From 2a77a467b273c1a72fa204a8fcc6d22e6e20bb1c Mon Sep 17 00:00:00 2001
From: Joseph Myers <joseph@codesourcery.com>
Date: Fri, 29 Nov 2013 16:32:49 +0000
Subject: Fix exp10 errno setting on underflow (bug 6787).

---
 math/w_exp10.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'math/w_exp10.c')

diff --git a/math/w_exp10.c b/math/w_exp10.c
index 3db012d1f1..17823f57ef 100644
--- a/math/w_exp10.c
+++ b/math/w_exp10.c
@@ -28,7 +28,7 @@ double
 __exp10 (double x)
 {
   double z = __ieee754_exp10 (x);
-  if (__builtin_expect (!__finite (z), 0)
+  if (__builtin_expect (!__finite (z) || z == 0, 0)
       && __finite (x) && _LIB_VERSION != _IEEE_)
     /* exp10 overflow (46) if x > 0, underflow (47) if x < 0.  */
     return __kernel_standard (x, x, 46 + !!__signbit (x));
-- 
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