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-rw-r--r--math/w_exp2f.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/math/w_exp2f.c b/math/w_exp2f.c
index 7c277ef390..8430fd5702 100644
--- a/math/w_exp2f.c
+++ b/math/w_exp2f.c
@@ -9,7 +9,7 @@ float
 __exp2f (float x)
 {
   float z = __ieee754_exp2f (x);
-  if (__builtin_expect (!__finitef (z), 0)
+  if (__builtin_expect (!__finitef (z) || z == 0, 0)
       && __finitef (x) && _LIB_VERSION != _IEEE_)
     /* exp2 overflow: 144, exp2 underflow: 145 */
     return __kernel_standard_f (x, x, 144 + !!__signbitf (x));