diff options
Diffstat (limited to 'math/s_csin.c')
| -rw-r--r-- | math/s_csin.c | 20 |
1 files changed, 18 insertions, 2 deletions
diff --git a/math/s_csin.c b/math/s_csin.c index 602c14e537..725989c9c7 100644 --- a/math/s_csin.c +++ b/math/s_csin.c @@ -42,7 +42,15 @@ __csin (__complex__ double x) const int t = (int) ((DBL_MAX_EXP - 1) * M_LN2); double sinix, cosix; - __sincos (__real__ x, &sinix, &cosix); + if (__builtin_expect (rcls != FP_SUBNORMAL, 1)) + { + __sincos (__real__ x, &sinix, &cosix); + } + else + { + sinix = __real__ x; + cosix = 1.0; + } if (fabs (__imag__ x) > t) { @@ -115,7 +123,15 @@ __csin (__complex__ double x) /* Real part is finite. */ double sinix, cosix; - __sincos (__real__ x, &sinix, &cosix); + if (__builtin_expect (rcls != FP_SUBNORMAL, 1)) + { + __sincos (__real__ x, &sinix, &cosix); + } + else + { + sinix = __real__ x; + cosix = 1.0; + } __real__ retval = __copysign (HUGE_VAL, sinix); __imag__ retval = __copysign (HUGE_VAL, cosix); |