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Fix Numeric#pow behavior.

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* Before

2 ** -1 #=> 0

 * After

2 ** -1 #=> 0.5
This commit is contained in:
Tatsuhiko Kubo
2014-08-25 17:17:37 +09:00
parent b01b3c4472
commit 0e9f98c430
1 changed files with 4 additions and 3 deletions
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src/numeric.c
+4 -3
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@@ -54,11 +54,12 @@ static mrb_value
num_pow(mrb_state *mrb, mrb_value x)
{
mrb_value y;
mrb_float d;
mrb_float d, yv;
mrb_get_args(mrb, "o", &y);
d = pow(mrb_to_flo(mrb, x), mrb_to_flo(mrb, y));
if (mrb_fixnum_p(x) && mrb_fixnum_p(y) && FIXABLE(d))
yv = mrb_to_flo(mrb, y);
d = pow(mrb_to_flo(mrb, x), yv);
if (mrb_fixnum_p(x) && mrb_fixnum_p(y) && FIXABLE(d) && yv > 0)
return mrb_fixnum_value((mrb_int)d);
return mrb_float_value(mrb, d);
}