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| author | Carlos O'Donell <carlos@redhat.com> | 2013-04-24 16:29:33 -0400 |
|---|---|---|
| committer | Carlos O'Donell <carlos@redhat.com> | 2013-04-24 16:29:33 -0400 |
| commit | 418601aa84a2b5cfa21f27bcb81b5c1d0fdf9ccd (patch) | |
| tree | dfe82ae34f369ea143ccc182636f6fcf6b69f934 | |
| parent | 5e2218006061c9225ab6e761dad849b4baab632e (diff) | |
| download | glibc-418601aa84a2b5cfa21f27bcb81b5c1d0fdf9ccd.zip glibc-418601aa84a2b5cfa21f27bcb81b5c1d0fdf9ccd.tar.gz glibc-418601aa84a2b5cfa21f27bcb81b5c1d0fdf9ccd.tar.bz2 | |
math: Use accurate answers for cos and sincos.
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.
| -rw-r--r-- | ChangeLog | 5 | ||||
| -rw-r--r-- | math/libm-test.inc | 20 |
2 files changed, 15 insertions, 10 deletions
@@ -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. diff --git a/math/libm-test.inc b/math/libm-test.inc index 00edede..eb9fa71 100644 --- a/math/libm-test.inc +++ b/math/libm-test.inc @@ -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); |