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merge revision(s) 49999,50000: [Backport #10979]

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* hash.c (rb_any_hash): use same hash values with Float#hash so
	  that -0.0 and +0.0 will be identical.
	  [ruby-core:68541] [Bug #10979]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_2@50619 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
nagachika 2015-05-23 17:01:17 +00:00
parent c5a6913232
commit c758d63138
6 changed files with 28 additions and 6 deletions
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8
numeric.c
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@ -1137,10 +1137,14 @@ flo_eq(VALUE x, VALUE y)
static VALUE
flo_hash(VALUE num)
{
double d;
return rb_dbl_hash(RFLOAT_VALUE(num));
}
VALUE
rb_dbl_hash(double d)
{
st_index_t hash;
d = RFLOAT_VALUE(num);
/* normalize -0.0 to 0.0 */
if (d == 0.0) d = 0.0;
hash = rb_memhash(&d, sizeof(d));