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Make fma use of Dekker and Knuth algorithms use round-to-nearest (bug 14796).

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This commit is contained in:
Joseph Myers 2012-11-03 19:48:53 +00:00
parent fbeafedeea
commit 5b5b04d628
34 changed files with 274 additions and 21 deletions
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41
ChangeLog
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@ -1,5 +1,46 @@
2012-11-03 Joseph Myers <joseph@codesourcery.com>
[BZ #14796]
* sysdeps/ieee754/dbl-64/s_fma.c (__fma): Set rounding mode to
FE_TONEAREST before applying Dekker multiplication and Knuth
addition. Clear inexact exceptions and check for exact zero
results afterwards.
* sysdeps/ieee754/ldbl-128/s_fmal.c (__fmal): Likewise.
* sysdeps/ieee754/ldbl-96/s_fma.c (__fma): Likewise.
* sysdeps/ieee754/ldbl-96/s_fmal.c (__fmal): Likewise.
* math/libm-test.inc (fma_test): Add more tests.
(fma_test_towardzero): Likewise.
(fma_test_downward): Likewise.
(fma_test_upward): Likewise.
* sysdeps/generic/math_private.h (default_libc_fesetround): New
function.
(libc_fesetround): New macro.
(libc_fesetroundf): Likewise.
(libc_fesetroundl): Likewise.
* sysdeps/i386/fpu/fenv_private.h (libc_fesetround_sse): New
function.
(libc_fesetround_387): Likewise.
(libc_fesetroundf): New macro.
(libc_fesetround): Likewise.
(libc_fesetroundl): Likewise.
* sysdeps/sparc/fpu/fenv_private.h (libc_fesetround): New
function.
(libc_fesetroundf): New macro.
(libc_fesetround): Likewise.
(libc_fesetroundl): Likewise.
* include/fenv.h (feclearexcept): Add libm_hidden_proto.
* math/fclrexcpt.c (feclearexcept): Add libm_hidden_ver.
* sysdeps/i386/fpu/fclrexcpt.c (feclearexcept): Add
libm_hidden_ver.
* sysdeps/powerpc/fpu/fclrexcpt.c (feclearexcept): Likewise.
* sysdeps/s390/fpu/fclrexcpt.c (feclearexcept): Add
libm_hidden_def.
* sysdeps/sh/sh4/fpu/fclrexcpt.c (feclearexcept): Likewise.
* sysdeps/sparc/fpu/fclrexcpt.c (feclearexcept): Add
libm_hidden_ver.
* sysdeps/x86_64/fpu/fclrexcpt.c (feclearexcept): Add
libm_hidden_def.
[BZ #3439]
* sysdeps/powerpc/bits/fenv.h (FE_INEXACT): Define macro to
integer constant usable in #if and use that to give value to enum

2
NEWS
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@ -18,7 +18,7 @@ Version 2.17
14532, 14538, 14543, 14544, 14545, 14557, 14562, 14568, 14576, 14579,
14583, 14587, 14595, 14602, 14610, 14621, 14638, 14645, 14648, 14652,
14660, 14661, 14669, 14683, 14694, 14716, 14743, 14767, 14783, 14784,
14785.
14785, 14796.
* Support for STT_GNU_IFUNC symbols added for s390 and s390x.
Optimized versions of memcpy, memset, and memcmp added for System z10 and

1
include/fenv.h
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@ -20,6 +20,7 @@ libm_hidden_proto (fesetround)
libm_hidden_proto (feholdexcept)
libm_hidden_proto (feupdateenv)
libm_hidden_proto (fetestexcept)
libm_hidden_proto (feclearexcept)
#endif
#endif

1
math/fclrexcpt.c
View File

@ -30,6 +30,7 @@ __feclearexcept (int excepts)
strong_alias (__feclearexcept, __old_feclearexcept)
compat_symbol (libm, __old_feclearexcept, feclearexcept, GLIBC_2_1);
#endif
libm_hidden_ver (__feclearexcept, feclearexcept)
versioned_symbol (libm, __feclearexcept, feclearexcept, GLIBC_2_2);
stub_warning (feclearexcept)

64
math/libm-test.inc
View File

@ -4649,6 +4649,10 @@ fma_test (void)
TEST_fff_f (fma, 0x1p-149, -0x1p-149, 0x1p-149, 0x1p-149, UNDERFLOW_EXCEPTION);
TEST_fff_f (fma, 0x1p-149, 0x1p-149, -0x1p-149, -0x1p-149, UNDERFLOW_EXCEPTION);
TEST_fff_f (fma, 0x1p-149, -0x1p-149, -0x1p-149, -0x1p-149, UNDERFLOW_EXCEPTION);
TEST_fff_f (fma, 0x0.fffp0, 0x0.fffp0, -0x0.ffep0, 0x1p-24);
TEST_fff_f (fma, 0x0.fffp0, -0x0.fffp0, 0x0.ffep0, -0x1p-24);
TEST_fff_f (fma, -0x0.fffp0, 0x0.fffp0, 0x0.ffep0, -0x1p-24);
TEST_fff_f (fma, -0x0.fffp0, -0x0.fffp0, -0x0.ffep0, 0x1p-24);
#endif
#if defined (TEST_DOUBLE) && DBL_MANT_DIG == 53
TEST_fff_f (fma, 0x1.7fp+13, 0x1.0000000000001p+0, 0x1.ffep-48, 0x1.7f00000000001p+13);
@ -4695,6 +4699,10 @@ fma_test (void)
TEST_fff_f (fma, 0x1p-1074, -0x1p-1074, 0x1p-1074, 0x1p-1074, UNDERFLOW_EXCEPTION);
TEST_fff_f (fma, 0x1p-1074, 0x1p-1074, -0x1p-1074, -0x1p-1074, UNDERFLOW_EXCEPTION);
TEST_fff_f (fma, 0x1p-1074, -0x1p-1074, -0x1p-1074, -0x1p-1074, UNDERFLOW_EXCEPTION);
TEST_fff_f (fma, 0x0.fffffffffffff8p0, 0x0.fffffffffffff8p0, -0x0.fffffffffffffp0, 0x1p-106);
TEST_fff_f (fma, 0x0.fffffffffffff8p0, -0x0.fffffffffffff8p0, 0x0.fffffffffffffp0, -0x1p-106);
TEST_fff_f (fma, -0x0.fffffffffffff8p0, 0x0.fffffffffffff8p0, 0x0.fffffffffffffp0, -0x1p-106);
TEST_fff_f (fma, -0x0.fffffffffffff8p0, -0x0.fffffffffffff8p0, -0x0.fffffffffffffp0, 0x1p-106);
#endif
#if defined (TEST_LDOUBLE) && LDBL_MANT_DIG == 64
TEST_fff_f (fma, -0x8.03fcp+3696L, 0xf.fffffffffffffffp-6140L, 0x8.3ffffffffffffffp-2450L, -0x8.01ecp-2440L);
@ -4727,6 +4735,10 @@ fma_test (void)
TEST_fff_f (fma, 0x1p-16445L, -0x1p-16445L, 0x1p-16445L, 0x1p-16445L, UNDERFLOW_EXCEPTION);
TEST_fff_f (fma, 0x1p-16445L, 0x1p-16445L, -0x1p-16445L, -0x1p-16445L, UNDERFLOW_EXCEPTION);
TEST_fff_f (fma, 0x1p-16445L, -0x1p-16445L, -0x1p-16445L, -0x1p-16445L, UNDERFLOW_EXCEPTION);
TEST_fff_f (fma, 0x0.ffffffffffffffffp0L, 0x0.ffffffffffffffffp0L, -0x0.fffffffffffffffep0L, 0x1p-128L);
TEST_fff_f (fma, 0x0.ffffffffffffffffp0L, -0x0.ffffffffffffffffp0L, 0x0.fffffffffffffffep0L, -0x1p-128L);
TEST_fff_f (fma, -0x0.ffffffffffffffffp0L, 0x0.ffffffffffffffffp0L, 0x0.fffffffffffffffep0L, -0x1p-128L);
TEST_fff_f (fma, -0x0.ffffffffffffffffp0L, -0x0.ffffffffffffffffp0L, -0x0.fffffffffffffffep0L, 0x1p-128L);
#endif
#if defined (TEST_LDOUBLE) && LDBL_MANT_DIG == 113
TEST_fff_f (fma, 0x1.bb2de33e02ccbbfa6e245a7c1f71p-2584L, -0x1.6b500daf0580d987f1bc0cadfcddp-13777L, 0x1.613cd91d9fed34b33820e5ab9d8dp-16378L, -0x1.3a79fb50eb9ce887cffa0f09bd9fp-16360L);
@ -4766,6 +4778,10 @@ fma_test (void)
TEST_fff_f (fma, 0x1p-16494L, -0x1p-16494L, 0x1p-16494L, 0x1p-16494L, UNDERFLOW_EXCEPTION);
TEST_fff_f (fma, 0x1p-16494L, 0x1p-16494L, -0x1p-16494L, -0x1p-16494L, UNDERFLOW_EXCEPTION);
TEST_fff_f (fma, 0x1p-16494L, -0x1p-16494L, -0x1p-16494L, -0x1p-16494L, UNDERFLOW_EXCEPTION);
TEST_fff_f (fma, 0x0.ffffffffffffffffffffffffffff8p0L, 0x0.ffffffffffffffffffffffffffff8p0L, -0x0.ffffffffffffffffffffffffffffp0L, 0x1p-226L);
TEST_fff_f (fma, 0x0.ffffffffffffffffffffffffffff8p0L, -0x0.ffffffffffffffffffffffffffff8p0L, 0x0.ffffffffffffffffffffffffffffp0L, -0x1p-226L);
TEST_fff_f (fma, -0x0.ffffffffffffffffffffffffffff8p0L, 0x0.ffffffffffffffffffffffffffff8p0L, 0x0.ffffffffffffffffffffffffffffp0L, -0x1p-226L);
TEST_fff_f (fma, -0x0.ffffffffffffffffffffffffffff8p0L, -0x0.ffffffffffffffffffffffffffff8p0L, -0x0.ffffffffffffffffffffffffffffp0L, 0x1p-226L);
#endif
END (fma);
@ -4846,6 +4862,10 @@ fma_test_towardzero (void)
TEST_fff_f (fma, 0x1p-149, -0x1p-149, 0x1p-149, plus_zero, UNDERFLOW_EXCEPTION);
TEST_fff_f (fma, 0x1p-149, 0x1p-149, -0x1p-149, minus_zero, UNDERFLOW_EXCEPTION);
TEST_fff_f (fma, 0x1p-149, -0x1p-149, -0x1p-149, -0x1p-149, UNDERFLOW_EXCEPTION);
TEST_fff_f (fma, 0x0.fffp0, 0x0.fffp0, -0x0.ffep0, 0x1p-24);
TEST_fff_f (fma, 0x0.fffp0, -0x0.fffp0, 0x0.ffep0, -0x1p-24);
TEST_fff_f (fma, -0x0.fffp0, 0x0.fffp0, 0x0.ffep0, -0x1p-24);
TEST_fff_f (fma, -0x0.fffp0, -0x0.fffp0, -0x0.ffep0, 0x1p-24);
#endif
#if defined (TEST_DOUBLE) && DBL_MANT_DIG == 53
TEST_fff_f (fma, 0x1.4p-1022, 0x1.0000000000002p-1, 0x1p-1024, 0x1.c000000000002p-1023, UNDERFLOW_EXCEPTION);
@ -4872,6 +4892,10 @@ fma_test_towardzero (void)
TEST_fff_f (fma, 0x1p-1074, -0x1p-1074, 0x1p-1074, plus_zero, UNDERFLOW_EXCEPTION);
TEST_fff_f (fma, 0x1p-1074, 0x1p-1074, -0x1p-1074, minus_zero, UNDERFLOW_EXCEPTION);
TEST_fff_f (fma, 0x1p-1074, -0x1p-1074, -0x1p-1074, -0x1p-1074, UNDERFLOW_EXCEPTION);
TEST_fff_f (fma, 0x0.fffffffffffff8p0, 0x0.fffffffffffff8p0, -0x0.fffffffffffffp0, 0x1p-106);
TEST_fff_f (fma, 0x0.fffffffffffff8p0, -0x0.fffffffffffff8p0, 0x0.fffffffffffffp0, -0x1p-106);
TEST_fff_f (fma, -0x0.fffffffffffff8p0, 0x0.fffffffffffff8p0, 0x0.fffffffffffffp0, -0x1p-106);
TEST_fff_f (fma, -0x0.fffffffffffff8p0, -0x0.fffffffffffff8p0, -0x0.fffffffffffffp0, 0x1p-106);
#endif
#if defined (TEST_LDOUBLE) && LDBL_MANT_DIG == 64
TEST_fff_f (fma, 0x1.4p-16382L, 0x1.0000000000000004p-1L, 0x1p-16384L, 0x1.c000000000000004p-16383L, UNDERFLOW_EXCEPTION);
@ -4898,6 +4922,10 @@ fma_test_towardzero (void)
TEST_fff_f (fma, 0x1p-16445L, -0x1p-16445L, 0x1p-16445L, plus_zero, UNDERFLOW_EXCEPTION);
TEST_fff_f (fma, 0x1p-16445L, 0x1p-16445L, -0x1p-16445L, minus_zero, UNDERFLOW_EXCEPTION);
TEST_fff_f (fma, 0x1p-16445L, -0x1p-16445L, -0x1p-16445L, -0x1p-16445L, UNDERFLOW_EXCEPTION);
TEST_fff_f (fma, 0x0.ffffffffffffffffp0L, 0x0.ffffffffffffffffp0L, -0x0.fffffffffffffffep0L, 0x1p-128L);
TEST_fff_f (fma, 0x0.ffffffffffffffffp0L, -0x0.ffffffffffffffffp0L, 0x0.fffffffffffffffep0L, -0x1p-128L);
TEST_fff_f (fma, -0x0.ffffffffffffffffp0L, 0x0.ffffffffffffffffp0L, 0x0.fffffffffffffffep0L, -0x1p-128L);
TEST_fff_f (fma, -0x0.ffffffffffffffffp0L, -0x0.ffffffffffffffffp0L, -0x0.fffffffffffffffep0L, 0x1p-128L);
#endif
#if defined (TEST_LDOUBLE) && LDBL_MANT_DIG == 113
TEST_fff_f (fma, 0x1.4p-16382L, 0x1.0000000000000000000000000002p-1L, 0x1p-16384L, 0x1.c000000000000000000000000002p-16383L, UNDERFLOW_EXCEPTION);
@ -4924,6 +4952,10 @@ fma_test_towardzero (void)
TEST_fff_f (fma, 0x1p-16494L, -0x1p-16494L, 0x1p-16494L, plus_zero, UNDERFLOW_EXCEPTION);
TEST_fff_f (fma, 0x1p-16494L, 0x1p-16494L, -0x1p-16494L, minus_zero, UNDERFLOW_EXCEPTION);
TEST_fff_f (fma, 0x1p-16494L, -0x1p-16494L, -0x1p-16494L, -0x1p-16494L, UNDERFLOW_EXCEPTION);
TEST_fff_f (fma, 0x0.ffffffffffffffffffffffffffff8p0L, 0x0.ffffffffffffffffffffffffffff8p0L, -0x0.ffffffffffffffffffffffffffffp0L, 0x1p-226L);
TEST_fff_f (fma, 0x0.ffffffffffffffffffffffffffff8p0L, -0x0.ffffffffffffffffffffffffffff8p0L, 0x0.ffffffffffffffffffffffffffffp0L, -0x1p-226L);
TEST_fff_f (fma, -0x0.ffffffffffffffffffffffffffff8p0L, 0x0.ffffffffffffffffffffffffffff8p0L, 0x0.ffffffffffffffffffffffffffffp0L, -0x1p-226L);
TEST_fff_f (fma, -0x0.ffffffffffffffffffffffffffff8p0L, -0x0.ffffffffffffffffffffffffffff8p0L, -0x0.ffffffffffffffffffffffffffffp0L, 0x1p-226L);
#endif
}
@ -5007,6 +5039,10 @@ fma_test_downward (void)
TEST_fff_f (fma, 0x1p-149, -0x1p-149, 0x1p-149, plus_zero, UNDERFLOW_EXCEPTION);
TEST_fff_f (fma, 0x1p-149, 0x1p-149, -0x1p-149, -0x1p-149, UNDERFLOW_EXCEPTION);
TEST_fff_f (fma, 0x1p-149, -0x1p-149, -0x1p-149, -0x1p-148, UNDERFLOW_EXCEPTION);
TEST_fff_f (fma, 0x0.fffp0, 0x0.fffp0, -0x0.ffep0, 0x1p-24);
TEST_fff_f (fma, 0x0.fffp0, -0x0.fffp0, 0x0.ffep0, -0x1p-24);
TEST_fff_f (fma, -0x0.fffp0, 0x0.fffp0, 0x0.ffep0, -0x1p-24);
TEST_fff_f (fma, -0x0.fffp0, -0x0.fffp0, -0x0.ffep0, 0x1p-24);
#endif
#if defined (TEST_DOUBLE) && DBL_MANT_DIG == 53
TEST_fff_f (fma, 0x1.4p-1022, 0x1.0000000000002p-1, 0x1p-1024, 0x1.c000000000002p-1023, UNDERFLOW_EXCEPTION);
@ -5033,6 +5069,10 @@ fma_test_downward (void)
TEST_fff_f (fma, 0x1p-1074, -0x1p-1074, 0x1p-1074, plus_zero, UNDERFLOW_EXCEPTION);
TEST_fff_f (fma, 0x1p-1074, 0x1p-1074, -0x1p-1074, -0x1p-1074, UNDERFLOW_EXCEPTION);
TEST_fff_f (fma, 0x1p-1074, -0x1p-1074, -0x1p-1074, -0x1p-1073, UNDERFLOW_EXCEPTION);
TEST_fff_f (fma, 0x0.fffffffffffff8p0, 0x0.fffffffffffff8p0, -0x0.fffffffffffffp0, 0x1p-106);
TEST_fff_f (fma, 0x0.fffffffffffff8p0, -0x0.fffffffffffff8p0, 0x0.fffffffffffffp0, -0x1p-106);
TEST_fff_f (fma, -0x0.fffffffffffff8p0, 0x0.fffffffffffff8p0, 0x0.fffffffffffffp0, -0x1p-106);
TEST_fff_f (fma, -0x0.fffffffffffff8p0, -0x0.fffffffffffff8p0, -0x0.fffffffffffffp0, 0x1p-106);
#endif
#if defined (TEST_LDOUBLE) && LDBL_MANT_DIG == 64
TEST_fff_f (fma, 0x1.4p-16382L, 0x1.0000000000000004p-1L, 0x1p-16384L, 0x1.c000000000000004p-16383L, UNDERFLOW_EXCEPTION);
@ -5059,6 +5099,10 @@ fma_test_downward (void)
TEST_fff_f (fma, 0x1p-16445L, -0x1p-16445L, 0x1p-16445L, plus_zero, UNDERFLOW_EXCEPTION);
TEST_fff_f (fma, 0x1p-16445L, 0x1p-16445L, -0x1p-16445L, -0x1p-16445L, UNDERFLOW_EXCEPTION);
TEST_fff_f (fma, 0x1p-16445L, -0x1p-16445L, -0x1p-16445L, -0x1p-16444L, UNDERFLOW_EXCEPTION);
TEST_fff_f (fma, 0x0.ffffffffffffffffp0L, 0x0.ffffffffffffffffp0L, -0x0.fffffffffffffffep0L, 0x1p-128L);
TEST_fff_f (fma, 0x0.ffffffffffffffffp0L, -0x0.ffffffffffffffffp0L, 0x0.fffffffffffffffep0L, -0x1p-128L);
TEST_fff_f (fma, -0x0.ffffffffffffffffp0L, 0x0.ffffffffffffffffp0L, 0x0.fffffffffffffffep0L, -0x1p-128L);
TEST_fff_f (fma, -0x0.ffffffffffffffffp0L, -0x0.ffffffffffffffffp0L, -0x0.fffffffffffffffep0L, 0x1p-128L);
#endif
#if defined (TEST_LDOUBLE) && LDBL_MANT_DIG == 113
TEST_fff_f (fma, 0x1.4p-16382L, 0x1.0000000000000000000000000002p-1L, 0x1p-16384L, 0x1.c000000000000000000000000002p-16383L, UNDERFLOW_EXCEPTION);
@ -5085,6 +5129,10 @@ fma_test_downward (void)
TEST_fff_f (fma, 0x1p-16494L, -0x1p-16494L, 0x1p-16494L, plus_zero, UNDERFLOW_EXCEPTION);
TEST_fff_f (fma, 0x1p-16494L, 0x1p-16494L, -0x1p-16494L, -0x1p-16494L, UNDERFLOW_EXCEPTION);
TEST_fff_f (fma, 0x1p-16494L, -0x1p-16494L, -0x1p-16494L, -0x1p-16493L, UNDERFLOW_EXCEPTION);
TEST_fff_f (fma, 0x0.ffffffffffffffffffffffffffff8p0L, 0x0.ffffffffffffffffffffffffffff8p0L, -0x0.ffffffffffffffffffffffffffffp0L, 0x1p-226L);
TEST_fff_f (fma, 0x0.ffffffffffffffffffffffffffff8p0L, -0x0.ffffffffffffffffffffffffffff8p0L, 0x0.ffffffffffffffffffffffffffffp0L, -0x1p-226L);
TEST_fff_f (fma, -0x0.ffffffffffffffffffffffffffff8p0L, 0x0.ffffffffffffffffffffffffffff8p0L, 0x0.ffffffffffffffffffffffffffffp0L, -0x1p-226L);
TEST_fff_f (fma, -0x0.ffffffffffffffffffffffffffff8p0L, -0x0.ffffffffffffffffffffffffffff8p0L, -0x0.ffffffffffffffffffffffffffffp0L, 0x1p-226L);
#endif
}
@ -5168,6 +5216,10 @@ fma_test_upward (void)
TEST_fff_f (fma, 0x1p-149, -0x1p-149, 0x1p-149, 0x1p-149, UNDERFLOW_EXCEPTION);
TEST_fff_f (fma, 0x1p-149, 0x1p-149, -0x1p-149, minus_zero, UNDERFLOW_EXCEPTION);
TEST_fff_f (fma, 0x1p-149, -0x1p-149, -0x1p-149, -0x1p-149, UNDERFLOW_EXCEPTION);
TEST_fff_f (fma, 0x0.fffp0, 0x0.fffp0, -0x0.ffep0, 0x1p-24);
TEST_fff_f (fma, 0x0.fffp0, -0x0.fffp0, 0x0.ffep0, -0x1p-24);
TEST_fff_f (fma, -0x0.fffp0, 0x0.fffp0, 0x0.ffep0, -0x1p-24);
TEST_fff_f (fma, -0x0.fffp0, -0x0.fffp0, -0x0.ffep0, 0x1p-24);
#endif
#if defined (TEST_DOUBLE) && DBL_MANT_DIG == 53
TEST_fff_f (fma, 0x1.4p-1022, 0x1.0000000000002p-1, 0x1p-1024, 0x1.c000000000004p-1023, UNDERFLOW_EXCEPTION);
@ -5194,6 +5246,10 @@ fma_test_upward (void)
TEST_fff_f (fma, 0x1p-1074, -0x1p-1074, 0x1p-1074, 0x1p-1074, UNDERFLOW_EXCEPTION);
TEST_fff_f (fma, 0x1p-1074, 0x1p-1074, -0x1p-1074, minus_zero, UNDERFLOW_EXCEPTION);
TEST_fff_f (fma, 0x1p-1074, -0x1p-1074, -0x1p-1074, -0x1p-1074, UNDERFLOW_EXCEPTION);
TEST_fff_f (fma, 0x0.fffffffffffff8p0, 0x0.fffffffffffff8p0, -0x0.fffffffffffffp0, 0x1p-106);
TEST_fff_f (fma, 0x0.fffffffffffff8p0, -0x0.fffffffffffff8p0, 0x0.fffffffffffffp0, -0x1p-106);
TEST_fff_f (fma, -0x0.fffffffffffff8p0, 0x0.fffffffffffff8p0, 0x0.fffffffffffffp0, -0x1p-106);
TEST_fff_f (fma, -0x0.fffffffffffff8p0, -0x0.fffffffffffff8p0, -0x0.fffffffffffffp0, 0x1p-106);
#endif
#if defined (TEST_LDOUBLE) && LDBL_MANT_DIG == 64
TEST_fff_f (fma, 0x1.4p-16382L, 0x1.0000000000000004p-1L, 0x1p-16384L, 0x1.c000000000000008p-16383L, UNDERFLOW_EXCEPTION);
@ -5220,6 +5276,10 @@ fma_test_upward (void)
TEST_fff_f (fma, 0x1p-16445L, -0x1p-16445L, 0x1p-16445L, 0x1p-16445L, UNDERFLOW_EXCEPTION);
TEST_fff_f (fma, 0x1p-16445L, 0x1p-16445L, -0x1p-16445L, minus_zero, UNDERFLOW_EXCEPTION);
TEST_fff_f (fma, 0x1p-16445L, -0x1p-16445L, -0x1p-16445L, -0x1p-16445L, UNDERFLOW_EXCEPTION);
TEST_fff_f (fma, 0x0.ffffffffffffffffp0L, 0x0.ffffffffffffffffp0L, -0x0.fffffffffffffffep0L, 0x1p-128L);
TEST_fff_f (fma, 0x0.ffffffffffffffffp0L, -0x0.ffffffffffffffffp0L, 0x0.fffffffffffffffep0L, -0x1p-128L);
TEST_fff_f (fma, -0x0.ffffffffffffffffp0L, 0x0.ffffffffffffffffp0L, 0x0.fffffffffffffffep0L, -0x1p-128L);
TEST_fff_f (fma, -0x0.ffffffffffffffffp0L, -0x0.ffffffffffffffffp0L, -0x0.fffffffffffffffep0L, 0x1p-128L);
#endif
#if defined (TEST_LDOUBLE) && LDBL_MANT_DIG == 113
TEST_fff_f (fma, 0x1.4p-16382L, 0x1.0000000000000000000000000002p-1L, 0x1p-16384L, 0x1.c000000000000000000000000004p-16383L, UNDERFLOW_EXCEPTION);
@ -5246,6 +5306,10 @@ fma_test_upward (void)
TEST_fff_f (fma, 0x1p-16494L, -0x1p-16494L, 0x1p-16494L, 0x1p-16494L, UNDERFLOW_EXCEPTION);
TEST_fff_f (fma, 0x1p-16494L, 0x1p-16494L, -0x1p-16494L, minus_zero, UNDERFLOW_EXCEPTION);
TEST_fff_f (fma, 0x1p-16494L, -0x1p-16494L, -0x1p-16494L, -0x1p-16494L, UNDERFLOW_EXCEPTION);
TEST_fff_f (fma, 0x0.ffffffffffffffffffffffffffff8p0L, 0x0.ffffffffffffffffffffffffffff8p0L, -0x0.ffffffffffffffffffffffffffffp0L, 0x1p-226L);
TEST_fff_f (fma, 0x0.ffffffffffffffffffffffffffff8p0L, -0x0.ffffffffffffffffffffffffffff8p0L, 0x0.ffffffffffffffffffffffffffffp0L, -0x1p-226L);
TEST_fff_f (fma, -0x0.ffffffffffffffffffffffffffff8p0L, 0x0.ffffffffffffffffffffffffffff8p0L, 0x0.ffffffffffffffffffffffffffffp0L, -0x1p-226L);
TEST_fff_f (fma, -0x0.ffffffffffffffffffffffffffff8p0L, -0x0.ffffffffffffffffffffffffffff8p0L, -0x0.ffffffffffffffffffffffffffffp0L, 0x1p-226L);
#endif
}

3
ports/ChangeLog.alpha
View File

@ -1,5 +1,8 @@
2012-11-03 Joseph Myers <joseph@codesourcery.com>
* sysdeps/alpha/fpu/fclrexcpt.c (feclearexcept): Add
libm_hidden_ver.
[BZ #3439]
* sysdeps/alpha/fpu/bits/fenv.h (FE_DENORMAL): Define macro to
integer constant usable in #if and use that to give value to enum

3
ports/ChangeLog.am33
View File

@ -1,5 +1,8 @@
2012-11-03 Joseph Myers <joseph@codesourcery.com>
* sysdeps/am33/fpu/fclrexcpt.c (feclearexcept): Add
libm_hidden_ver.
[BZ #3439]
* sysdeps/am33/fpu/bits/fenv.h (FE_INEXACT): Define macro to
integer constant usable in #if and use that to give value to enum

2
ports/ChangeLog.arm
View File

@ -1,5 +1,7 @@
2012-11-03 Joseph Myers <joseph@codesourcery.com>
* sysdeps/arm/fclrexcpt.c (feclearexcept): Add libm_hidden_ver.
[BZ #3439]
* sysdeps/arm/bits/fenv.h (FE_INVALID): Define macro to integer
constant usable in #if and use that to give value to enum

3
ports/ChangeLog.hppa
View File

@ -1,5 +1,8 @@
2012-11-03 Joseph Myers <joseph@codesourcery.com>
* sysdeps/hppa/fpu/fclrexcpt.c (feclearexcept): Add
libm_hidden_def.
[BZ #3439]
* sysdeps/hppa/fpu/bits/fenv.h (FE_INVALID): Define macro to
integer constant usable in #if and use that to give value to enum

3
ports/ChangeLog.ia64
View File

@ -1,5 +1,8 @@
2012-11-03 Joseph Myers <joseph@codesourcery.com>
* sysdeps/ia64/fpu/fclrexcpt.c (feclearexcept): Add
libm_hidden_def.
[BZ #3439]
* sysdeps/ia64/bits/fenv.h (FE_INEXACT): Define macro to integer
constant usable in #if and use that to give value to enum

3
ports/ChangeLog.m68k
View File

@ -1,5 +1,8 @@
2012-11-03 Joseph Myers <joseph@codesourcery.com>
* sysdeps/m68k/fpu/fclrexcpt.c (feclearexcept): Add
libm_hidden_ver.
[BZ #3439]
* sysdeps/m68k/fpu/bits/fenv.h (FE_INEXACT): Define macro to
integer constant usable in #if and use that to give value to enum

3
ports/ChangeLog.mips
View File

@ -1,5 +1,8 @@
2012-11-03 Joseph Myers <joseph@codesourcery.com>
* sysdeps/mips/fpu/fclrexcpt.c (feclearexcept): Add
libm_hidden_def.
[BZ #3439]
* sysdeps/mips/bits/fenv.h (FE_INEXACT): Define macro to integer
constant usable in #if and use that to give value to enum

5
ports/ChangeLog.powerpc
View File

@ -1,3 +1,8 @@
2012-11-03 Joseph Myers <joseph@codesourcery.com>
* sysdeps/powerpc/nofpu/fclrexcpt.c (feclearexcept): Add
libm_hidden_ver.
2012-10-31 Andreas Schwab <schwab@linux-m68k.org>
* sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/nptl/libc.abilist:

3
ports/sysdeps/alpha/fpu/fclrexcpt.c
View File

@ -1,5 +1,5 @@
/* Clear given exceptions in current floating-point environment.
Copyright (C) 1997,99,2000,01 Free Software Foundation, Inc.
Copyright (C) 1997-2012 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Richard Henderson <rth@tamu.edu>, 1997.
@ -43,4 +43,5 @@ strong_alias (__feclearexcept, __old_feclearexcept)
compat_symbol (libm, __old_feclearexcept, feclearexcept, GLIBC_2_1);
#endif
libm_hidden_ver (__feclearexcept, feclearexcept)
versioned_symbol (libm, __feclearexcept, feclearexcept, GLIBC_2_2);

3
ports/sysdeps/am33/fpu/fclrexcpt.c
View File

@ -1,5 +1,5 @@
/* Clear given exceptions in current floating-point environment.
Copyright (C) 1998, 1999, 2000, 2002, 2004 Free Software Foundation, Inc.
Copyright (C) 1998-2012 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Alexandre Oliva <aoliva@redhat.com>
based on corresponding file in the MIPS port.
@ -48,4 +48,5 @@ __feclearexcept (int excepts)
return 0;
}
libm_hidden_ver (__feclearexcept, feclearexcept)
versioned_symbol (libm, __feclearexcept, feclearexcept, GLIBC_2_2);

1
ports/sysdeps/arm/fclrexcpt.c
View File

@ -54,4 +54,5 @@ strong_alias (__feclearexcept, __old_feclearexcept)
compat_symbol (libm, __old_feclearexcept, feclearexcept, GLIBC_2_1);
#endif
libm_hidden_ver (__feclearexcept, feclearexcept)
versioned_symbol (libm, __feclearexcept, feclearexcept, GLIBC_2_2);

3
ports/sysdeps/hppa/fpu/fclrexcpt.c
View File

@ -1,5 +1,5 @@
/* Clear given exceptions in current floating-point environment.
Copyright (C) 2000 Free Software Foundation, Inc.
Copyright (C) 2000-2012 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by David Huggins-Daines <dhd@debian.org>, 2000
@ -33,3 +33,4 @@ feclearexcept (int excepts)
/* Success. */
return 0;
}
libm_hidden_def (feclearexcept)

3
ports/sysdeps/ia64/fpu/fclrexcpt.c
View File

@ -1,5 +1,5 @@
/* Clear given exceptions in current floating-point environment.
Copyright (C) 1997, 1999, 2000 Free Software Foundation, Inc.
Copyright (C) 1997-2012 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Christian Boissat <Christian.Boissat@cern.ch>, 1999 and
Jes Sorensen <Jes.Sorensen@cern.ch>, 2000
@ -36,3 +36,4 @@ feclearexcept (int excepts)
/* success */
return 0;
}
libm_hidden_def (feclearexcept)

3
ports/sysdeps/m68k/fpu/fclrexcpt.c
View File

@ -1,5 +1,5 @@
/* Clear given exceptions in current floating-point environment.
Copyright (C) 1997,99,2000,01 Free Software Foundation, Inc.
Copyright (C) 1997-2012 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
@ -46,4 +46,5 @@ strong_alias (__feclearexcept, __old_feclearexcept)
compat_symbol (libm, __old_feclearexcept, feclearexcept, GLIBC_2_1);
#endif
libm_hidden_ver (__feclearexcept, feclearexcept)
versioned_symbol (libm, __feclearexcept, feclearexcept, GLIBC_2_2);

3
ports/sysdeps/mips/fpu/fclrexcpt.c
View File

@ -1,5 +1,5 @@
/* Clear given exceptions in current floating-point environment.
Copyright (C) 1998, 1999, 2000, 2002 Free Software Foundation, Inc.
Copyright (C) 1998-2012 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Andreas Jaeger <aj@suse.de>, 1998.
@ -44,3 +44,4 @@ feclearexcept (int excepts)
/* Success. */
return 0;
}
libm_hidden_def (feclearexcept)

3
ports/sysdeps/powerpc/nofpu/fclrexcpt.c
View File

@ -1,5 +1,5 @@
/* Clear floating-point exceptions (soft-float edition).
Copyright (C) 2002 Free Software Foundation, Inc.
Copyright (C) 2002-2012 Free Software Foundation, Inc.
Contributed by Aldy Hernandez <aldyh@redhat.com>, 2002.
This file is part of the GNU C Library.
@ -33,4 +33,5 @@ strong_alias (__feclearexcept, __old_feclearexcept)
compat_symbol (libm, __old_feclearexcept, feclearexcept, GLIBC_2_1);
#endif
libm_hidden_ver (__feclearexcept, feclearexcept)
versioned_symbol (libm, __feclearexcept, feclearexcept, GLIBC_2_2);

16
sysdeps/generic/math_private.h
View File

@ -401,6 +401,22 @@ default_libc_feholdexcept (fenv_t *e)
# define libc_feholdexceptl default_libc_feholdexcept
#endif
static __always_inline void
default_libc_fesetround (int r)
{
(void) fesetround (r);
}
#ifndef libc_fesetround
# define libc_fesetround default_libc_fesetround
#endif
#ifndef libc_fesetroundf
# define libc_fesetroundf default_libc_fesetround
#endif
#ifndef libc_fesetroundl
# define libc_fesetroundl default_libc_fesetround
#endif
static __always_inline void
default_libc_feholdexcept_setround (fenv_t *e, int r)
{

3
sysdeps/i386/fpu/fclrexcpt.c
View File

@ -1,5 +1,5 @@
/* Clear given exceptions in current floating-point environment.
Copyright (C) 1997,99,2000, 2001, 2003, 2004 Free Software Foundation, Inc.
Copyright (C) 1997-2012 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
@ -65,4 +65,5 @@ strong_alias (__feclearexcept, __old_feclearexcept)
compat_symbol (libm, __old_feclearexcept, feclearexcept, GLIBC_2_1);
#endif
libm_hidden_ver (__feclearexcept, feclearexcept)
versioned_symbol (libm, __feclearexcept, feclearexcept, GLIBC_2_2);

23
sysdeps/i386/fpu/fenv_private.h
View File

@ -76,6 +76,24 @@ libc_feholdexcept_387 (fenv_t *e)
"st(4)", "st(5)", "st(6)", "st(7)");
}
static __always_inline void
libc_fesetround_sse (int r)
{
unsigned int mxcsr;
asm (STMXCSR " %0" : "=m" (*&mxcsr));
mxcsr = (mxcsr & ~0x6000) | (r << 3);
asm volatile (LDMXCSR " %0" : : "m" (*&mxcsr));
}
static __always_inline void
libc_fesetround_387 (int r)
{
fpu_control_t cw;
_FPU_GETCW (cw);
cw = (cw & ~0xc00) | r;
_FPU_SETCW (cw);
}
static __always_inline void
libc_feholdexcept_setround_sse (fenv_t *e, int r)
{
@ -247,6 +265,7 @@ libc_feresetround_387 (fenv_t *e)
#ifdef __SSE_MATH__
# define libc_feholdexceptf libc_feholdexcept_sse
# define libc_fesetroundf libc_fesetround_sse
# define libc_feholdexcept_setroundf libc_feholdexcept_setround_sse
# define libc_fetestexceptf libc_fetestexcept_sse
# define libc_fesetenvf libc_fesetenv_sse
@ -256,6 +275,7 @@ libc_feresetround_387 (fenv_t *e)
# define libc_feresetroundf libc_feresetround_sse
#else
# define libc_feholdexceptf libc_feholdexcept_387
# define libc_fesetroundf libc_fesetround_387
# define libc_feholdexcept_setroundf libc_feholdexcept_setround_387
# define libc_fetestexceptf libc_fetestexcept_387
# define libc_fesetenvf libc_fesetenv_387
@ -267,6 +287,7 @@ libc_feresetround_387 (fenv_t *e)
#ifdef __SSE2_MATH__
# define libc_feholdexcept libc_feholdexcept_sse
# define libc_fesetround libc_fesetround_sse
# define libc_feholdexcept_setround libc_feholdexcept_setround_sse
# define libc_fetestexcept libc_fetestexcept_sse
# define libc_fesetenv libc_fesetenv_sse
@ -276,6 +297,7 @@ libc_feresetround_387 (fenv_t *e)
# define libc_feresetround libc_feresetround_sse
#else
# define libc_feholdexcept libc_feholdexcept_387
# define libc_fesetround libc_fesetround_387
# define libc_feholdexcept_setround libc_feholdexcept_setround_387
# define libc_fetestexcept libc_fetestexcept_387
# define libc_fesetenv libc_fesetenv_387
@ -286,6 +308,7 @@ libc_feresetround_387 (fenv_t *e)
#endif /* __SSE2_MATH__ */
#define libc_feholdexceptl libc_feholdexcept_387
#define libc_fesetroundl libc_fesetround_387
#define libc_feholdexcept_setroundl libc_feholdexcept_setround_387
#define libc_fetestexceptl libc_fetestexcept_387
#define libc_fesetenvl libc_fesetenv_387

18
sysdeps/ieee754/dbl-64/s_fma.c
View File

@ -167,6 +167,9 @@ __fma (double x, double y, double z)
if (__builtin_expect ((x == 0 || y == 0) && z == 0, 0))
return x * y + z;
fenv_t env;
libc_feholdexcept_setround (&env, FE_TONEAREST);
/* Multiplication m1 + m2 = x * y using Dekker's algorithm. */
#define C ((1 << (DBL_MANT_DIG + 1) / 2) + 1)
double x1 = x * C;
@ -185,9 +188,20 @@ __fma (double x, double y, double z)
t1 = m1 - t1;
t2 = z - t2;
double a2 = t1 + t2;
feclearexcept (FE_INEXACT);
fenv_t env;
libc_feholdexcept_setround (&env, FE_TOWARDZERO);
/* If the result is an exact zero, ensure it has the correct
sign. */
if (a1 == 0 && m2 == 0)
{
libc_feupdateenv (&env);
/* Ensure that round-to-nearest value of z + m1 is not
reused. */
asm volatile ("" : "=m" (z) : "m" (z));
return z + m1;
}
libc_fesetround (FE_TOWARDZERO);
/* Perform m2 + a2 addition with round to odd. */
u.d = a2 + m2;

18
sysdeps/ieee754/ldbl-128/s_fmal.c
View File

@ -170,6 +170,10 @@ __fmal (long double x, long double y, long double z)
if (__builtin_expect ((x == 0 || y == 0) && z == 0, 0))
return x * y + z;
fenv_t env;
feholdexcept (&env);
fesetround (FE_TONEAREST);
/* Multiplication m1 + m2 = x * y using Dekker's algorithm. */
#define C ((1LL << (LDBL_MANT_DIG + 1) / 2) + 1)
long double x1 = x * C;
@ -188,9 +192,19 @@ __fmal (long double x, long double y, long double z)
t1 = m1 - t1;
t2 = z - t2;
long double a2 = t1 + t2;
feclearexcept (FE_INEXACT);
/* If the result is an exact zero, ensure it has the correct
sign. */
if (a1 == 0 && m2 == 0)
{
feupdateenv (&env);
/* Ensure that round-to-nearest value of z + m1 is not
reused. */
asm volatile ("" : "=m" (z) : "m" (z));
return z + m1;
}
fenv_t env;
feholdexcept (&env);
fesetround (FE_TOWARDZERO);
/* Perform m2 + a2 addition with round to odd. */
u.d = a2 + m2;

18
sysdeps/ieee754/ldbl-96/s_fma.c
View File

@ -42,6 +42,10 @@ __fma (double x, double y, double z)
if (__builtin_expect ((x == 0 || y == 0) && z == 0, 0))
return x * y + z;
fenv_t env;
feholdexcept (&env);
fesetround (FE_TONEAREST);
/* Multiplication m1 + m2 = x * y using Dekker's algorithm. */
#define C ((1ULL << (LDBL_MANT_DIG + 1) / 2) + 1)
long double x1 = (long double) x * C;
@ -60,9 +64,19 @@ __fma (double x, double y, double z)
t1 = m1 - t1;
t2 = z - t2;
long double a2 = t1 + t2;
feclearexcept (FE_INEXACT);
/* If the result is an exact zero, ensure it has the correct
sign. */
if (a1 == 0 && m2 == 0)
{
feupdateenv (&env);
/* Ensure that round-to-nearest value of z + m1 is not
reused. */
asm volatile ("" : "=m" (z) : "m" (z));
return z + m1;
}
fenv_t env;
feholdexcept (&env);
fesetround (FE_TOWARDZERO);
/* Perform m2 + a2 addition with round to odd. */
a2 = a2 + m2;

18
sysdeps/ieee754/ldbl-96/s_fmal.c
View File

@ -168,6 +168,10 @@ __fmal (long double x, long double y, long double z)
if (__builtin_expect ((x == 0 || y == 0) && z == 0, 0))
return x * y + z;
fenv_t env;
feholdexcept (&env);
fesetround (FE_TONEAREST);
/* Multiplication m1 + m2 = x * y using Dekker's algorithm. */
#define C ((1LL << (LDBL_MANT_DIG + 1) / 2) + 1)
long double x1 = x * C;
@ -186,9 +190,19 @@ __fmal (long double x, long double y, long double z)
t1 = m1 - t1;
t2 = z - t2;
long double a2 = t1 + t2;
feclearexcept (FE_INEXACT);
/* If the result is an exact zero, ensure it has the correct
sign. */
if (a1 == 0 && m2 == 0)
{
feupdateenv (&env);
/* Ensure that round-to-nearest value of z + m1 is not
reused. */
asm volatile ("" : "=m" (z) : "m" (z));
return z + m1;
}
fenv_t env;
feholdexcept (&env);
fesetround (FE_TOWARDZERO);
/* Perform m2 + a2 addition with round to odd. */
u.d = a2 + m2;

3
sysdeps/powerpc/fpu/fclrexcpt.c
View File

@ -1,5 +1,5 @@
/* Clear given exceptions in current floating-point environment.
Copyright (C) 1997,99,2000,01 Free Software Foundation, Inc.
Copyright (C) 1997-2012 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@ -44,4 +44,5 @@ strong_alias (__feclearexcept, __old_feclearexcept)
compat_symbol (libm, __old_feclearexcept, feclearexcept, GLIBC_2_1);
#endif
libm_hidden_ver (__feclearexcept, feclearexcept)
versioned_symbol (libm, __feclearexcept, feclearexcept, GLIBC_2_2);

3
sysdeps/s390/fpu/fclrexcpt.c
View File

@ -1,5 +1,5 @@
/* Clear given exceptions in current floating-point environment.
Copyright (C) 2000 Free Software Foundation, Inc.
Copyright (C) 2000-2012 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@ -37,3 +37,4 @@ feclearexcept (int excepts)
/* Success. */
return 0;
}
libm_hidden_def (feclearexcept)

1
sysdeps/sh/sh4/fpu/fclrexcpt.c
View File

@ -39,3 +39,4 @@ feclearexcept (int excepts)
return 0;
}
libm_hidden_def (feclearexcept)

3
sysdeps/sparc/fpu/fclrexcpt.c
View File

@ -1,5 +1,5 @@
/* Clear given exceptions in current floating-point environment.
Copyright (C) 1997, 1999, 2000 Free Software Foundation, Inc.
Copyright (C) 1997-2012 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@ -39,4 +39,5 @@ strong_alias (__feclearexcept, __old_feclearexcept)
compat_symbol (libm, __old_feclearexcept, feclearexcept, GLIBC_2_1);
#endif
libm_hidden_ver (__feclearexcept, feclearexcept)
versioned_symbol (libm, __feclearexcept, feclearexcept, GLIBC_2_2);

12
sysdeps/sparc/fpu/fenv_private.h
View File

@ -13,6 +13,15 @@ libc_feholdexcept (fenv_t *e)
__fenv_ldfsr(etmp);
}
static __always_inline void
libc_fesetround (int r)
{
fenv_t etmp;
__fenv_stfsr(etmp);
etmp = (etmp & ~__FE_ROUND_MASK) | (r);
__fenv_ldfsr(etmp);
}
static __always_inline void
libc_feholdexcept_setround (fenv_t *e, int r)
{
@ -79,6 +88,7 @@ libc_feresetround (fenv_t *e)
}
#define libc_feholdexceptf libc_feholdexcept
#define libc_fesetroundf libc_fesetround
#define libc_feholdexcept_setroundf libc_feholdexcept_setround
#define libc_fetestexceptf libc_fetestexcept
#define libc_fesetenvf libc_fesetenv
@ -87,6 +97,7 @@ libc_feresetround (fenv_t *e)
#define libc_feholdsetroundf libc_feholdsetround
#define libc_feresetroundf libc_feresetround
#define libc_feholdexcept libc_feholdexcept
#define libc_fesetround libc_fesetround
#define libc_feholdexcept_setround libc_feholdexcept_setround
#define libc_fetestexcept libc_fetestexcept
#define libc_fesetenv libc_fesetenv
@ -95,6 +106,7 @@ libc_feresetround (fenv_t *e)
#define libc_feholdsetround libc_feholdsetround
#define libc_feresetround libc_feresetround
#define libc_feholdexceptl libc_feholdexcept
#define libc_fesetroundl libc_fesetround
#define libc_feholdexcept_setroundl libc_feholdexcept_setround
#define libc_fetestexceptl libc_fetestexcept
#define libc_fesetenvl libc_fesetenv

3
sysdeps/x86_64/fpu/fclrexcpt.c
View File

@ -1,5 +1,5 @@
/* Clear given exceptions in current floating-point environment.
Copyright (C) 2001 Free Software Foundation, Inc.
Copyright (C) 2001-2012 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@ -49,3 +49,4 @@ feclearexcept (int excepts)
/* Success. */
return 0;
}
libm_hidden_def (feclearexcept)