author by:
e-mail: philnelson@acm.org
us-mail: Philip A. Nelson
Computer Science Department, 9062
Western Washington University
Bellingham, WA 98226-9062
*************************************************************************/
#include <config.h>
#include <stdio.h>
#include <assert.h>
#include <stdlib.h>
#include <ctype.h>
#include <stdarg.h>
#include "bcmath.h"
#include "private.h"
/* In some places we need to check if the number NUM is almost zero.
Specifically, all but the last digit is 0 and the last digit is 1.
Last digit is defined by scale. */
char
bc_is_near_zero (num, scale)
bc_num num;
int scale;
{
int count;
char *nptr;
/* Error checking */
if (scale > num->n_scale)
scale = num->n_scale;
/* Initialize */
count = num->n_len + scale;
nptr = num->n_value;
/* The check */
while ((count > 0) && (*nptr++ == 0)) count--;
if (count != 0 && (count != 1 || *--nptr != 1))
return FALSE;
else
return TRUE;
}

49
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/* neg.c: bcmath library file. */
/*
Copyright (C) 1991, 1992, 1993, 1994, 1997 Free Software Foundation, Inc.
Copyright (C) 2000 Philip A. Nelson
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details. (COPYING.LIB)
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to:
The Free Software Foundation, Inc.
59 Temple Place, Suite 330
Boston, MA 02111-1307 USA.
You may contact the author by:
e-mail: philnelson@acm.org
us-mail: Philip A. Nelson
Computer Science Department, 9062
Western Washington University
Bellingham, WA 98226-9062
*************************************************************************/
#include <config.h>
#include <stdio.h>
#include <assert.h>
#include <stdlib.h>
#include <ctype.h>
#include <stdarg.h>
#include "bcmath.h"
#include "private.h"
/* In some places we need to check if the number is negative. */
char
bc_is_neg (num)
bc_num num;
{
return num->n_sign == MINUS;
}

70
ext/bcmath/libbcmath/src/num2long.c Normal file
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/* num2long.c: bcmath library file. */
/*
Copyright (C) 1991, 1992, 1993, 1994, 1997 Free Software Foundation, Inc.
Copyright (C) 2000 Philip A. Nelson
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details. (COPYING.LIB)
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to:
The Free Software Foundation, Inc.
59 Temple Place, Suite 330
Boston, MA 02111-1307 USA.
You may contact the author by:
e-mail: philnelson@acm.org
us-mail: Philip A. Nelson
Computer Science Department, 9062
Western Washington University
Bellingham, WA 98226-9062
*************************************************************************/
#include <config.h>
#include <stdio.h>
#include <assert.h>
#include <stdlib.h>
#include <ctype.h>
#include <stdarg.h>
#include "bcmath.h"
#include "private.h"
/* Convert a number NUM to a long. The function returns only the integer
part of the number. For numbers that are too large to represent as
a long, this function returns a zero. This can be detected by checking
the NUM for zero after having a zero returned. */
long
bc_num2long (num)
bc_num num;
{
long val;
char *nptr;
int index;
/* Extract the int value, ignore the fraction. */
val = 0;
nptr = num->n_value;
for (index=num->n_len; (index>0) && (val<=(LONG_MAX/BASE)); index--)
val = val*BASE + *nptr++;
/* Check for overflow. If overflow, return zero. */
if (index>0) val = 0;
if (val < 0) val = 0;
/* Return the value. */
if (num->n_sign == PLUS)
return (val);
else
return (-val);
}

79
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/* num2str.c: bcmath library file. */
/*
Copyright (C) 1991, 1992, 1993, 1994, 1997 Free Software Foundation, Inc.
Copyright (C) 2000 Philip A. Nelson
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details. (COPYING.LIB)
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to:
The Free Software Foundation, Inc.
59 Temple Place, Suite 330
Boston, MA 02111-1307 USA.
You may contact the author by:
e-mail: philnelson@acm.org
us-mail: Philip A. Nelson
Computer Science Department, 9062
Western Washington University
Bellingham, WA 98226-9062
*************************************************************************/
#include <config.h>
#include <stdio.h>
#include <assert.h>
#include <stdlib.h>
#include <ctype.h>
#include <stdarg.h>
#include "bcmath.h"
#include "private.h"
/* Convert a numbers to a string. Base 10 only.*/
char
*bc_num2str (num)
bc_num num;
{
char *str, *sptr;
char *nptr;
int index, signch;
/* Allocate the string memory. */
signch = ( num->n_sign == PLUS ? 0 : 1 ); /* Number of sign chars. */
if (num->n_scale > 0)
str = (char *) malloc (num->n_len + num->n_scale + 2 + signch);
else
str = (char *) malloc (num->n_len + 1 + signch);
if (str == NULL) bc_out_of_memory();
/* The negative sign if needed. */
sptr = str;
if (signch) *sptr++ = '-';
/* Load the whole number. */
nptr = num->n_value;
for (index=num->n_len; index>0; index--)
*sptr++ = BCD_CHAR(*nptr++);
/* Now the fraction. */
if (num->n_scale > 0)
{
*sptr++ = '.';
for (index=0; index<num->n_scale; index++)
*sptr++ = BCD_CHAR(*nptr++);
}
/* Terminate the string and return it! */
*sptr = '\0';
return (str);
}

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/* outofmem.c: bcmath library file. */
/*
Copyright (C) 1991, 1992, 1993, 1994, 1997 Free Software Foundation, Inc.
Copyright (C) 2000 Philip A. Nelson
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details. (COPYING.LIB)
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to:
The Free Software Foundation, Inc.
59 Temple Place, Suite 330
Boston, MA 02111-1307 USA.
You may contact the author by:
e-mail: philnelson@acm.org
us-mail: Philip A. Nelson
Computer Science Department, 9062
Western Washington University
Bellingham, WA 98226-9062
*************************************************************************/
#include <config.h>
#include <stdio.h>
#include <assert.h>
#include <stdlib.h>
#include <ctype.h>
#include <stdarg.h>
#include "bcmath.h"
#include "private.h"
void bc_out_of_memory (void)
{
(void) fprintf (stderr, "bcmath: out of memory!\n");
exit (1);
}

212
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/* output.c: bcmath library file. */
/*
Copyright (C) 1991, 1992, 1993, 1994, 1997 Free Software Foundation, Inc.
Copyright (C) 2000 Philip A. Nelson
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details. (COPYING.LIB)
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to:
The Free Software Foundation, Inc.
59 Temple Place, Suite 330
Boston, MA 02111-1307 USA.
You may contact the author by:
e-mail: philnelson@acm.org
us-mail: Philip A. Nelson
Computer Science Department, 9062
Western Washington University
Bellingham, WA 98226-9062
*************************************************************************/
#include <config.h>
#include <stdio.h>
#include <assert.h>
#include <stdlib.h>
#include <ctype.h>
#include <stdarg.h>
#include "bcmath.h"
#include "private.h"
/* The following routines provide output for bcd numbers package
using the rules of POSIX bc for output. */
/* This structure is used for saving digits in the conversion process. */
typedef struct stk_rec {
long digit;
struct stk_rec *next;
} stk_rec;
/* The reference string for digits. */
static char ref_str[] = "0123456789ABCDEF";
/* A special output routine for "multi-character digits." Exactly
SIZE characters must be output for the value VAL. If SPACE is
non-zero, we must output one space before the number. OUT_CHAR
is the actual routine for writing the characters. */
void
bc_out_long (val, size, space, out_char)
long val;
int size, space;
#ifdef __STDC__
void (*out_char)(int);
#else
void (*out_char)();
#endif
{
char digits[40];
int len, ix;
if (space) (*out_char) (' ');
sprintf (digits, "%ld", val);
len = strlen (digits);
while (size > len)
{
(*out_char) ('0');
size--;
}
for (ix=0; ix < len; ix++)
(*out_char) (digits[ix]);
}
/* Output of a bcd number. NUM is written in base O_BASE using OUT_CHAR
as the routine to do the actual output of the characters. */
void
bc_out_num (num, o_base, out_char, leading_zero)
bc_num num;
int o_base;
#ifdef __STDC__
void (*out_char)(int);
#else
void (*out_char)();
#endif
int leading_zero;
{
char *nptr;
int index, fdigit, pre_space;
stk_rec *digits, *temp;
bc_num int_part, frac_part, base, cur_dig, t_num, max_o_digit;
/* The negative sign if needed. */
if (num->n_sign == MINUS) (*out_char) ('-');
/* Output the number. */
if (bc_is_zero (num))
(*out_char) ('0');
else
if (o_base == 10)
{
/* The number is in base 10, do it the fast way. */
nptr = num->n_value;
if (num->n_len > 1 || *nptr != 0)
for (index=num->n_len; index>0; index--)
(*out_char) (BCD_CHAR(*nptr++));
else
nptr++;
if (leading_zero && bc_is_zero (num))
(*out_char) ('0');
/* Now the fraction. */
if (num->n_scale > 0)
{
(*out_char) ('.');
for (index=0; index<num->n_scale; index++)
(*out_char) (BCD_CHAR(*nptr++));
}
}
else
{
/* special case ... */
if (leading_zero && bc_is_zero (num))
(*out_char) ('0');
/* The number is some other base. */
digits = NULL;
bc_init_num (&int_part);
bc_divide (num, _one_, &int_part, 0);
bc_init_num (&frac_part);
bc_init_num (&cur_dig);
bc_init_num (&base);
bc_sub (num, int_part, &frac_part, 0);
/* Make the INT_PART and FRAC_PART positive. */
int_part->n_sign = PLUS;
frac_part->n_sign = PLUS;
bc_int2num (&base, o_base);
bc_init_num (&max_o_digit);
bc_int2num (&max_o_digit, o_base-1);
/* Get the digits of the integer part and push them on a stack. */
while (!bc_is_zero (int_part))
{
bc_modulo (int_part, base, &cur_dig, 0);
/* PHP Change: malloc() -> emalloc() */
temp = (stk_rec *) emalloc (sizeof(stk_rec));
if (temp == NULL) bc_out_of_memory();
temp->digit = bc_num2long (cur_dig);
temp->next = digits;
digits = temp;
bc_divide (int_part, base, &int_part, 0);
}
/* Print the digits on the stack. */
if (digits != NULL)
{
/* Output the digits. */
while (digits != NULL)
{
temp = digits;
digits = digits->next;
if (o_base <= 16)
(*out_char) (ref_str[ (int) temp->digit]);
else
bc_out_long (temp->digit, max_o_digit->n_len, 1, out_char);
free (temp);
}
}
/* Get and print the digits of the fraction part. */
if (num->n_scale > 0)
{
(*out_char) ('.');
pre_space = 0;
t_num = bc_copy_num (_one_);
while (t_num->n_len <= num->n_scale) {
bc_multiply (frac_part, base, &frac_part, num->n_scale);
fdigit = bc_num2long (frac_part);
bc_int2num (&int_part, fdigit);
bc_sub (frac_part, int_part, &frac_part, 0);
if (o_base <= 16)
(*out_char) (ref_str[fdigit]);
else {
bc_out_long (fdigit, max_o_digit->n_len, pre_space, out_char);
pre_space = 1;
}
bc_multiply (t_num, base, &t_num, 0);
}
bc_free_num (&t_num);
}
/* Clean up. */
bc_free_num (&int_part);
bc_free_num (&frac_part);
bc_free_num (&base);
bc_free_num (&cur_dig);
bc_free_num (&max_o_digit);
}
}

41
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/* private.h: bcmath library header. */
/*
Copyright (C) 1991, 1992, 1993, 1994, 1997 Free Software Foundation, Inc.
Copyright (C) 2000 Philip A. Nelson
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details. (COPYING.LIB)
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to:
The Free Software Foundation, Inc.
59 Temple Place, Suite 330
Boston, MA 02111-1307 USA.
You may contact the author by:
e-mail: philnelson@acm.org
us-mail: Philip A. Nelson
Computer Science Department, 9062
Western Washington University
Bellingham, WA 98226-9062
*************************************************************************/
/* "Private" routines to bcmath. */
/* variables */
bc_num _bc_Free_list;
/* routines */
int _bc_do_compare (bc_num n1, bc_num n2, int use_sign, int ignore_last);
bc_num _bc_do_add (bc_num n1, bc_num n2, int scale_min);
bc_num _bc_do_sub (bc_num n1, bc_num n2, int scale_min);
void _bc_rm_leading_zeros (bc_num num);

126
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/* raise.c: bcmath library file. */
/*
Copyright (C) 1991, 1992, 1993, 1994, 1997 Free Software Foundation, Inc.
Copyright (C) 2000 Philip A. Nelson
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details. (COPYING.LIB)
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to:
The Free Software Foundation, Inc.
59 Temple Place, Suite 330
Boston, MA 02111-1307 USA.
You may contact the author by:
e-mail: philnelson@acm.org
us-mail: Philip A. Nelson
Computer Science Department, 9062
Western Washington University
Bellingham, WA 98226-9062
*************************************************************************/
#include <config.h>
#include <stdio.h>
#include <assert.h>
#include <stdlib.h>
#include <ctype.h>
#include <stdarg.h>
#include "bcmath.h"
#include "private.h"
/* Raise NUM1 to the NUM2 power. The result is placed in RESULT.
Maximum exponent is LONG_MAX. If a NUM2 is not an integer,
only the integer part is used. */
void
bc_raise (num1, num2, result, scale)
bc_num num1, num2, *result;
int scale;
{
bc_num temp, power;
long exponent;
int rscale;
int pwrscale;
int calcscale;
char neg;
/* Check the exponent for scale digits and convert to a long. */
if (num2->n_scale != 0)
bc_rt_warn ("non-zero scale in exponent");
exponent = bc_num2long (num2);
if (exponent == 0 && (num2->n_len > 1 || num2->n_value[0] != 0))
bc_rt_error ("exponent too large in raise");
/* Special case if exponent is a zero. */
if (exponent == 0)
{
bc_free_num (result);
*result = bc_copy_num (_one_);
return;
}
/* Other initializations. */
if (exponent < 0)
{
neg = TRUE;
exponent = -exponent;
rscale = scale;
}
else
{
neg = FALSE;
rscale = MIN (num1->n_scale*exponent, MAX(scale, num1->n_scale));
}
/* Set initial value of temp. */
power = bc_copy_num (num1);
pwrscale = num1->n_scale;
while ((exponent & 1) == 0)
{
pwrscale = 2*pwrscale;
bc_multiply (power, power, &power, pwrscale);
exponent = exponent >> 1;
}
temp = bc_copy_num (power);
calcscale = pwrscale;
exponent = exponent >> 1;
/* Do the calculation. */
while (exponent > 0)
{
pwrscale = 2*pwrscale;
bc_multiply (power, power, &power, pwrscale);
if ((exponent & 1) == 1) {
calcscale = pwrscale + calcscale;
bc_multiply (temp, power, &temp, calcscale);
}
exponent = exponent >> 1;
}
/* Assign the value. */
if (neg)
{
bc_divide (_one_, temp, result, rscale);
bc_free_num (&temp);
}
else
{
bc_free_num (result);
*result = temp;
if ((*result)->n_scale > rscale)
(*result)->n_scale = rscale;
}
bc_free_num (&power);
}

99
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/* raisemod.c: bcmath library file. */
/*
Copyright (C) 1991, 1992, 1993, 1994, 1997 Free Software Foundation, Inc.
Copyright (C) 2000 Philip A. Nelson
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details. (COPYING.LIB)
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to:
The Free Software Foundation, Inc.
59 Temple Place, Suite 330
Boston, MA 02111-1307 USA.
You may contact the author by:
e-mail: philnelson@acm.org
us-mail: Philip A. Nelson
Computer Science Department, 9062
Western Washington University
Bellingham, WA 98226-9062
*************************************************************************/
#include <config.h>
#include <stdio.h>
#include <assert.h>
#include <stdlib.h>
#include <ctype.h>
#include <stdarg.h>
#include "bcmath.h"
#include "private.h"
/* Raise BASE to the EXPO power, reduced modulo MOD. The result is
placed in RESULT. If a EXPO is not an integer,
only the integer part is used. */
int
bc_raisemod (base, expo, mod, result, scale)
bc_num base, expo, mod, *result;
int scale;
{
bc_num power, exponent, parity, temp;
int rscale;
/* Check for correct numbers. */
if (bc_is_zero(mod)) return -1;
if (bc_is_neg(expo)) return -1;
/* Set initial values. */
power = bc_copy_num (base);
exponent = bc_copy_num (expo);
temp = bc_copy_num (_one_);
bc_init_num(&parity);
/* Check the base for scale digits. */
if (base->n_scale != 0)
bc_rt_warn ("non-zero scale in base");
/* Check the exponent for scale digits. */
if (exponent->n_scale != 0)
{
bc_rt_warn ("non-zero scale in exponent");
bc_divide (exponent, _one_, &exponent, 0); /*truncate */
}
/* Check the modulus for scale digits. */
if (mod->n_scale != 0)
bc_rt_warn ("non-zero scale in modulus");
/* Do the calculation. */
rscale = MAX(scale, base->n_scale);
while ( !bc_is_zero(exponent) )
{
(void) bc_divmod (exponent, _two_, &exponent, &parity, 0);
if ( !bc_is_zero(parity) )
{
bc_multiply (temp, power, &temp, rscale);
(void) bc_modulo (temp, mod, &temp, scale);
}
bc_multiply (power, power, &power, rscale);
(void) bc_modulo (power, mod, &power, scale);
}
/* Assign the value. */
bc_free_num (&power);
bc_free_num (&exponent);
bc_free_num (result);
*result = temp;
return 0; /* Everything is OK. */
}

304
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/* recmul.c: bcmath library file. */
/*
Copyright (C) 1991, 1992, 1993, 1994, 1997 Free Software Foundation, Inc.
Copyright (C) 2000 Philip A. Nelson
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details. (COPYING.LIB)
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to:
The Free Software Foundation, Inc.
59 Temple Place, Suite 330
Boston, MA 02111-1307 USA.
You may contact the author by:
e-mail: philnelson@acm.org
us-mail: Philip A. Nelson
Computer Science Department, 9062
Western Washington University
Bellingham, WA 98226-9062
*************************************************************************/
#include <config.h>
#include <stdio.h>
#include <assert.h>
#include <stdlib.h>
#include <ctype.h>
#include <stdarg.h>
#include "bcmath.h"
#include "private.h"
/* Recursive vs non-recursive multiply crossover ranges. */
#if defined(MULDIGITS)
#include "muldigits.h"
#else
#define MUL_BASE_DIGITS 80
#endif
int mul_base_digits = MUL_BASE_DIGITS;
#define MUL_SMALL_DIGITS mul_base_digits/4
/* Multiply utility routines */
static bc_num
new_sub_num (length, scale, value)
int length, scale;
char *value;
{
bc_num temp;
if (_bc_Free_list != NULL) {
temp = _bc_Free_list;
_bc_Free_list = temp->n_next;
} else {
temp = (bc_num) malloc (sizeof(bc_struct));
if (temp == NULL) bc_out_of_memory ();
}
temp->n_sign = PLUS;
temp->n_len = length;
temp->n_scale = scale;
temp->n_refs = 1;
temp->n_ptr = NULL;
temp->n_value = value;
return temp;
}
static void
_bc_simp_mul (bc_num n1, int n1len, bc_num n2, int n2len, bc_num *prod,
int full_scale)
{
char *n1ptr, *n2ptr, *pvptr;
char *n1end, *n2end; /* To the end of n1 and n2. */
int indx, sum, prodlen;
prodlen = n1len+n2len+1;
*prod = bc_new_num (prodlen, 0);
n1end = (char *) (n1->n_value + n1len - 1);
n2end = (char *) (n2->n_value + n2len - 1);
pvptr = (char *) ((*prod)->n_value + prodlen - 1);
sum = 0;
/* Here is the loop... */
for (indx = 0; indx < prodlen-1; indx++)
{
n1ptr = (char *) (n1end - MAX(0, indx-n2len+1));
n2ptr = (char *) (n2end - MIN(indx, n2len-1));
while ((n1ptr >= n1->n_value) && (n2ptr <= n2end))
sum += *n1ptr-- * *n2ptr++;
*pvptr-- = sum % BASE;
sum = sum / BASE;
}
*pvptr = sum;
}
/* A special adder/subtractor for the recursive divide and conquer
multiply algorithm. Note: if sub is called, accum must
be larger that what is being subtracted. Also, accum and val
must have n_scale = 0. (e.g. they must look like integers. *) */
static void
_bc_shift_addsub (bc_num accum, bc_num val, int shift, int sub)
{
signed char *accp, *valp;
int count, carry;
count = val->n_len;
if (val->n_value[0] == 0)
count--;
assert (accum->n_len+accum->n_scale >= shift+count);
/* Set up pointers and others */
accp = (signed char *)(accum->n_value +
accum->n_len + accum->n_scale - shift - 1);
valp = (signed char *)(val->n_value + val->n_len - 1);
carry = 0;
if (sub) {
/* Subtraction, carry is really borrow. */
while (count--) {
*accp -= *valp-- + carry;
if (*accp < 0) {
carry = 1;
*accp-- += BASE;
} else {
carry = 0;
accp--;
}
}
while (carry) {
*accp -= carry;
if (*accp < 0)
*accp-- += BASE;
else
carry = 0;
}
} else {
/* Addition */
while (count--) {
*accp += *valp-- + carry;
if (*accp > (BASE-1)) {
carry = 1;
*accp-- -= BASE;
} else {
carry = 0;
accp--;
}
}
while (carry) {
*accp += carry;
if (*accp > (BASE-1))
*accp-- -= BASE;
else
carry = 0;
}
}
}
/* Recursive divide and conquer multiply algorithm.
Based on
Let u = u0 + u1*(b^n)
Let v = v0 + v1*(b^n)
Then uv = (B^2n+B^n)*u1*v1 + B^n*(u1-u0)*(v0-v1) + (B^n+1)*u0*v0
B is the base of storage, number of digits in u1,u0 close to equal.
*/
static void
_bc_rec_mul (bc_num u, int ulen, bc_num v, int vlen, bc_num *prod,
int full_scale)
{
bc_num u0, u1, v0, v1;
int u0len, v0len;
bc_num m1, m2, m3, d1, d2;
int n, prodlen, m1zero;
int d1len, d2len;
/* Base case? */
if ((ulen+vlen) < mul_base_digits
|| ulen < MUL_SMALL_DIGITS
|| vlen < MUL_SMALL_DIGITS ) {
_bc_simp_mul (u, ulen, v, vlen, prod, full_scale);
return;
}
/* Calculate n -- the u and v split point in digits. */
n = (MAX(ulen, vlen)+1) / 2;
/* Split u and v. */
if (ulen < n) {
u1 = bc_copy_num (_zero_);
u0 = new_sub_num (ulen,0, u->n_value);
} else {
u1 = new_sub_num (ulen-n, 0, u->n_value);
u0 = new_sub_num (n, 0, u->n_value+ulen-n);
}
if (vlen < n) {
v1 = bc_copy_num (_zero_);
v0 = new_sub_num (vlen,0, v->n_value);
} else {
v1 = new_sub_num (vlen-n, 0, v->n_value);
v0 = new_sub_num (n, 0, v->n_value+vlen-n);
}
_bc_rm_leading_zeros (u1);
_bc_rm_leading_zeros (u0);
u0len = u0->n_len;
_bc_rm_leading_zeros (v1);
_bc_rm_leading_zeros (v0);
v0len = v0->n_len;
m1zero = bc_is_zero(u1) || bc_is_zero(v1);
/* Calculate sub results ... */
bc_init_num(&d1);
bc_init_num(&d2);
bc_sub (u1, u0, &d1, 0);
d1len = d1->n_len;
bc_sub (v0, v1, &d2, 0);
d2len = d2->n_len;
/* Do recursive multiplies and shifted adds. */
if (m1zero)
m1 = bc_copy_num (_zero_);
else
_bc_rec_mul (u1, u1->n_len, v1, v1->n_len, &m1, 0);
if (bc_is_zero(d1) || bc_is_zero(d2))
m2 = bc_copy_num (_zero_);
else
_bc_rec_mul (d1, d1len, d2, d2len, &m2, 0);
if (bc_is_zero(u0) || bc_is_zero(v0))
m3 = bc_copy_num (_zero_);
else
_bc_rec_mul (u0, u0->n_len, v0, v0->n_len, &m3, 0);
/* Initialize product */
prodlen = ulen+vlen+1;
*prod = bc_new_num(prodlen, 0);
if (!m1zero) {
_bc_shift_addsub (*prod, m1, 2*n, 0);
_bc_shift_addsub (*prod, m1, n, 0);
}
_bc_shift_addsub (*prod, m3, n, 0);
_bc_shift_addsub (*prod, m3, 0, 0);
_bc_shift_addsub (*prod, m2, n, d1->n_sign != d2->n_sign);
/* Now clean up! */
bc_free_num (&u1);
bc_free_num (&u0);
bc_free_num (&v1);
bc_free_num (&m1);
bc_free_num (&v0);
bc_free_num (&m2);
bc_free_num (&m3);
bc_free_num (&d1);
bc_free_num (&d2);
}
/* The multiply routine. N2 times N1 is put int PROD with the scale of
the result being MIN(N2 scale+N1 scale, MAX (SCALE, N2 scale, N1 scale)).
*/
void
bc_multiply (n1, n2, prod, scale)
bc_num n1, n2, *prod;
int scale;
{
bc_num pval;
int len1, len2;
int full_scale, prod_scale;
/* Initialize things. */
len1 = n1->n_len + n1->n_scale;
len2 = n2->n_len + n2->n_scale;
full_scale = n1->n_scale + n2->n_scale;
prod_scale = MIN(full_scale,MAX(scale,MAX(n1->n_scale,n2->n_scale)));
/* Do the multiply */
_bc_rec_mul (n1, len1, n2, len2, &pval, full_scale);
/* Assign to prod and clean up the number. */
pval->n_sign = ( n1->n_sign == n2->n_sign ? PLUS : MINUS );
pval->n_value = pval->n_ptr;
pval->n_len = len2 + len1 + 1 - full_scale;
pval->n_scale = prod_scale;
_bc_rm_leading_zeros (pval);
if (bc_is_zero (pval))
pval->n_sign = PLUS;
bc_free_num (prod);
*prod = pval;
}

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/* rmzero.c: bcmath library file. */
/*
Copyright (C) 1991, 1992, 1993, 1994, 1997 Free Software Foundation, Inc.
Copyright (C) 2000 Philip A. Nelson
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details. (COPYING.LIB)
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to:
The Free Software Foundation, Inc.
59 Temple Place, Suite 330
Boston, MA 02111-1307 USA.
You may contact the author by:
e-mail: philnelson@acm.org
us-mail: Philip A. Nelson
Computer Science Department, 9062
Western Washington University
Bellingham, WA 98226-9062
*************************************************************************/
#include <config.h>
#include <stdio.h>
#include <assert.h>
#include <stdlib.h>
#include <ctype.h>
#include <stdarg.h>
#include "bcmath.h"
#include "private.h"
/* For many things, we may have leading zeros in a number NUM.
_bc_rm_leading_zeros just moves the data "value" pointer to the
correct place and adjusts the length. */
void
_bc_rm_leading_zeros (num)
bc_num num;
{
/* We can move n_value to point to the first non zero digit! */
while (*num->n_value == 0 && num->n_len > 1) {
num->n_value++;
num->n_len--;
}
}

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/* rt.c: bcmath library file. */
/*
Copyright (C) 1991, 1992, 1993, 1994, 1997 Free Software Foundation, Inc.
Copyright (C) 2000 Philip A. Nelson
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details. (COPYING.LIB)
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to:
The Free Software Foundation, Inc.
59 Temple Place, Suite 330
Boston, MA 02111-1307 USA.
You may contact the author by:
e-mail: philnelson@acm.org
us-mail: Philip A. Nelson
Computer Science Department, 9062
Western Washington University
Bellingham, WA 98226-9062
*************************************************************************/
#include <config.h>
#include <stdio.h>
#include <assert.h>
#include <stdlib.h>
#include <ctype.h>
#include <stdarg.h>
#include "bcmath.h"
#include "private.h"
void bc_rt_warn (char *mesg ,...)
{
va_list args;
char error_mesg [255];
va_start (args, mesg);
vsprintf (error_mesg, mesg, args);
va_end (args);
fprintf (stderr, "bc math warning: %s\n", error_mesg);
}
void bc_rt_error (char *mesg ,...)
{
va_list args;
char error_mesg [255];
va_start (args, mesg);
vsprintf (error_mesg, mesg, args);
va_end (args);
fprintf (stderr, "bc math error: %s\n", error_mesg);
}

131
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/* sqrt.c: bcmath library file. */
/*
Copyright (C) 1991, 1992, 1993, 1994, 1997 Free Software Foundation, Inc.
Copyright (C) 2000 Philip A. Nelson
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details. (COPYING.LIB)
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to:
The Free Software Foundation, Inc.
59 Temple Place, Suite 330
Boston, MA 02111-1307 USA.
You may contact the author by:
e-mail: philnelson@acm.org
us-mail: Philip A. Nelson
Computer Science Department, 9062
Western Washington University
Bellingham, WA 98226-9062
*************************************************************************/
#include <config.h>
#include <stdio.h>
#include <assert.h>
#include <stdlib.h>
#include <ctype.h>
#include <stdarg.h>
#include "bcmath.h"
#include "private.h"
/* Take the square root NUM and return it in NUM with SCALE digits
after the decimal place. */
int
bc_sqrt (num, scale)
bc_num *num;
int scale;
{
int rscale, cmp_res, done;
int cscale;
bc_num guess, guess1, point5, diff;
/* Initial checks. */
cmp_res = bc_compare (*num, _zero_);
if (cmp_res < 0)
return 0; /* error */
else
{
if (cmp_res == 0)
{
bc_free_num (num);
*num = bc_copy_num (_zero_);
return 1;
}
}
cmp_res = bc_compare (*num, _one_);
if (cmp_res == 0)
{
bc_free_num (num);
*num = bc_copy_num (_one_);
return 1;
}
/* Initialize the variables. */
rscale = MAX (scale, (*num)->n_scale);
bc_init_num(&guess);
bc_init_num(&guess1);
bc_init_num(&diff);
point5 = bc_new_num (1,1);
point5->n_value[1] = 5;
/* Calculate the initial guess. */
if (cmp_res < 0)
{
/* The number is between 0 and 1. Guess should start at 1. */
guess = bc_copy_num (_one_);
cscale = (*num)->n_scale;
}
else
{
/* The number is greater than 1. Guess should start at 10^(exp/2). */
bc_int2num (&guess,10);
bc_int2num (&guess1,(*num)->n_len);
bc_multiply (guess1, point5, &guess1, 0);
guess1->n_scale = 0;
bc_raise (guess, guess1, &guess, 0);
bc_free_num (&guess1);
cscale = 3;
}
/* Find the square root using Newton's algorithm. */
done = FALSE;
while (!done)
{
bc_free_num (&guess1);
guess1 = bc_copy_num (guess);
bc_divide (*num, guess, &guess, cscale);
bc_add (guess, guess1, &guess, 0);
bc_multiply (guess, point5, &guess, cscale);
bc_sub (guess, guess1, &diff, cscale+1);
if (bc_is_near_zero (diff, cscale))
{
if (cscale < rscale+1)
cscale = MIN (cscale*3, rscale+1);
else
done = TRUE;
}
}
/* Assign the number and clean up. */
bc_free_num (num);
bc_divide (guess,_one_,num,rscale);
bc_free_num (&guess);
bc_free_num (&guess1);
bc_free_num (&point5);
bc_free_num (&diff);
return 1;
}

112
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/* str2num.c: bcmath library file. */
/*
Copyright (C) 1991, 1992, 1993, 1994, 1997 Free Software Foundation, Inc.
Copyright (C) 2000 Philip A. Nelson
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details. (COPYING.LIB)
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to:
The Free Software Foundation, Inc.
59 Temple Place, Suite 330
Boston, MA 02111-1307 USA.
You may contact the author by:
e-mail: philnelson@acm.org
us-mail: Philip A. Nelson
Computer Science Department, 9062
Western Washington University
Bellingham, WA 98226-9062
*************************************************************************/
#include <config.h>
#include <stdio.h>
#include <assert.h>
#include <stdlib.h>
#include <ctype.h>
#include <stdarg.h>
#include "bcmath.h"
#include "private.h"
/* Convert strings to bc numbers. Base 10 only.*/
void
bc_str2num (num, str, scale)
bc_num *num;
char *str;
int scale;
{
int digits, strscale;
char *ptr, *nptr;
char zero_int;
/* Prepare num. */
bc_free_num (num);
/* Check for valid number and count digits. */
ptr = str;
digits = 0;
strscale = 0;
zero_int = FALSE;
if ( (*ptr == '+') || (*ptr == '-')) ptr++; /* Sign */
while (*ptr == '0') ptr++; /* Skip leading zeros. */
while (isdigit((int)*ptr)) ptr++, digits++; /* digits */
if (*ptr == '.') ptr++; /* decimal point */
while (isdigit((int)*ptr)) ptr++, strscale++; /* digits */
if ((*ptr != '\0') || (digits+strscale == 0))
{
*num = bc_copy_num (_zero_);
return;
}
/* Adjust numbers and allocate storage and initialize fields. */
strscale = MIN(strscale, scale);
if (digits == 0)
{
zero_int = TRUE;
digits = 1;
}
*num = bc_new_num (digits, strscale);
/* Build the whole number. */
ptr = str;
if (*ptr == '-')
{
(*num)->n_sign = MINUS;
ptr++;
}
else
{
(*num)->n_sign = PLUS;
if (*ptr == '+') ptr++;
}
while (*ptr == '0') ptr++; /* Skip leading zeros. */
nptr = (*num)->n_value;
if (zero_int)
{
*nptr++ = 0;
digits = 0;
}
for (;digits > 0; digits--)
*nptr++ = CH_VAL(*ptr++);
/* Build the fractional part. */
if (strscale > 0)
{
ptr++; /* skip the decimal point! */
for (;strscale > 0; strscale--)
*nptr++ = CH_VAL(*ptr++);
}
}

90
ext/bcmath/libbcmath/src/sub.c Normal file
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/* sub.c: bcmath library file. */
/*
Copyright (C) 1991, 1992, 1993, 1994, 1997 Free Software Foundation, Inc.
Copyright (C) 2000 Philip A. Nelson
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details. (COPYING.LIB)
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to:
The Free Software Foundation, Inc.
59 Temple Place, Suite 330
Boston, MA 02111-1307 USA.
You may contact the author by:
e-mail: philnelson@acm.org
us-mail: Philip A. Nelson
Computer Science Department, 9062
Western Washington University
Bellingham, WA 98226-9062
*************************************************************************/
#include <config.h>
#include <stdio.h>
#include <assert.h>
#include <stdlib.h>
#include <ctype.h>
#include <stdarg.h>
#include "bcmath.h"
#include "private.h"
/* Here is the full subtract routine that takes care of negative numbers.
N2 is subtracted from N1 and the result placed in RESULT. SCALE_MIN
is the minimum scale for the result. */
void
bc_sub (n1, n2, result, scale_min)
bc_num n1, n2, *result;
int scale_min;
{
bc_num diff = NULL;
int cmp_res;
int res_scale;
if (n1->n_sign != n2->n_sign)
{
diff = _bc_do_add (n1, n2, scale_min);
diff->n_sign = n1->n_sign;
}
else
{
/* subtraction must be done. */
/* Compare magnitudes. */
cmp_res = _bc_do_compare (n1, n2, FALSE, FALSE);
switch (cmp_res)
{
case -1:
/* n1 is less than n2, subtract n1 from n2. */
diff = _bc_do_sub (n2, n1, scale_min);
diff->n_sign = (n2->n_sign == PLUS ? MINUS : PLUS);
break;
case 0:
/* They are equal! return zero! */
res_scale = MAX (scale_min, MAX(n1->n_scale, n2->n_scale));
diff = bc_new_num (1, res_scale);
memset (diff->n_value, 0, res_scale+1);
break;
case 1:
/* n2 is less than n1, subtract n2 from n1. */
diff = _bc_do_sub (n1, n2, scale_min);
diff->n_sign = n1->n_sign;
break;
}
}
/* Clean up and return. */
bc_free_num (result);
*result = diff;
}

65
ext/bcmath/libbcmath/src/zero.c Normal file
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/* zero.c: bcmath library file. */
/*
Copyright (C) 1991, 1992, 1993, 1994, 1997 Free Software Foundation, Inc.
Copyright (C) 2000 Philip A. Nelson
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details. (COPYING.LIB)
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to:
The Free Software Foundation, Inc.
59 Temple Place, Suite 330
Boston, MA 02111-1307 USA.
You may contact the author by:
e-mail: philnelson@acm.org
us-mail: Philip A. Nelson
Computer Science Department, 9062
Western Washington University
Bellingham, WA 98226-9062
*************************************************************************/
#include <config.h>
#include <stdio.h>
#include <assert.h>
#include <stdlib.h>
#include <ctype.h>
#include <stdarg.h>
#include "bcmath.h"
#include "private.h"
/* In some places we need to check if the number NUM is zero. */
char
bc_is_zero (num)
bc_num num;
{
int count;
char *nptr;
/* Quick check. */
if (num == _zero_) return TRUE;
/* Initialize */
count = num->n_len + num->n_scale;
nptr = num->n_value;
/* The check */
while ((count > 0) && (*nptr++ == 0)) count--;
if (count != 0)
return FALSE;
else
return TRUE;
}