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hash.c: hoisted out dbl_to_index

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git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@66945 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
nobu 2019-01-30 04:54:01 +00:00
parent 15530088b6
commit a94b78e418
1 changed files with 10 additions and 9 deletions
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19
hash.c
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@ -147,6 +147,14 @@ rb_hash(VALUE obj)
long rb_objid_hash(st_index_t index);
static st_index_t
dbl_to_index(double d)
{
union {double d; st_index_t i;} u;
u.d = d;
return u.i;
}
long
rb_dbl_long_hash(double d)
{
@ -155,12 +163,7 @@ rb_dbl_long_hash(double d)
#if SIZEOF_INT == SIZEOF_VOIDP
return rb_memhash(&d, sizeof(d));
#else
{
union {double d; uint64_t i;} u;
u.d = d;
return rb_objid_hash(u.i);
}
return rb_objid_hash(dbl_to_index(d));
#endif
}
@ -293,9 +296,7 @@ rb_ident_hash(st_data_t n)
* many integers get interpreted as 2.0 or -2.0 [Bug #10761]
*/
if (FLONUM_P(n)) {
union { double d; st_data_t i; } u;
u.d = rb_float_value(n);
n ^= u.i;
n ^= dbl_to_index(rb_float_value(n));
}
#endif