diff options
Diffstat (limited to 'libc/math/s_csinf.c')
| -rw-r--r-- | libc/math/s_csinf.c | 20 |
1 files changed, 18 insertions, 2 deletions
diff --git a/libc/math/s_csinf.c b/libc/math/s_csinf.c index c1d6a4f28..d53f943fa 100644 --- a/libc/math/s_csinf.c +++ b/libc/math/s_csinf.c @@ -42,7 +42,15 @@ __csinf (__complex__ float x) const int t = (int) ((FLT_MAX_EXP - 1) * M_LN2); float sinix, cosix; - __sincosf (__real__ x, &sinix, &cosix); + if (__builtin_expect (rcls != FP_SUBNORMAL, 1)) + { + __sincosf (__real__ x, &sinix, &cosix); + } + else + { + sinix = __real__ x; + cosix = 1.0f; + } if (fabsf (__imag__ x) > t) { @@ -115,7 +123,15 @@ __csinf (__complex__ float x) /* Real part is finite. */ float sinix, cosix; - __sincosf (__real__ x, &sinix, &cosix); + if (__builtin_expect (rcls != FP_SUBNORMAL, 1)) + { + __sincosf (__real__ x, &sinix, &cosix); + } + else + { + sinix = __real__ x; + cosix = 1.0f; + } __real__ retval = __copysignf (HUGE_VALF, sinix); __imag__ retval = __copysignf (HUGE_VALF, cosix); |