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-rw-r--r--sysdeps/powerpc/power7/fpu/s_logb.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/sysdeps/powerpc/power7/fpu/s_logb.c b/sysdeps/powerpc/power7/fpu/s_logb.c
index c5feb67960..abd1c2ae3c 100644
--- a/sysdeps/powerpc/power7/fpu/s_logb.c
+++ b/sysdeps/powerpc/power7/fpu/s_logb.c
@@ -58,6 +58,7 @@ __logb (double x)
       int ma;
 
       EXTRACT_WORDS (ix, lx, x);
+      ix &= 0x7fffffff;
       if (ix == 0)
 	ma = __builtin_clz (lx) + 32;
       else