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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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7
ChangeLog
View File

@ -1,3 +1,10 @@
Sat Apr 30 12:25:43 2016 Tanaka Akira <akr@fsij.org>
* numeric.c (rb_int_pow): {Fixnum,Bignum}#** is unified into
Integer.
* bignum.c (rb_big_pow): Don't define Bignum#**.
Sat Apr 30 12:28:59 2016 Tanaka Akira <akr@fsij.org>
* bignum.c (rb_big_comp): Renamed from rb_big_neg.

14
bignum.c
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@ -6296,19 +6296,6 @@ rb_big_fdiv(VALUE x, VALUE y)
return DBL2NUM(dx / dy);
}
/*
* call-seq:
* big ** exponent -> numeric
*
* Raises _big_ to the _exponent_ power (which may be an integer, float,
* or anything that will coerce to a number). The result may be
* a Fixnum, Bignum, or Float
*
* 123456789 ** 2 #=> 15241578750190521
* 123456789 ** 1.2 #=> 5126464716.09932
* 123456789 ** -2 #=> 6.5610001194102e-17
*/
VALUE
rb_big_pow(VALUE x, VALUE y)
{
@ -6950,7 +6937,6 @@ Init_Bignum(void)
rb_define_method(rb_cBignum, "modulo", rb_big_modulo, 1);
rb_define_method(rb_cBignum, "remainder", rb_big_remainder, 1);
rb_define_method(rb_cBignum, "fdiv", rb_big_fdiv, 1);
rb_define_method(rb_cBignum, "**", rb_big_pow, 1);
rb_define_method(rb_cBignum, "==", rb_big_eq, 1);
rb_define_method(rb_cBignum, ">", big_gt, 1);

26
numeric.c
View File

@ -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);