Improve performance Float#positive? and Float#negative? [Feature #17614] (#4160)

benchmark/float_neg_posi.yml

@@ -0,0 +1,8 @@
+prelude: |
+  flo = 4.2
+benchmark:
+  negative?: |
+    flo.negative?
+  positive?: |
+    flo.positive?
+loop_count: 20000000

numeric.c

@@ -2384,34 +2384,6 @@ flo_truncate(int argc, VALUE *argv, VALUE num)
 	return flo_floor(argc, argv, num);
 }
 
-/*
- *  call-seq:
- *     float.positive?  ->  true or false
- *
- *  Returns +true+ if +float+ is greater than 0.
- */
-
-static VALUE
-flo_positive_p(VALUE num)
-{
-    double f = RFLOAT_VALUE(num);
-    return f > 0.0 ? Qtrue : Qfalse;
-}
-
-/*
- *  call-seq:
- *     float.negative?  ->  true or false
- *
- *  Returns +true+ if +float+ is less than 0.
- */
-
-static VALUE
-flo_negative_p(VALUE num)
-{
-    double f = RFLOAT_VALUE(num);
-    return f < 0.0 ? Qtrue : Qfalse;
-}
-
 /*
  *  call-seq:
  *     num.floor([ndigits])  ->  integer or float
@@ -5654,8 +5626,6 @@ Init_Numeric(void)
     rb_define_method(rb_cFloat, "finite?",   rb_flo_is_finite_p, 0);
     rb_define_method(rb_cFloat, "next_float", flo_next_float, 0);
     rb_define_method(rb_cFloat, "prev_float", flo_prev_float, 0);
-    rb_define_method(rb_cFloat, "positive?", flo_positive_p, 0);
-    rb_define_method(rb_cFloat, "negative?", flo_negative_p, 0);
 }
 
 #undef rb_float_value

numeric.rb

@@ -204,4 +204,26 @@ class Float
     Primitive.attr! 'inline'
     Primitive.cexpr! 'FLOAT_ZERO_P(self) ? Qtrue : Qfalse'
   end
+
+  #
+  #  call-seq:
+  #     float.positive?  ->  true or false
+  #
+  #  Returns +true+ if +float+ is greater than 0.
+  #
+  def positive?
+    Primitive.attr! 'inline'
+    Primitive.cexpr! 'RFLOAT_VALUE(self) > 0.0 ? Qtrue : Qfalse'
+  end
+
+  #
+  #  call-seq:
+  #     float.negative?  ->  true or false
+  #
+  #  Returns +true+ if +float+ is less than 0.
+  #
+  def negative?
+    Primitive.attr! 'inline'
+    Primitive.cexpr! 'RFLOAT_VALUE(self) < 0.0 ? Qtrue : Qfalse'
+  end
 end