diff options
| -rw-r--r-- | ChangeLog | 5 | ||||
| -rw-r--r-- | math/libm-test.inc | 20 | ||||
| -rw-r--r-- | sysdeps/ieee754/k_standard.c | 4 |
3 files changed, 24 insertions, 5 deletions
@@ -1,5 +1,10 @@ 2009-04-25 Ulrich Drepper <drepper@redhat.com> + * sysdeps/ieee754/k_standard.c (__kernel_standard): Use correct + errno value vor pow(+-0,neg). + * math/libm-test.inc (pow_test): Add tests for errno value for + pole errors. + * math/w_fmod.c: Also handle x=±Inf as error. * math/w_fmodf.c: Likewise. * math/w_fmodl.c: Likewise. diff --git a/math/libm-test.inc b/math/libm-test.inc index bed59e8b72..19025ecebe 100644 --- a/math/libm-test.inc +++ b/math/libm-test.inc @@ -4742,15 +4742,31 @@ pow_test (void) TEST_ff_f (pow, -10.1L, 1.1L, nan_value, INVALID_EXCEPTION); TEST_ff_f (pow, -10.1L, -1.1L, nan_value, INVALID_EXCEPTION); + errno = 0; TEST_ff_f (pow, 0, -1, plus_infty, DIVIDE_BY_ZERO_EXCEPTION); + check_int ("errno for pow(0,-odd) == ERANGE", errno, ERANGE, 0, 0, 0); + errno = 0; TEST_ff_f (pow, 0, -11, plus_infty, DIVIDE_BY_ZERO_EXCEPTION); + check_int ("errno for pow(0,-odd) == ERANGE", errno, ERANGE, 0, 0, 0); + errno = 0; TEST_ff_f (pow, minus_zero, -1, minus_infty, DIVIDE_BY_ZERO_EXCEPTION); - TEST_ff_f (pow, minus_zero, -11, minus_infty, DIVIDE_BY_ZERO_EXCEPTION); + check_int ("errno for pow(-0,-odd) == ERANGE", errno, ERANGE, 0, 0, 0); + errno = 0; + TEST_ff_f (pow, minus_zero, -11L, minus_infty, DIVIDE_BY_ZERO_EXCEPTION); + check_int ("errno for pow(-0,-odd) == ERANGE", errno, ERANGE, 0, 0, 0); + errno = 0; TEST_ff_f (pow, 0, -2, plus_infty, DIVIDE_BY_ZERO_EXCEPTION); + check_int ("errno for pow(0,-even) == ERANGE", errno, ERANGE, 0, 0, 0); + errno = 0; TEST_ff_f (pow, 0, -11.1L, plus_infty, DIVIDE_BY_ZERO_EXCEPTION); + check_int ("errno for pow(0,-num) == ERANGE", errno, ERANGE, 0, 0, 0); + errno = 0; TEST_ff_f (pow, minus_zero, -2, plus_infty, DIVIDE_BY_ZERO_EXCEPTION); + check_int ("errno for pow(-0,-even) == ERANGE", errno, ERANGE, 0, 0, 0); + errno = 0; TEST_ff_f (pow, minus_zero, -11.1L, plus_infty, DIVIDE_BY_ZERO_EXCEPTION); + check_int ("errno for pow(-0,-num) == ERANGE", errno, ERANGE, 0, 0, 0); TEST_ff_f (pow, 0x1p72L, 0x1p72L, plus_infty); TEST_ff_f (pow, 10, -0x1p72L, 0); @@ -4763,11 +4779,9 @@ pow_test (void) TEST_ff_f (pow, minus_zero, 1, minus_zero); TEST_ff_f (pow, minus_zero, 11, minus_zero); - TEST_ff_f (pow, 0, 2, 0); TEST_ff_f (pow, 0, 11.1L, 0); - TEST_ff_f (pow, minus_zero, 2, 0); TEST_ff_f (pow, minus_zero, 11.1L, 0); TEST_ff_f (pow, 0, plus_infty, 0); diff --git a/sysdeps/ieee754/k_standard.c b/sysdeps/ieee754/k_standard.c index a81da13b8c..c13d11fe4e 100644 --- a/sysdeps/ieee754/k_standard.c +++ b/sysdeps/ieee754/k_standard.c @@ -528,7 +528,7 @@ static double zero = 0.0; /* used as const */ else exc.retval = -HUGE_VAL; if (_LIB_VERSION == _POSIX_) - __set_errno (EDOM); + __set_errno (ERANGE); else if (!matherr(&exc)) { if (_LIB_VERSION == _SVID_) { (void) WRITE2("pow(0,neg): DOMAIN error\n", 25); @@ -547,7 +547,7 @@ static double zero = 0.0; /* used as const */ else exc.retval = HUGE_VAL; if (_LIB_VERSION == _POSIX_) - __set_errno (EDOM); + __set_errno (ERANGE); else if (!matherr(&exc)) { if (_LIB_VERSION == _SVID_) { (void) WRITE2("pow(0,neg): DOMAIN error\n", 25); |