From 70f5ad7c41ba777fee820bbd5852e5a357a7ff75 Mon Sep 17 00:00:00 2001
From: mrkn <mrkn@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Fri, 11 Nov 2016 14:38:59 +0000
Subject: [PATCH] rational.c: optimize rational + float.

* rational.c (rb_rational_plus): optimize rational + float.
  Author: Tadashi Saito <tad.a.digger@gmail.com>

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@56704 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 rational.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/rational.c b/rational.c
index ebc6979a97..3917541c13 100644
--- a/rational.c
+++ b/rational.c
@@ -715,6 +715,7 @@ f_addsub(VALUE self, VALUE anum, VALUE aden, VALUE bnum, VALUE bden, int k)
     return f_rational_new_no_reduce2(CLASS_OF(self), num, den);
 }
 
+static VALUE nurat_to_f(VALUE self);
 /*
  * call-seq:
  *    rat + numeric  ->  numeric
@@ -740,7 +741,7 @@ rb_rational_plus(VALUE self, VALUE other)
 	}
     }
     else if (RB_TYPE_P(other, T_FLOAT)) {
-	return f_add(f_to_f(self), other);
+	return DBL2NUM(RFLOAT_VALUE(nurat_to_f(self)) + RFLOAT_VALUE(other));
     }
     else if (RB_TYPE_P(other, T_RATIONAL)) {
 	{