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-rw-r--r--math/s_cacosf.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/math/s_cacosf.c b/math/s_cacosf.c
index 9eaeeec..1c9d8b9 100644
--- a/math/s_cacosf.c
+++ b/math/s_cacosf.c
@@ -34,6 +34,8 @@ __cacosf (__complex__ float x)
y = __casinf (x);
__real__ res = (float) M_PI_2 - __real__ y;
+ if (__real__ res == 0.0f)
+ __real__ res = 0.0f;
__imag__ res = -__imag__ y;
}
else