From 354691b7b55d014b9a4d3a94e2f8f934870b6bff Mon Sep 17 00:00:00 2001
From: Marek Polacek <polacek@redhat.com>
Date: Wed, 25 Jul 2012 12:59:36 +0200
Subject: Set up errno properly for yn.

---
 sysdeps/ieee754/dbl-64/e_jn.c | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'sysdeps/ieee754/dbl-64/e_jn.c')

diff --git a/sysdeps/ieee754/dbl-64/e_jn.c b/sysdeps/ieee754/dbl-64/e_jn.c
index 63788c5..0d2a24c 100644
--- a/sysdeps/ieee754/dbl-64/e_jn.c
+++ b/sysdeps/ieee754/dbl-64/e_jn.c
@@ -36,6 +36,7 @@
  *
  */
 
+#include <errno.h>
 #include <math.h>
 #include <math_private.h>
 
@@ -276,6 +277,9 @@ __ieee754_yn(int n, double x)
 		GET_HIGH_WORD(high,b);
 		a = temp;
 	    }
+	    /* If B is +-Inf, set up errno accordingly.  */
+	    if (! __finite (b))
+	      __set_errno (ERANGE);
 	}
 	if(sign>0) return b; else return -b;
 }
-- 
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