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Fix missing underflow from cexp (bug 14478).

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This commit is contained in:
Joseph Myers
2013-04-03 16:51:46 +00:00
parent 5b535ac419
commit 05e166c887
6 changed files with 52 additions and 4 deletions
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12
math/s_cexp.c
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@@ -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
{