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-rw-r--r--math/s_csinf.c13
1 files changed, 13 insertions, 0 deletions
diff --git a/math/s_csinf.c b/math/s_csinf.c
index 92b858ae6a..a3dcf9d3aa 100644
--- a/math/s_csinf.c
+++ b/math/s_csinf.c
@@ -88,6 +88,19 @@ __csinf (__complex__ float x)
if (negate)
__real__ retval = -__real__ retval;
+
+ if (fabsf (__real__ retval) < FLT_MIN)
+ {
+ volatile float force_underflow
+ = __real__ retval * __real__ retval;
+ (void) force_underflow;
+ }
+ if (fabsf (__imag__ retval) < FLT_MIN)
+ {
+ volatile float force_underflow
+ = __imag__ retval * __imag__ retval;
+ (void) force_underflow;
+ }
}
else
{