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| author | Liubov Dmitrieva <liubov.dmitrieva@gmail.com> | 2012-09-25 20:41:17 +0200 |
|---|---|---|
| committer | Andreas Jaeger <aj@suse.de> | 2012-09-25 20:41:17 +0200 |
| commit | 6d3bf1993190edc502d01e8ca42c4482b20a5b6c (patch) | |
| tree | ceef4ffabe768f560a3a4d3f6b556b7b70aac37d /math/s_csin.c | |
| parent | 203e56032f77d0b36701deaee360e9cdda35d54e (diff) | |
| download | glibc-6d3bf1993190edc502d01e8ca42c4482b20a5b6c.zip glibc-6d3bf1993190edc502d01e8ca42c4482b20a5b6c.tar.gz glibc-6d3bf1993190edc502d01e8ca42c4482b20a5b6c.tar.bz2 | |
Fix wrong ussage of sincos for subnormal arguments
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 602c14e..725989c 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); |