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Fix pow in non-default rounding modes (bug 3976).

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This commit is contained in:
Joseph Myers
2012-03-05 12:22:46 +00:00
parent ca811b2256
commit b7cd39e8f8
6 changed files with 246 additions and 8 deletions
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109
math/libm-test.inc
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@@ -5318,6 +5318,111 @@ pow_test (void)
END (pow);
}
static void
pow_test_tonearest (void)
{
int save_round_mode;
errno = 0;
FUNC(pow) (0, 0);
if (errno == ENOSYS)
/* Function not implemented. */
return;
START (pow_tonearest);
save_round_mode = fegetround ();
if (!fesetround (FE_TONEAREST))
{
TEST_ff_f (pow, 1.0625L, 1.125L, 1.070582293028761362162622578677070098674L);
TEST_ff_f (pow, 1.5L, 1.03125L, 1.519127098714743184071644334163037684948L);
}
fesetround (save_round_mode);
END (pow_tonearest);
}
static void
pow_test_towardzero (void)
{
int save_round_mode;
errno = 0;
FUNC(pow) (0, 0);
if (errno == ENOSYS)
/* Function not implemented. */
return;
START (pow_towardzero);
save_round_mode = fegetround ();
if (!fesetround (FE_TOWARDZERO))
{
TEST_ff_f (pow, 1.0625L, 1.125L, 1.070582293028761362162622578677070098674L);
TEST_ff_f (pow, 1.5L, 1.03125L, 1.519127098714743184071644334163037684948L);
}
fesetround (save_round_mode);
END (pow_towardzero);
}
static void
pow_test_downward (void)
{
int save_round_mode;
errno = 0;
FUNC(pow) (0, 0);
if (errno == ENOSYS)
/* Function not implemented. */
return;
START (pow_downward);
save_round_mode = fegetround ();
if (!fesetround (FE_DOWNWARD))
{
TEST_ff_f (pow, 1.0625L, 1.125L, 1.070582293028761362162622578677070098674L);
TEST_ff_f (pow, 1.5L, 1.03125L, 1.519127098714743184071644334163037684948L);
}
fesetround (save_round_mode);
END (pow_downward);
}
static void
pow_test_upward (void)
{
int save_round_mode;
errno = 0;
FUNC(pow) (0, 0);
if (errno == ENOSYS)
/* Function not implemented. */
return;
START (pow_upward);
save_round_mode = fegetround ();
if (!fesetround (FE_UPWARD))
{
TEST_ff_f (pow, 1.0625L, 1.125L, 1.070582293028761362162622578677070098674L);
TEST_ff_f (pow, 1.5L, 1.03125L, 1.519127098714743184071644334163037684948L);
}
fesetround (save_round_mode);
END (pow_upward);
}
static void
remainder_test (void)
{
@@ -7218,6 +7323,10 @@ main (int argc, char **argv)
fabs_test ();
hypot_test ();
pow_test ();
pow_test_tonearest ();
pow_test_towardzero ();
pow_test_downward ();
pow_test_upward ();
sqrt_test ();
/* Error and gamma functions: */