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math: Use accurate answers for cos and sincos.

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Use the most accurate hex literals possible for the answers to the
cos and sincos tests that vary according to the error in the rounding
of PI/2.

---

2013-04-24  Carlos O'Donell  <carlos@redhat.com>

	* math/libm-test.inc (cos_test): Use accurate hex constants.
	(sincost_test): Likewise.
This commit is contained in:
Carlos O'Donell
2013-04-24 16:29:33 -04:00
parent 5e22180060
commit 418601aa84
2 changed files with 15 additions and 10 deletions
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5
ChangeLog
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@@ -1,3 +1,8 @@
2013-04-24 Carlos O'Donell <carlos@redhat.com>
* math/libm-test.inc (cos_test): Use accurate hex constants.
(sincost_test): Likewise.
2013-04-24 Joseph Myers <joseph@codesourcery.com>
* math/libm-test.inc (catan_test): Add more tests.

20
math/libm-test.inc
View File

@@ -5413,23 +5413,23 @@ cos_test (void)
to each type. */
#ifdef TEST_FLOAT
/* 32-bit float. */
TEST_f_f (cos, M_PI_2l, -4.371139000186241438857289400265215e-8L);
TEST_f_f (cos, M_PI_2l, -0x1.777a5cp-25L);
#endif
#if defined TEST_DOUBLE || (defined TEST_LDOUBLE && LDBL_MANT_DIG == 53)
/* 64-bit double or 64-bit long double. */
TEST_f_f (cos, M_PI_2l, 6.123233995736765886130329661375001e-17L);
TEST_f_f (cos, M_PI_2l, 0x1.1a62633145c07p-54L);
#endif
#if defined TEST_LDOUBLE && LDBL_MANT_DIG == 64
/* 96-bit long double. */
TEST_f_f (cos, M_PI_2l, -2.50827880633416601177866354016537e-20L);
TEST_f_f (cos, M_PI_2l, -0xe.ce675d1fc8f8cbbp-69L);
#endif
#if defined TEST_LDOUBLE && LDBL_MANT_DIG == 106
/* 128-bit IBM long double. */
TEST_f_f (cos, M_PI_2l, 1.082856673921913968223746169860580e-32L);
TEST_f_f (cos, M_PI_2l, 0x1.c1cd129024e088a67cc74020bcp-107L);
#endif
#if defined TEST_LDOUBLE && LDBL_MANT_DIG == 113
/* 128-bit long double. */
TEST_f_f (cos, M_PI_2l, 4.335905065061890512398522013021675e-35L);
TEST_f_f (cos, M_PI_2l, 0x1.cd129024e088a67cc74020bbea64p-115L);
#endif
TEST_f_f (cos, 0.75L, 0.731688868873820886311838753000084544L);
@@ -12240,23 +12240,23 @@ sincos_test (void)
to each type. */
#ifdef TEST_FLOAT
/* 32-bit float. */
TEST_extra (sincos, M_PI_2l, 1, -4.371139000186241438857289400265215e-8L);
TEST_extra (sincos, M_PI_2l, 1, -0x1.777a5cp-25L);
#endif
#if defined TEST_DOUBLE || (defined TEST_LDOUBLE && LDBL_MANT_DIG == 53)
/* 64-bit double or 64-bit long double. */
TEST_extra (sincos, M_PI_2l, 1, 6.123233995736765886130329661375001e-17L);
TEST_extra (sincos, M_PI_2l, 1, 0x1.1a62633145c07p-54L);
#endif
#if defined TEST_LDOUBLE && LDBL_MANT_DIG == 64
/* 96-bit long double. */
TEST_extra (sincos, M_PI_2l, 1, -2.50827880633416601177866354016537e-20L);
TEST_extra (sincos, M_PI_2l, 1, -0xe.ce675d1fc8f8cbbp-69L);
#endif
#if defined TEST_LDOUBLE && LDBL_MANT_DIG == 106
/* 128-bit IBM long double. */
TEST_extra (sincos, M_PI_2l, 1, 1.082856673921913968223746169860580e-32L);
TEST_extra (sincos, M_PI_2l, 1, 0x1.c1cd129024e088a67cc74020bcp-107L);
#endif
#if defined TEST_LDOUBLE && LDBL_MANT_DIG == 113
/* 128-bit long double. */
TEST_extra (sincos, M_PI_2l, 1, 4.335905065061890512398522013021675e-35L);
TEST_extra (sincos, M_PI_2l, 1, 0x1.cd129024e088a67cc74020bbea64p-115L);
#endif
TEST_extra (sincos, M_PI_6l, 0.5, 0.86602540378443864676372317075293616L);