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| author | Ulrich Drepper <drepper@redhat.com> | 2009-04-26 03:43:02 +0000 |
|---|---|---|
| committer | Ulrich Drepper <drepper@redhat.com> | 2009-04-26 03:43:02 +0000 |
| commit | 7095366d1efc6e58639f7c76d0b515212d61247d (patch) | |
| tree | 57288207af8eee5b1a67fa7eeb3dbdc8cf9fcec5 /math | |
| parent | 0c59a1963e948c546e0d3e34de974c7e71de1134 (diff) | |
| download | glibc-7095366d1efc6e58639f7c76d0b515212d61247d.tar.gz glibc-7095366d1efc6e58639f7c76d0b515212d61247d.tar.xz glibc-7095366d1efc6e58639f7c76d0b515212d61247d.zip | |
* math/w_fmod.c: Also handle x=±Inf as error.
* math/w_fmodf.c: Likewise. * math/w_fmodl.c: Likewise. * math/libm-test.inc (fmod_test): Add tests for errno after calls for x=±Inf or y=0.
Diffstat (limited to 'math')
| -rw-r--r-- | math/libm-test.inc | 6 | ||||
| -rw-r--r-- | math/w_fmod.c | 5 | ||||
| -rw-r--r-- | math/w_fmodf.c | 8 | ||||
| -rw-r--r-- | math/w_fmodl.c | 5 |
4 files changed, 16 insertions, 8 deletions
diff --git a/math/libm-test.inc b/math/libm-test.inc index 5f4dbe7fa1..bed59e8b72 100644 --- a/math/libm-test.inc +++ b/math/libm-test.inc @@ -2883,11 +2883,17 @@ fmod_test (void) TEST_ff_f (fmod, minus_zero, 3, minus_zero); /* fmod (+inf, y) == NaN plus invalid exception. */ + errno = 0; TEST_ff_f (fmod, plus_infty, 3, nan_value, INVALID_EXCEPTION); + check_int ("errno for fmod(Inf,3) unchanged", errno, EDOM, 0, 0, 0); /* fmod (-inf, y) == NaN plus invalid exception. */ + errno = 0; TEST_ff_f (fmod, minus_infty, 3, nan_value, INVALID_EXCEPTION); + check_int ("errno for fmod(-Inf,3) unchanged", errno, EDOM, 0, 0, 0); /* fmod (x, +0) == NaN plus invalid exception. */ + errno = 0; TEST_ff_f (fmod, 3, 0, nan_value, INVALID_EXCEPTION); + check_int ("errno for fmod(3,0) unchanged", errno, EDOM, 0, 0, 0); /* fmod (x, -0) == NaN plus invalid exception. */ TEST_ff_f (fmod, 3, minus_zero, nan_value, INVALID_EXCEPTION); diff --git a/math/w_fmod.c b/math/w_fmod.c index 43a1d8ef5c..ca01cf2ac5 100644 --- a/math/w_fmod.c +++ b/math/w_fmod.c @@ -35,8 +35,9 @@ static char rcsid[] = "$NetBSD: w_fmod.c,v 1.6 1995/05/10 20:48:55 jtc Exp $"; double z; z = __ieee754_fmod(x,y); if(_LIB_VERSION == _IEEE_ ||__isnan(y)||__isnan(x)) return z; - if(y==0.0) { - return __kernel_standard(x,y,27); /* fmod(x,0) */ + if(__isinf(x)||y==0.0) { + /* fmod(+-Inf,y) or fmod(x,0) */ + return __kernel_standard(x,y,27); } else return z; #endif diff --git a/math/w_fmodf.c b/math/w_fmodf.c index 2bd133f2d7..e2e869a3cc 100644 --- a/math/w_fmodf.c +++ b/math/w_fmodf.c @@ -8,7 +8,7 @@ * * Developed at SunPro, a Sun Microsystems, Inc. business. * Permission to use, copy, modify, and distribute this - * software is freely granted, provided that this notice + * software is freely granted, provided that this notice * is preserved. * ==================================================== */ @@ -17,7 +17,7 @@ static char rcsid[] = "$NetBSD: w_fmodf.c,v 1.3 1995/05/10 20:48:57 jtc Exp $"; #endif -/* +/* * wrapper fmodf(x,y) */ @@ -38,8 +38,8 @@ static char rcsid[] = "$NetBSD: w_fmodf.c,v 1.3 1995/05/10 20:48:57 jtc Exp $"; float z; z = __ieee754_fmodf(x,y); if(_LIB_VERSION == _IEEE_ ||__isnanf(y)||__isnanf(x)) return z; - if(y==(float)0.0) { - /* fmodf(x,0) */ + if(__isinff(x)||y==(float)0.0) { + /* fmodf(+-Inf,y) or fmodf(x,0) */ return (float)__kernel_standard((double)x,(double)y,127); } else return z; diff --git a/math/w_fmodl.c b/math/w_fmodl.c index 7b9a297cfd..c39b2852f6 100644 --- a/math/w_fmodl.c +++ b/math/w_fmodl.c @@ -39,8 +39,9 @@ static char rcsid[] = "$NetBSD: $"; long double z; z = __ieee754_fmodl(x,y); if(_LIB_VERSION == _IEEE_ ||__isnanl(y)||__isnanl(x)) return z; - if(y==0.0) { - return __kernel_standard(x,y,227); /* fmod(x,0) */ + if(__isinfl(x)||y==0.0) { + /* fmodl(+-Inf,y) or fmodl(x,0) */ + return __kernel_standard(x,y,227); } else return z; #endif |