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Fix acos (-1) in round-downwards mode on x86 (bug 14034).

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This commit is contained in:
Joseph Myers
2012-04-30 09:38:06 +00:00
parent 9568c0c225
commit 5ba3cc691c
8 changed files with 618 additions and 1 deletions
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248
math/libm-test.inc
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@@ -761,6 +761,126 @@ acos_test (void)
END (acos);
}
static void
acos_test_tonearest (void)
{
int save_round_mode;
errno = 0;
FUNC(acos) (0);
if (errno == ENOSYS)
/* Function not implemented. */
return;
START (acos_tonearest);
save_round_mode = fegetround ();
if (!fesetround (FE_TONEAREST))
{
TEST_f_f (acos, 0, M_PI_2l);
TEST_f_f (acos, minus_zero, M_PI_2l);
TEST_f_f (acos, 1, 0);
TEST_f_f (acos, -1, M_PIl);
TEST_f_f (acos, 0.5, M_PI_6l*2.0);
TEST_f_f (acos, -0.5, M_PI_6l*4.0);
}
fesetround (save_round_mode);
END (acos_tonearest);
}
static void
acos_test_towardzero (void)
{
int save_round_mode;
errno = 0;
FUNC(acos) (0);
if (errno == ENOSYS)
/* Function not implemented. */
return;
START (acos_towardzero);
save_round_mode = fegetround ();
if (!fesetround (FE_TOWARDZERO))
{
TEST_f_f (acos, 0, M_PI_2l);
TEST_f_f (acos, minus_zero, M_PI_2l);
TEST_f_f (acos, 1, 0);
TEST_f_f (acos, -1, M_PIl);
TEST_f_f (acos, 0.5, M_PI_6l*2.0);
TEST_f_f (acos, -0.5, M_PI_6l*4.0);
}
fesetround (save_round_mode);
END (acos_towardzero);
}
static void
acos_test_downward (void)
{
int save_round_mode;
errno = 0;
FUNC(acos) (0);
if (errno == ENOSYS)
/* Function not implemented. */
return;
START (acos_downward);
save_round_mode = fegetround ();
if (!fesetround (FE_DOWNWARD))
{
TEST_f_f (acos, 0, M_PI_2l);
TEST_f_f (acos, minus_zero, M_PI_2l);
TEST_f_f (acos, 1, 0);
TEST_f_f (acos, -1, M_PIl);
TEST_f_f (acos, 0.5, M_PI_6l*2.0);
TEST_f_f (acos, -0.5, M_PI_6l*4.0);
}
fesetround (save_round_mode);
END (acos_downward);
}
static void
acos_test_upward (void)
{
int save_round_mode;
errno = 0;
FUNC(acos) (0);
if (errno == ENOSYS)
/* Function not implemented. */
return;
START (acos_upward);
save_round_mode = fegetround ();
if (!fesetround (FE_UPWARD))
{
TEST_f_f (acos, 0, M_PI_2l);
TEST_f_f (acos, minus_zero, M_PI_2l);
TEST_f_f (acos, 1, 0);
TEST_f_f (acos, -1, M_PIl);
TEST_f_f (acos, 0.5, M_PI_6l*2.0);
TEST_f_f (acos, -0.5, M_PI_6l*4.0);
}
fesetround (save_round_mode);
END (acos_upward);
}
static void
acosh_test (void)
{
@@ -817,6 +937,126 @@ asin_test (void)
END (asin);
}
static void
asin_test_tonearest (void)
{
int save_round_mode;
errno = 0;
FUNC(asin) (0);
if (errno == ENOSYS)
/* Function not implemented. */
return;
START (asin_tonearest);
save_round_mode = fegetround ();
if (!fesetround (FE_TONEAREST))
{
TEST_f_f (asin, 0, 0);
TEST_f_f (asin, minus_zero, minus_zero);
TEST_f_f (asin, 0.5, M_PI_6l);
TEST_f_f (asin, -0.5, -M_PI_6l);
TEST_f_f (asin, 1.0, M_PI_2l);
TEST_f_f (asin, -1.0, -M_PI_2l);
}
fesetround (save_round_mode);
END (asin_tonearest);
}
static void
asin_test_towardzero (void)
{
int save_round_mode;
errno = 0;
FUNC(asin) (0);
if (errno == ENOSYS)
/* Function not implemented. */
return;
START (asin_towardzero);
save_round_mode = fegetround ();
if (!fesetround (FE_TOWARDZERO))
{
TEST_f_f (asin, 0, 0);
TEST_f_f (asin, minus_zero, minus_zero);
TEST_f_f (asin, 0.5, M_PI_6l);
TEST_f_f (asin, -0.5, -M_PI_6l);
TEST_f_f (asin, 1.0, M_PI_2l);
TEST_f_f (asin, -1.0, -M_PI_2l);
}
fesetround (save_round_mode);
END (asin_towardzero);
}
static void
asin_test_downward (void)
{
int save_round_mode;
errno = 0;
FUNC(asin) (0);
if (errno == ENOSYS)
/* Function not implemented. */
return;
START (asin_downward);
save_round_mode = fegetround ();
if (!fesetround (FE_DOWNWARD))
{
TEST_f_f (asin, 0, 0);
TEST_f_f (asin, minus_zero, minus_zero);
TEST_f_f (asin, 0.5, M_PI_6l);
TEST_f_f (asin, -0.5, -M_PI_6l);
TEST_f_f (asin, 1.0, M_PI_2l);
TEST_f_f (asin, -1.0, -M_PI_2l);
}
fesetround (save_round_mode);
END (asin_downward);
}
static void
asin_test_upward (void)
{
int save_round_mode;
errno = 0;
FUNC(asin) (0);
if (errno == ENOSYS)
/* Function not implemented. */
return;
START (asin_upward);
save_round_mode = fegetround ();
if (!fesetround (FE_UPWARD))
{
TEST_f_f (asin, 0, 0);
TEST_f_f (asin, minus_zero, minus_zero);
TEST_f_f (asin, 0.5, M_PI_6l);
TEST_f_f (asin, -0.5, -M_PI_6l);
TEST_f_f (asin, 1.0, M_PI_2l);
TEST_f_f (asin, -1.0, -M_PI_2l);
}
fesetround (save_round_mode);
END (asin_upward);
}
static void
asinh_test (void)
{
@@ -8194,7 +8434,15 @@ main (int argc, char **argv)
/* Trigonometric functions: */
acos_test ();
acos_test_tonearest ();
acos_test_towardzero ();
acos_test_downward ();
acos_test_upward ();
asin_test ();
asin_test_tonearest ();
asin_test_towardzero ();
asin_test_downward ();
asin_test_upward ();
atan_test ();
atan2_test ();
cos_test ();