These functions are used from within a compilation unit so we can
make them static, for better binary size. This changeset reduces
the size of generated ruby binary from 26,590,128 bytes to
26,584,472 bytes on my macihne.
When searching for this constant, I landed on the correct page https://ruby-doc.org/core-2.6.4/Math.html however I was using CMD+f to search for "Euler" and did not find it. If we add the full name for this constant then it will be easier to search for and find.
* math.c (math_cbrt): refine the approximation result on boundary
values by an iteration of Newton-Raphson method.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@63592 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
It seems HUGE_VAL is already used. Why not eliminate INTINITY.
NAN is also float. That of double is called nan(). This is also
fixed.
Signed-off-by: Urabe, Shyouhei <shyouhei@ruby-lang.org>
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@61938 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* math.c (math_lgamma): check the argument before calling math
function `lgamma_r` for edge cases.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@58698 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* math.c (math_gamma): check the argument before calling math
function `tgamma` for edge cases.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@58697 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* configure.in: do not use buggy tgamma() of mingw.
* missing/tgamma.c (tgamma): merge fix for inifity from
ruby_tgamma. since msvcr120.dll and later have tgamma, this
implementation will not be used.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@58691 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* math.c (tgamma): it seems that the implementaion of mswin has similar problem
with mingw.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@58685 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* math.c: [DOC] mention possibly surprising behavior of Math.sqrt
due to floating point arithmetic; also refer to BigDecimal#sqrt.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@58291 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* math.c (exp1, exp2): use immediate 0 instead of rb_mMath, which
is never used.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@56833 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* math.c (ifdef M_PI): M_PI is eventually defined in missing.h even if math.h
doesn't supply it.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@56810 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* math.c (tanh): make faster by the extract form if three
hyperbolic functions are unavailable. [Feature #12647]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@55799 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
because internal.h includes ruby.h, ruby.h includes win32.h, and
win32.h includes system's math.h.
this change is to get rid of a compiler warning (redefinition of
a macro) introduced at r55641.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@55662 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* math.c (get_double_rshift): extract bignum to double conversion
with bit offset.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@55644 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* math.c (math_log1, math_log10): use common math constants
instead of math function calls.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@55641 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
returns positive infinity, in addition to lgamma_r(-0.0).
AIX returns an incorrect result of negative infinity.
* math.c (ruby_lgamma_r): handle +0.0, in addition to -0.0.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@54803 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* math.c (ruby_lgamma_r): missing/lgamma_r.c is used on Windows,
since msvcrt does not provide it.
* missing/lgamma_r.c (lgamma_r): fix lgamma(-0.0).
[ruby-core:74823] [Bug #12249]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@54496 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* math.c (math_gamma): make more robust against addition/removal.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@49972 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* math.c (mingw_tgamma): tgamma(3) on mingw returns a NaN for a
big number, not infinity.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@49913 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* math.c (num2dbl_with_to_f): make faster when Bignum passed by
direct conversion using rb_big2dbl(). [Feature #10800]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@49449 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* math.c (Get_Double): restrict direct casting only when
Fixnum#to_f is not redefined, and convert with rb_to_float().
[Feature #10785]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@49434 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* math.c (Get_Double): direct casting from Fixnum to double.
[Feature #10785]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@49433 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
