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{Fixnum,Bignum}#** is unified into Integer.

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* numeric.c (rb_int_pow): {Fixnum,Bignum}#** is unified into
  Integer.

* bignum.c (rb_big_pow): Don't define Bignum#**.



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@54831 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
akr 2016-04-30 03:59:02 +00:00
parent d73b431e50
commit 8a2df1ce3f
3 changed files with 29 additions and 18 deletions
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26
numeric.c
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@ -3557,16 +3557,22 @@ fix_divmod(VALUE x, VALUE y)
}
/*
* Document-method: Fixnum#**
* Document-method: Integer#**
* call-seq:
* fix ** numeric -> numeric_result
* integer ** numeric -> numeric_result
*
* Raises +fix+ to the power of +numeric+, which may be negative or
* Raises +integer+ to the power of +numeric+, which may be negative or
* fractional.
* The result may be a Fixnum, Bignum, or Float
*
* 2 ** 3 #=> 8
* 2 ** -1 #=> (1/2)
* 2 ** 0.5 #=> 1.4142135623731
*
* 123456789 ** 2 #=> 15241578750190521
* 123456789 ** 1.2 #=> 5126464716.09932
* 123456789 ** -2 #=> 6.5610001194102e-17
*
*/
static VALUE
@ -3666,6 +3672,18 @@ fix_pow(VALUE x, VALUE y)
}
}
static VALUE
rb_int_pow(VALUE x, VALUE y)
{
if (FIXNUM_P(x)) {
return fix_pow(x, y);
}
else if (RB_TYPE_P(x, T_BIGNUM)) {
return rb_big_pow(x, y);
}
return Qnil;
}
/*
* Document-method: Fixnum#==
* call-seq:
@ -4799,7 +4817,7 @@ Init_Numeric(void)
rb_define_method(rb_cFixnum, "modulo", fix_mod, 1);
rb_define_method(rb_cFixnum, "divmod", fix_divmod, 1);
rb_define_method(rb_cFixnum, "fdiv", fix_fdiv, 1);
rb_define_method(rb_cFixnum, "**", fix_pow, 1);
rb_define_method(rb_cInteger, "**", rb_int_pow, 1);
rb_define_method(rb_cInteger, "abs", int_abs, 0);
rb_define_method(rb_cInteger, "magnitude", int_abs, 0);