array.c: Improve performance of Array#sort with float elements

* array.c (sort_2): improve performance of Array#sort with float elements.

* internal.h (cmp_opt_Float, cmp_opt_data): added for checking whether or not
  Float#<=> can be optimizable.

* numeric.c (rb_float_cmp): added for internal use.

* internal.h (rb_float_cmp): ditto.

[Bug #13340]
[ruby-dev:50023]
[Fix GH-1539]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@58333 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 6 insertions, 0 deletions

diff --git a/numeric.c b/numeric.c
index f8f0766940..f66fdaef54 100644
--- a/numeric.c
+++ b/numeric.c
@@ -1520,6 +1520,12 @@ flo_cmp(VALUE x, VALUE y)
     return rb_dbl_cmp(a, b);
 }
 
+int
+rb_float_cmp(VALUE x, VALUE y)
+{
+    return NUM2INT(flo_cmp(x, y));
+}
+
 /*
  * call-seq:
  *   float > real  ->  true or false