Correct implementation of fmaf.
This commit is contained in:
parent
c579b20299
commit
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25
ChangeLog
25
ChangeLog
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@ -1,3 +1,28 @@
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2010-10-07 Jakub Jelinek <jakub@redhat.com>
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[BZ #3268]
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* math/libm-test.inc (fma_test): Add 2 fmaf tests.
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* sysdeps/ieee754/dbl-64/s_fmaf.c: New file.
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* sysdeps/i386/i686/multiarch/s_fmaf.c: Include
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sysdeps/ieee754/dbl-64/s_fmaf.c instead of math/s_fmaf.c.
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* sysdeps/x86_64/multiarch/s_fmaf.c: Likewise.
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* include/fenv.h (feupdateenv, fetestexcept): Add libm_hidden_proto.
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* math/feupdateenv.c (feupdateenv): Add libm_hidden_ver.
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* sysdeps/i386/fpu/feupdateenv.c (feupdateenv): Likewise.
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* sysdeps/powerpc/fpu/feupdateenv.c (feupdateenv): Likewise.
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* sysdeps/x86_64/fpu/feupdateenv.c (feupdateenv): Likewise.
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* sysdeps/sparc/fpu/feupdateenv.c (feupdateenv): Likewise.
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* sysdeps/ia64/fpu/feupdateenv.c (feupdateenv): Add libm_hidden_def.
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* sysdeps/s390/fpu/feupdateenv.c (feupdateenv): Likewise.
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* math/ftestexcept.c (fetestexcept): Likewise.
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* sysdeps/ia64/fpu/ftestexcept.c (fetestexcept): Likewise.
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* sysdeps/i386/fpu/ftestexcept.c (fetestexcept): Likewise.
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* sysdeps/s390/fpu/ftestexcept.c (fetestexcept): Likewise.
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* sysdeps/powerpc/fpu/ftestexcept.c (fetestexcept): Likewise.
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* sysdeps/x86_64/fpu/ftestexcept.c (fetestexcept): Likewise.
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* sysdeps/sparc/fpu/ftestexcept.c (fetestexcept): Likewise.
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* sysdeps/sh/sh4/fpu/ftestexcept.c (fetestexcept): Likewise.
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2010-10-11 Ulrich Drepper <drepper@gmail.com>
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2010-10-11 Ulrich Drepper <drepper@gmail.com>
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[BZ #12107]
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[BZ #12107]
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2
NEWS
2
NEWS
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@ -9,7 +9,7 @@ Version 2.13
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* The following bugs are resolved with this release:
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* The following bugs are resolved with this release:
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7066, 10851, 11611, 11640, 11701, 11840, 11856, 11883, 11903, 11904,
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3268, 7066, 10851, 11611, 11640, 11701, 11840, 11856, 11883, 11903, 11904,
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11968, 11979, 12005, 12037, 12067, 12077, 12092, 12107
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11968, 11979, 12005, 12037, 12067, 12077, 12092, 12107
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* New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
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* New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
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@ -17,5 +17,7 @@ libm_hidden_proto (fegetenv)
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libm_hidden_proto (fesetenv)
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libm_hidden_proto (fesetenv)
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libm_hidden_proto (fesetround)
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libm_hidden_proto (fesetround)
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libm_hidden_proto (feholdexcept)
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libm_hidden_proto (feholdexcept)
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libm_hidden_proto (feupdateenv)
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libm_hidden_proto (fetestexcept)
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#endif
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#endif
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@ -1,5 +1,5 @@
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/* Install given floating-point environment and raise exceptions.
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/* Install given floating-point environment and raise exceptions.
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Copyright (C) 1997, 1999, 2000 Free Software Foundation, Inc.
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Copyright (C) 1997, 1999, 2000, 2010 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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This file is part of the GNU C Library.
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Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
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Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
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@ -31,6 +31,7 @@ __feupdateenv (const fenv_t *envp)
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strong_alias (__feupdateenv, __old_feupdateenv)
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strong_alias (__feupdateenv, __old_feupdateenv)
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compat_symbol (libm, __old_feupdateenv, feupdateenv, GLIBC_2_1);
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compat_symbol (libm, __old_feupdateenv, feupdateenv, GLIBC_2_1);
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#endif
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#endif
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libm_hidden_ver (__feupdateenv, feupdateenv)
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versioned_symbol (libm, __feupdateenv, feupdateenv, GLIBC_2_2);
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versioned_symbol (libm, __feupdateenv, feupdateenv, GLIBC_2_2);
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stub_warning (feupdateenv)
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stub_warning (feupdateenv)
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@ -1,5 +1,5 @@
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/* Test exception in current environment.
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/* Test exception in current environment.
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Copyright (C) 1997 Free Software Foundation, Inc.
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Copyright (C) 1997, 2010 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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This file is part of the GNU C Library.
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Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
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Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
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@ -25,5 +25,6 @@ fetestexcept (int excepts)
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{
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{
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return 0;
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return 0;
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}
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}
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libm_hidden_def (fetestexcept)
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stub_warning (fetestexcept)
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stub_warning (fetestexcept)
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#include <stub-tag.h>
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#include <stub-tag.h>
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@ -2789,6 +2789,10 @@ fma_test (void)
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TEST_fff_f (fma, minus_infty, minus_infty, minus_infty, nan_value, INVALID_EXCEPTION);
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TEST_fff_f (fma, minus_infty, minus_infty, minus_infty, nan_value, INVALID_EXCEPTION);
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TEST_fff_f (fma, 1.25L, 0.75L, 0.0625L, 1.0L);
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TEST_fff_f (fma, 1.25L, 0.75L, 0.0625L, 1.0L);
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#ifdef TEST_FLOAT
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TEST_fff_f (fma, 0x1.7ff8p+13, 0x1.000002p+0, 0x1.ffffp-24, 0x1.7ff802p+13);
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TEST_fff_f (fma, 0x1.fffp+0, 0x1.00001p+0, -0x1.fffp+0, 0x1.fffp-20);
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#endif
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END (fma);
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END (fma);
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}
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}
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@ -1,5 +1,5 @@
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/* Install given floating-point environment and raise exceptions.
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/* Install given floating-point environment and raise exceptions.
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Copyright (C) 1997,99,2000,01,07 Free Software Foundation, Inc.
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Copyright (C) 1997,99,2000,01,07,2010 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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This file is part of the GNU C Library.
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Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
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Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
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@ -57,4 +57,5 @@ strong_alias (__feupdateenv, __old_feupdateenv)
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compat_symbol (libm, BP_SYM (__old_feupdateenv), BP_SYM (feupdateenv), GLIBC_2_1);
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compat_symbol (libm, BP_SYM (__old_feupdateenv), BP_SYM (feupdateenv), GLIBC_2_1);
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#endif
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#endif
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libm_hidden_ver (__feupdateenv, feupdateenv)
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versioned_symbol (libm, BP_SYM (__feupdateenv), BP_SYM (feupdateenv), GLIBC_2_2);
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versioned_symbol (libm, BP_SYM (__feupdateenv), BP_SYM (feupdateenv), GLIBC_2_2);
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@ -1,5 +1,5 @@
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/* Test exception in current environment.
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/* Test exception in current environment.
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Copyright (C) 1997, 2003, 2004 Free Software Foundation, Inc.
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Copyright (C) 1997, 2003, 2004, 2010 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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This file is part of the GNU C Library.
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Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
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Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
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@ -38,3 +38,4 @@ fetestexcept (int excepts)
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return (temp | xtemp) & excepts & FE_ALL_EXCEPT;
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return (temp | xtemp) & excepts & FE_ALL_EXCEPT;
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}
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}
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libm_hidden_def (fetestexcept)
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@ -33,4 +33,4 @@ weak_alias (__fmaf, fmaf)
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# define __fmaf __fmaf_ia32
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# define __fmaf __fmaf_ia32
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#endif
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#endif
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#include <math/s_fmaf.c>
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#include <sysdeps/ieee754/dbl-64/s_fmaf.c>
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/* Install given floating-point environment and raise exceptions.
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/* Install given floating-point environment and raise exceptions.
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Copyright (C) 1997, 2000, 2007 Free Software Foundation, Inc.
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Copyright (C) 1997, 2000, 2007, 2010 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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This file is part of the GNU C Library.
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Contributed by Christian Boissat <Christian.Boissat@cern.ch>, 1999.
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Contributed by Christian Boissat <Christian.Boissat@cern.ch>, 1999.
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@ -38,3 +38,4 @@ feupdateenv (const fenv_t *envp)
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/* Success. */
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/* Success. */
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return 0;
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return 0;
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}
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}
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libm_hidden_def (feupdateenv)
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@ -1,5 +1,5 @@
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/* Test exception in current environment.
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/* Test exception in current environment.
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Copyright (C) 1997, 1999, 2000 Free Software Foundation, Inc.
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Copyright (C) 1997, 1999, 2000, 2010 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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This file is part of the GNU C Library.
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Contributed by Christian Boissat <Christian.Boissat@cern.ch>, 1999.
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Contributed by Christian Boissat <Christian.Boissat@cern.ch>, 1999.
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@ -30,3 +30,4 @@ fetestexcept (int excepts)
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return (fpsr >> 13) & excepts & FE_ALL_EXCEPT;
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return (fpsr >> 13) & excepts & FE_ALL_EXCEPT;
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}
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}
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libm_hidden_def (fetestexcept)
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@ -0,0 +1,50 @@
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/* Compute x * y + z as ternary operation.
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Copyright (C) 2010 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Jakub Jelinek <jakub@redhat.com>, 2010.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#include <math.h>
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#include <fenv.h>
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#include <ieee754.h>
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/* This implementation relies on double being more than twice as
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precise as float and uses rounding to odd in order to avoid problems
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with double rounding.
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See a paper by Boldo and Melquiond:
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http://www.lri.fr/~melquion/doc/08-tc.pdf */
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float
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__fmaf (float x, float y, float z)
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{
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fenv_t env;
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/* Multiplication is always exact. */
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double temp = (double) x * (double) y;
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union ieee754_double u;
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feholdexcept (&env);
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fesetround (FE_TOWARDZERO);
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/* Perform addition with round to odd. */
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u.d = temp + (double) z;
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if ((u.ieee.mantissa1 & 1) == 0 && u.ieee.exponent != 0xff)
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u.ieee.mantissa1 |= fetestexcept (FE_INEXACT) != 0;
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feupdateenv (&env);
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/* And finally truncation with round to nearest. */
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return (float) u.d;
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}
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#ifndef __fmaf
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weak_alias (__fmaf, fmaf)
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#endif
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@ -1,5 +1,5 @@
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/* Install given floating-point environment and raise exceptions.
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/* Install given floating-point environment and raise exceptions.
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Copyright (C) 1997, 1999, 2000, 2001, 2007, 2008
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Copyright (C) 1997, 1999, 2000, 2001, 2007, 2008, 2010
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Free Software Foundation, Inc.
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Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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This file is part of the GNU C Library.
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Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
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Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
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@ -66,4 +66,5 @@ strong_alias (__feupdateenv, __old_feupdateenv)
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compat_symbol (libm, BP_SYM (__old_feupdateenv), BP_SYM (feupdateenv), GLIBC_2_1);
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compat_symbol (libm, BP_SYM (__old_feupdateenv), BP_SYM (feupdateenv), GLIBC_2_1);
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#endif
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#endif
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libm_hidden_ver (__feupdateenv, feupdateenv)
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versioned_symbol (libm, BP_SYM (__feupdateenv), BP_SYM (feupdateenv), GLIBC_2_2);
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versioned_symbol (libm, BP_SYM (__feupdateenv), BP_SYM (feupdateenv), GLIBC_2_2);
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@ -1,5 +1,5 @@
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/* Test exception in current environment.
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/* Test exception in current environment.
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Copyright (C) 1997 Free Software Foundation, Inc.
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Copyright (C) 1997, 2010 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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The GNU C Library is free software; you can redistribute it and/or
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@ -31,3 +31,4 @@ fetestexcept (int excepts)
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just: */
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just: */
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return u.l[1] & excepts;
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return u.l[1] & excepts;
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}
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}
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libm_hidden_def (fetestexcept)
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@ -1,5 +1,5 @@
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/* Install given floating-point environment and raise exceptions.
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/* Install given floating-point environment and raise exceptions.
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Copyright (C) 2000 Free Software Foundation, Inc.
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Copyright (C) 2000, 2010 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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This file is part of the GNU C Library.
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Contributed by Denis Joseph Barrow (djbarrow@de.ibm.com).
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Contributed by Denis Joseph Barrow (djbarrow@de.ibm.com).
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@ -38,3 +38,4 @@ feupdateenv (const fenv_t *envp)
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/* Success. */
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/* Success. */
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return 0;
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return 0;
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}
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}
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libm_hidden_def (feupdateenv)
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@ -1,5 +1,5 @@
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/* Test exception in current environment.
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/* Test exception in current environment.
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Copyright (C) 2000 Free Software Foundation, Inc.
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Copyright (C) 2000, 2010 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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This file is part of the GNU C Library.
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Contributed by Denis Joseph Barrow (djbarrow@de.ibm.com).
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Contributed by Denis Joseph Barrow (djbarrow@de.ibm.com).
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@ -31,3 +31,4 @@ fetestexcept (int excepts)
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temp = (temp >> FPC_DXC_SHIFT) | (temp >> FPC_FLAGS_SHIFT);
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temp = (temp >> FPC_DXC_SHIFT) | (temp >> FPC_FLAGS_SHIFT);
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return temp & excepts & FE_ALL_EXCEPT;
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return temp & excepts & FE_ALL_EXCEPT;
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}
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}
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libm_hidden_def (fetestexcept)
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@ -1,5 +1,5 @@
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/* Test exception in current environment.
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/* Test exception in current environment.
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Copyright (C) 1997, 1998, 2000 Free Software Foundation, Inc.
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Copyright (C) 1997, 1998, 2000, 2010 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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The GNU C Library is free software; you can redistribute it and/or
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@ -30,3 +30,4 @@ fetestexcept (int excepts)
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return temp & excepts & FE_ALL_EXCEPT;
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return temp & excepts & FE_ALL_EXCEPT;
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}
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}
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libm_hidden_def (fetestexcept)
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@ -1,5 +1,5 @@
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/* Install given floating-point environment and raise exceptions.
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/* Install given floating-point environment and raise exceptions.
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Copyright (C) 1997, 1999, 2000 Free Software Foundation, Inc.
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Copyright (C) 1997, 1999, 2000, 2010 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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The GNU C Library is free software; you can redistribute it and/or
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@ -46,4 +46,5 @@ strong_alias (__feupdateenv, __old_feupdateenv)
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compat_symbol (libm, __old_feupdateenv, feupdateenv, GLIBC_2_1);
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compat_symbol (libm, __old_feupdateenv, feupdateenv, GLIBC_2_1);
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#endif
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#endif
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libm_hidden_ver (__feupdateenv, feupdateenv)
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versioned_symbol (libm, __feupdateenv, feupdateenv, GLIBC_2_2);
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versioned_symbol (libm, __feupdateenv, feupdateenv, GLIBC_2_2);
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@ -1,5 +1,5 @@
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/* Test exception in current environment.
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/* Test exception in current environment.
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Copyright (C) 1997 Free Software Foundation, Inc.
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Copyright (C) 1997, 2010 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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The GNU C Library is free software; you can redistribute it and/or
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@ -28,3 +28,4 @@ fetestexcept (int excepts)
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return tmp & excepts & FE_ALL_EXCEPT;
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return tmp & excepts & FE_ALL_EXCEPT;
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||||||
}
|
}
|
||||||
|
libm_hidden_def (fetestexcept)
|
||||||
|
|
|
@ -1,5 +1,5 @@
|
||||||
/* Install given floating-point environment and raise exceptions.
|
/* Install given floating-point environment and raise exceptions.
|
||||||
Copyright (C) 1997,99,2000,01,07 Free Software Foundation, Inc.
|
Copyright (C) 1997,99,2000,01,07,2010 Free Software Foundation, Inc.
|
||||||
This file is part of the GNU C Library.
|
This file is part of the GNU C Library.
|
||||||
Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
|
Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
|
||||||
|
|
||||||
|
@ -48,4 +48,5 @@ strong_alias (__feupdateenv, __old_feupdateenv)
|
||||||
compat_symbol (libm, __old_feupdateenv, feupdateenv, GLIBC_2_1);
|
compat_symbol (libm, __old_feupdateenv, feupdateenv, GLIBC_2_1);
|
||||||
#endif
|
#endif
|
||||||
|
|
||||||
|
libm_hidden_ver (__feupdateenv, feupdateenv)
|
||||||
versioned_symbol (libm, __feupdateenv, feupdateenv, GLIBC_2_2);
|
versioned_symbol (libm, __feupdateenv, feupdateenv, GLIBC_2_2);
|
||||||
|
|
|
@ -1,5 +1,5 @@
|
||||||
/* Test exception in current environment.
|
/* Test exception in current environment.
|
||||||
Copyright (C) 2001 Free Software Foundation, Inc.
|
Copyright (C) 2001, 2010 Free Software Foundation, Inc.
|
||||||
This file is part of the GNU C Library.
|
This file is part of the GNU C Library.
|
||||||
|
|
||||||
The GNU C Library is free software; you can redistribute it and/or
|
The GNU C Library is free software; you can redistribute it and/or
|
||||||
|
@ -31,3 +31,4 @@ fetestexcept (int excepts)
|
||||||
|
|
||||||
return (temp | mxscr) & excepts & FE_ALL_EXCEPT;
|
return (temp | mxscr) & excepts & FE_ALL_EXCEPT;
|
||||||
}
|
}
|
||||||
|
libm_hidden_def (fetestexcept)
|
||||||
|
|
|
@ -1,5 +1,5 @@
|
||||||
/* FMA version of fmaf.
|
/* FMA version of fmaf.
|
||||||
Copyright (C) 2009 Free Software Foundation, Inc.
|
Copyright (C) 2009, 2010 Free Software Foundation, Inc.
|
||||||
This file is part of the GNU C Library.
|
This file is part of the GNU C Library.
|
||||||
|
|
||||||
The GNU C Library is free software; you can redistribute it and/or
|
The GNU C Library is free software; you can redistribute it and/or
|
||||||
|
@ -39,4 +39,4 @@ weak_alias (__fmaf, fmaf)
|
||||||
# define __fmaf __fmaf_sse2
|
# define __fmaf __fmaf_sse2
|
||||||
#endif
|
#endif
|
||||||
|
|
||||||
#include <math/s_fmaf.c>
|
#include <sysdeps/ieee754/dbl-64/s_fmaf.c>
|
||||||
|
|
Loading…
Reference in New Issue