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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.tar.gz glibc-418601aa84a2b5cfa21f27bcb81b5c1d0fdf9ccd.tar.xz glibc-418601aa84a2b5cfa21f27bcb81b5c1d0fdf9ccd.zip | |
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
diff --git a/ChangeLog b/ChangeLog index f3efba4002..e6a9a40d52 100644 --- a/ChangeLog +++ b/ChangeLog @@ -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 00edede316..eb9fa710cd 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); |