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authorJoseph Myers <joseph@codesourcery.com>2013-04-03 16:51:46 +0000
committerJoseph Myers <joseph@codesourcery.com>2013-04-03 16:51:46 +0000
commit05e166c887612250d461b5fe7c0f0064cd1a0c41 (patch)
tree9cb5d95b1af53bfc90b7bf1bf0a6772336df00d3 /math/s_cexp.c
parent5b535ac41945fa369a5f641acdeb0d7eadf4668e (diff)
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Fix missing underflow from cexp (bug 14478).
Diffstat (limited to 'math/s_cexp.c')
-rw-r--r--math/s_cexp.c12
1 files changed, 12 insertions, 0 deletions
diff --git a/math/s_cexp.c b/math/s_cexp.c
index 36157ff61b..655e4e8dee 100644
--- a/math/s_cexp.c
+++ b/math/s_cexp.c
@@ -74,6 +74,18 @@ __cexp (__complex__ double x)
 	      __real__ retval = exp_val * cosix;
 	      __imag__ retval = exp_val * sinix;
 	    }
+	  if (fabs (__real__ retval) < DBL_MIN)
+	    {
+	      volatile double force_underflow
+		= __real__ retval * __real__ retval;
+	      (void) force_underflow;
+	    }
+	  if (fabs (__imag__ retval) < DBL_MIN)
+	    {
+	      volatile double force_underflow
+		= __imag__ retval * __imag__ retval;
+	      (void) force_underflow;
+	    }
 	}
       else
 	{