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complex.c: small optimization of Complex#**

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* complex.c (rb_complex_pow): calculate power of a Fixnum without
  allocating intermediate Complex objects, and avoid unexpected
  NaNs.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@65190 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
nobu 2018-10-20 02:49:18 +00:00
parent c561284bc2
commit b4bbfe4bb9
5 changed files with 79 additions and 44 deletions
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16
numeric.c
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@ -4077,6 +4077,22 @@ rb_int_pow(VALUE x, VALUE y)
return Qnil;
}
VALUE
rb_num_pow(VALUE x, VALUE y)
{
VALUE z = rb_int_pow(x, y);
if (!NIL_P(z)) return z;
if (RB_FLOAT_TYPE_P(x)) return rb_float_pow(x, y);
if (SPECIAL_CONST_P(x)) return Qnil;
switch (BUILTIN_TYPE(x)) {
case T_COMPLEX:
return rb_complex_pow(x, y);
case T_RATIONAL:
return rb_rational_pow(x, y);
}
return Qnil;
}
/*
* Document-method: Integer#==
* Document-method: Integer#===