Introduce table improvement by Vladimir Makarov <vmakarov@redhat.com>.

	[Feature #12142]
	See header of st.c for improvment details.

	You can see all of code history here:
	<https://github.com/vnmakarov/ruby/tree/hash_tables_with_open_addressing>

	This improvement is discussed at
	<https://bugs.ruby-lang.org/issues/12142>
	with many people, especially with Yura Sokolov.

	* st.c: improve st_table.

	* include/ruby/st.h: ditto.

	* internal.h, numeric.c, hash.c (rb_dbl_long_hash): extract a function.

	* ext/-test-/st/foreach/foreach.c: catch up this change.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@56650 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 1 insertions, 6 deletions

diff --git a/numeric.c b/numeric.c
index 3620f1f3b8..6ab3593cfc 100644
--- a/numeric.c
+++ b/numeric.c
@@ -1421,12 +1421,7 @@ flo_hash(VALUE num)
 VALUE
 rb_dbl_hash(double d)
 {
-    st_index_t hash;
-
-    /* normalize -0.0 to 0.0 */
-    if (d == 0.0) d = 0.0;
-    hash = rb_memhash(&d, sizeof(d));
-    return ST2FIX(hash);
+    return LONG2FIX(rb_dbl_long_hash (d));
 }
 
 VALUE