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* 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.
This commit is contained in:
Ulrich Drepper 2009-04-26 04:46:54 +00:00
parent 7095366d1e
commit 002a604fd6
3 changed files with 24 additions and 5 deletions
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5
ChangeLog
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@ -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.

20
math/libm-test.inc
View File

@ -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);

4
sysdeps/ieee754/k_standard.c
View File

@ -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);