From 06010b2b05292e6557be75f609aa1295eeea68de Mon Sep 17 00:00:00 2001
From: nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Wed, 22 Feb 2017 23:28:26 +0000
Subject: rational.c: infinity in power

* rational.c (nurat_expt): return Infinity due to overflow.
  [ruby-core:79686] [Bug #13242]:

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@57688 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 rational.c | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'rational.c')

diff --git a/rational.c b/rational.c
index 13c44f7925..e779505fd0 100644
--- a/rational.c
+++ b/rational.c
@@ -1042,6 +1042,10 @@ nurat_expt(VALUE self, VALUE other)
 		num = ONE;
 		den = ONE;
 	    }
+	    if (RB_FLOAT_TYPE_P(num)) { /* infinity due to overflow */
+		if (RB_FLOAT_TYPE_P(den)) return DBL2NUM(NAN);
+		return num;
+	    }
 	    return f_rational_new2(CLASS_OF(self), num, den);
 	}
     }
-- 
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