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Add iseqsig.

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TS 18661-1 adds an iseqsig type-generic comparison macro to <math.h>.
This macro is like the == operator except that unordered operands
result in the "invalid" exception and errno being set to EDOM.

This patch implements this macro for glibc.  Given the need to set
errno, this is implemented with out-of-line functions __iseqsigf,
__iseqsig and __iseqsigl (of which the last only exists at all if long
double is ABI-distinct from double, so no function aliases or compat
support are needed).  The present patch ignores excess precision
issues; I intend to deal with those in a followup patch.  (Like
comparison operators, type-generic comparison macros should *not*
convert operands to their semantic types but should preserve excess
range and precision, meaning that for some argument types and values
of FLT_EVAL_METHOD, an underlying function should be called for a
wider type than that of the arguments.)

The underlying functions are implemented with the type-generic
template machinery.  Comparing x <= y && x >= y is sufficient in ISO C
to achieve an equality comparison with "invalid" raised for unordered
operands (and the results of those two comparisons can also be used to
tell whether errno needs to be set).  However, some architectures have
GCC bugs meaning that unordered comparison instructions are used
instead of ordered ones.  Thus, a mechanism is provided for
architectures to use an explicit call to feraiseexcept to raise
exceptions if required.  If your architecture has such a bug you
should add a fix-fp-int-compare-invalid.h header for it, with a
comment pointing to the relevant GCC bug report; if such a GCC bug is
fixed, that header's contents should have a __GNUC_PREREQ conditional
added so that the workaround can eventually be removed for that
architecture.

Tested for x86_64, x86, mips64, arm and powerpc.

	* math/math.h [__GLIBC_USE (IEC_60559_BFP_EXT)] (iseqsig): New
	macro.
	* math/bits/mathcalls.h [__GLIBC_USE (IEC_60559_BFP_EXT)]
	(__iseqsig): New declaration.
	* math/s_iseqsig_template.c: New file.
	* math/Versions (__iseqsigf): New libm symbol at version
	GLIBC_2.25.
	(__iseqsig): Likewise.
	(__iseqsigl): Likewise.
	* math/libm-test.inc (iseqsig_test_data): New array.
	(iseqsig_test): New function.
	(main): Call iseqsig_test.
	* math/Makefile (gen-libm-calls): Add s_iseqsigF.
	* manual/arith.texi (FP Comparison Functions): Document iseqsig.
	* manual/libm-err-tab.pl: Update comment on interfaces without
	ulps tabulated.
	* sysdeps/generic/fix-fp-int-compare-invalid.h: New file.
	* sysdeps/powerpc/fpu/fix-fp-int-compare-invalid.h: Likewise.
	* sysdeps/x86/fpu/fix-fp-int-compare-invalid.h: Likewise.
	* sysdeps/nacl/libm.abilist: Update.
	* sysdeps/unix/sysv/linux/aarch64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/alpha/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/arm/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/hppa/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/i386/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/ia64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/m68k/coldfire/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/m68k/m680x0/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/microblaze/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips32/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/nios2/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/libm-le.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sh/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/tile/tilepro/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist: Likewise.
This commit is contained in:
Joseph Myers 2016-10-06 22:19:38 +00:00
parent 36ee03e6a8
commit 1e7c8fcca5
40 changed files with 348 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

55
ChangeLog
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@ -1,3 +1,58 @@
2016-10-06 Joseph Myers <joseph@codesourcery.com>
* math/math.h [__GLIBC_USE (IEC_60559_BFP_EXT)] (iseqsig): New
macro.
* math/bits/mathcalls.h [__GLIBC_USE (IEC_60559_BFP_EXT)]
(__iseqsig): New declaration.
* math/s_iseqsig_template.c: New file.
* math/Versions (__iseqsigf): New libm symbol at version
GLIBC_2.25.
(__iseqsig): Likewise.
(__iseqsigl): Likewise.
* math/libm-test.inc (iseqsig_test_data): New array.
(iseqsig_test): New function.
(main): Call iseqsig_test.
* math/Makefile (gen-libm-calls): Add s_iseqsigF.
* manual/arith.texi (FP Comparison Functions): Document iseqsig.
* manual/libm-err-tab.pl: Update comment on interfaces without
ulps tabulated.
* sysdeps/generic/fix-fp-int-compare-invalid.h: New file.
* sysdeps/powerpc/fpu/fix-fp-int-compare-invalid.h: Likewise.
* sysdeps/x86/fpu/fix-fp-int-compare-invalid.h: Likewise.
* sysdeps/nacl/libm.abilist: Update.
* sysdeps/unix/sysv/linux/aarch64/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/alpha/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/arm/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/hppa/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/i386/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/ia64/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/m68k/coldfire/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/m68k/m680x0/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/microblaze/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/mips/mips32/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/mips/mips64/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/nios2/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libm.abilist:
Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libm.abilist:
Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/libm-le.abilist:
Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/libm.abilist:
Likewise.
* sysdeps/unix/sysv/linux/s390/s390-32/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/s390/s390-64/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/sh/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/sparc/sparc64/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/libm.abilist:
Likewise.
* sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/libm.abilist:
Likewise.
* sysdeps/unix/sysv/linux/tile/tilepro/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/x86_64/64/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist: Likewise.
2016-10-06 Siddhesh Poyarekar <siddhesh@sourceware.org>
* sysdeps/ieee754/dbl-64/s_sin.c (reduce_and_compute, do_sincos_1,

2
NEWS
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@ -51,6 +51,8 @@ Version 2.25
* New <math.h> features are added from TS 18661-1:2014:
- Comparison macros: iseqsig.
- Classification macros: iscanonical, issubnormal, iszero.
* The <sys/quota.h> header now includes the <linux/quota.h> header. Support

13
manual/arith.texi
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@ -1873,7 +1873,8 @@ undesirable. @w{ISO C99} therefore defines comparison functions that
do not raise exceptions when NaN is examined. All of the functions are
implemented as macros which allow their arguments to be of any
floating-point type. The macros are guaranteed to evaluate their
arguments only once.
arguments only once. TS 18661-1:2014 adds such a macro for an
equality comparison that @emph{does} raise an exception for a NaN argument.
@comment math.h
@comment ISO
@ -1932,6 +1933,16 @@ This macro determines whether its arguments are unordered. In other
words, it is true if @var{x} or @var{y} are NaN, and false otherwise.
@end deftypefn
@comment math.h
@comment ISO
@deftypefn Macro int iseqsig (@emph{real-floating} @var{x}, @emph{real-floating} @var{y})
@safety{@prelim{}@mtsafe{}@assafe{}@acsafe{}}
This macro determines whether its arguments are equal. It is
equivalent to @code{(@var{x}) == (@var{y})}, but it raises the invalid
exception and sets @code{errno} to @code{EDOM} is either argument is a
NaN.
@end deftypefn
Not all machines provide hardware support for these operations. On
machines that don't, the macros can be very slow. Therefore, you should
not use these functions when NaN is not a concern.

2
manual/libm-err-tab.pl
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@ -78,7 +78,7 @@ use vars qw (%results @all_floats %suffices @all_functions);
"scalbn", "sin", "sincos", "sinh", "sqrt", "tan", "tanh", "tgamma",
"trunc", "y0", "y1", "yn" );
# fpclassify, iscanonical, isnormal, isfinite, isinf, isnan, issignaling,
# issubnormal, iszero, signbit, isgreater, isgreaterequal, isless,
# issubnormal, iszero, signbit, iseqsig, isgreater, isgreaterequal, isless,
# islessequal, islessgreater, isunordered are not tabulated.
if ($#ARGV == 0) {

2
math/Makefile
View File

@ -51,7 +51,7 @@ gen-libm-calls = cargF conjF cimagF crealF cabsF s_cacosF \
k_casinhF s_csinhF k_casinhF s_csinhF s_catanhF s_catanF \
s_ctanF s_ctanhF s_cexpF s_clogF s_cprojF s_csqrtF \
s_cpowF s_clog10F s_fdimF s_nextdownF s_fmaxF s_fminF \
s_nanF
s_nanF s_iseqsigF
libm-calls = \
e_acosF e_acoshF e_asinF e_atan2F e_atanhF e_coshF e_expF e_fmodF \

2
math/Versions
View File

@ -216,6 +216,6 @@ libm {
}
GLIBC_2.25 {
fesetexcept; fetestexceptflag; fegetmode; fesetmode;
__iscanonicall;
__iscanonicall; __iseqsigf; __iseqsig; __iseqsigl;
}
}

3
math/bits/mathcalls.h
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@ -380,6 +380,9 @@ __END_NAMESPACE_C99
#endif
#if __GLIBC_USE (IEC_60559_BFP_EXT)
/* Test equality. */
__MATHDECL_1 (int, __iseqsig,, (_Mdouble_ __x, _Mdouble_ __y));
/* Test for signaling NaN. */
__MATHDECL_1 (int, __issignaling,, (_Mdouble_ __value))
__attribute__ ((__const__));

61
math/libm-test.inc
View File

@ -47,7 +47,7 @@
fabs, fdim, finite, floor, fma, fmax, fmin, fmod, fpclassify,
frexp, gamma, hypot,
ilogb, iscanonical, isfinite, isinf, isnan, isnormal, issignaling,
issubnormal, iszero, isless, islessequal, isgreater,
issubnormal, iszero, iseqsig, isless, islessequal, isgreater,
isgreaterequal, islessgreater, isunordered, j0, j1, jn,
ldexp, lgamma, log, log10, log1p, log2, logb,
modf, nearbyint, nextafter, nexttoward,
@ -8185,6 +8185,64 @@ iscanonical_test (void)
ALL_RM_TEST (iscanonical, 1, iscanonical_test_data, RUN_TEST_LOOP_f_b_tg, END);
}
static const struct test_ff_i_data iseqsig_test_data[] =
{
TEST_ff_i (iseqsig, minus_zero, minus_zero, 1, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_ff_i (iseqsig, minus_zero, plus_zero, 1, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_ff_i (iseqsig, minus_zero, (FLOAT) 1, 0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_ff_i (iseqsig, minus_zero, qnan_value, 0, NO_INEXACT_EXCEPTION|INVALID_EXCEPTION|ERRNO_EDOM),
TEST_ff_i (iseqsig, minus_zero, -qnan_value, 0, NO_INEXACT_EXCEPTION|INVALID_EXCEPTION|ERRNO_EDOM),
TEST_ff_i (iseqsig, minus_zero, snan_value, 0, NO_INEXACT_EXCEPTION|INVALID_EXCEPTION|ERRNO_EDOM),
TEST_ff_i (iseqsig, minus_zero, -snan_value, 0, NO_INEXACT_EXCEPTION|INVALID_EXCEPTION|ERRNO_EDOM),
TEST_ff_i (iseqsig, plus_zero, minus_zero, 1, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_ff_i (iseqsig, plus_zero, plus_zero, 1, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_ff_i (iseqsig, plus_zero, (FLOAT) 1, 0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_ff_i (iseqsig, plus_zero, qnan_value, 0, NO_INEXACT_EXCEPTION|INVALID_EXCEPTION|ERRNO_EDOM),
TEST_ff_i (iseqsig, plus_zero, -qnan_value, 0, NO_INEXACT_EXCEPTION|INVALID_EXCEPTION|ERRNO_EDOM),
TEST_ff_i (iseqsig, plus_zero, snan_value, 0, NO_INEXACT_EXCEPTION|INVALID_EXCEPTION|ERRNO_EDOM),
TEST_ff_i (iseqsig, plus_zero, -snan_value, 0, NO_INEXACT_EXCEPTION|INVALID_EXCEPTION|ERRNO_EDOM),
TEST_ff_i (iseqsig, (FLOAT) 1, minus_zero, 0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_ff_i (iseqsig, (FLOAT) 1, plus_zero, 0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_ff_i (iseqsig, (FLOAT) 1, (FLOAT) 1, 1, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_ff_i (iseqsig, (FLOAT) 1, qnan_value, 0, NO_INEXACT_EXCEPTION|INVALID_EXCEPTION|ERRNO_EDOM),
TEST_ff_i (iseqsig, (FLOAT) 1, -qnan_value, 0, NO_INEXACT_EXCEPTION|INVALID_EXCEPTION|ERRNO_EDOM),
TEST_ff_i (iseqsig, (FLOAT) 1, snan_value, 0, NO_INEXACT_EXCEPTION|INVALID_EXCEPTION|ERRNO_EDOM),
TEST_ff_i (iseqsig, (FLOAT) 1, -snan_value, 0, NO_INEXACT_EXCEPTION|INVALID_EXCEPTION|ERRNO_EDOM),
TEST_ff_i (iseqsig, qnan_value, minus_zero, 0, NO_INEXACT_EXCEPTION|INVALID_EXCEPTION|ERRNO_EDOM),
TEST_ff_i (iseqsig, -qnan_value, minus_zero, 0, NO_INEXACT_EXCEPTION|INVALID_EXCEPTION|ERRNO_EDOM),
TEST_ff_i (iseqsig, qnan_value, plus_zero, 0, NO_INEXACT_EXCEPTION|INVALID_EXCEPTION|ERRNO_EDOM),
TEST_ff_i (iseqsig, -qnan_value, plus_zero, 0, NO_INEXACT_EXCEPTION|INVALID_EXCEPTION|ERRNO_EDOM),
TEST_ff_i (iseqsig, qnan_value, (FLOAT) 1, 0, NO_INEXACT_EXCEPTION|INVALID_EXCEPTION|ERRNO_EDOM),
TEST_ff_i (iseqsig, -qnan_value, (FLOAT) 1, 0, NO_INEXACT_EXCEPTION|INVALID_EXCEPTION|ERRNO_EDOM),
TEST_ff_i (iseqsig, snan_value, minus_zero, 0, NO_INEXACT_EXCEPTION|INVALID_EXCEPTION|ERRNO_EDOM),
TEST_ff_i (iseqsig, -snan_value, minus_zero, 0, NO_INEXACT_EXCEPTION|INVALID_EXCEPTION|ERRNO_EDOM),
TEST_ff_i (iseqsig, snan_value, plus_zero, 0, NO_INEXACT_EXCEPTION|INVALID_EXCEPTION|ERRNO_EDOM),
TEST_ff_i (iseqsig, -snan_value, plus_zero, 0, NO_INEXACT_EXCEPTION|INVALID_EXCEPTION|ERRNO_EDOM),
TEST_ff_i (iseqsig, snan_value, (FLOAT) 1, 0, NO_INEXACT_EXCEPTION|INVALID_EXCEPTION|ERRNO_EDOM),
TEST_ff_i (iseqsig, -snan_value, (FLOAT) 1, 0, NO_INEXACT_EXCEPTION|INVALID_EXCEPTION|ERRNO_EDOM),
TEST_ff_i (iseqsig, qnan_value, qnan_value, 0, NO_INEXACT_EXCEPTION|INVALID_EXCEPTION|ERRNO_EDOM),
TEST_ff_i (iseqsig, qnan_value, -qnan_value, 0, NO_INEXACT_EXCEPTION|INVALID_EXCEPTION|ERRNO_EDOM),
TEST_ff_i (iseqsig, -qnan_value, qnan_value, 0, NO_INEXACT_EXCEPTION|INVALID_EXCEPTION|ERRNO_EDOM),
TEST_ff_i (iseqsig, -qnan_value, -qnan_value, 0, NO_INEXACT_EXCEPTION|INVALID_EXCEPTION|ERRNO_EDOM),
TEST_ff_i (iseqsig, snan_value, qnan_value, 0, NO_INEXACT_EXCEPTION|INVALID_EXCEPTION|ERRNO_EDOM),
TEST_ff_i (iseqsig, snan_value, -qnan_value, 0, NO_INEXACT_EXCEPTION|INVALID_EXCEPTION|ERRNO_EDOM),
TEST_ff_i (iseqsig, -snan_value, qnan_value, 0, NO_INEXACT_EXCEPTION|INVALID_EXCEPTION|ERRNO_EDOM),
TEST_ff_i (iseqsig, -snan_value, -qnan_value, 0, NO_INEXACT_EXCEPTION|INVALID_EXCEPTION|ERRNO_EDOM),
TEST_ff_i (iseqsig, qnan_value, snan_value, 0, NO_INEXACT_EXCEPTION|INVALID_EXCEPTION|ERRNO_EDOM),
TEST_ff_i (iseqsig, qnan_value, -snan_value, 0, NO_INEXACT_EXCEPTION|INVALID_EXCEPTION|ERRNO_EDOM),
TEST_ff_i (iseqsig, -qnan_value, snan_value, 0, NO_INEXACT_EXCEPTION|INVALID_EXCEPTION|ERRNO_EDOM),
TEST_ff_i (iseqsig, -qnan_value, -snan_value, 0, NO_INEXACT_EXCEPTION|INVALID_EXCEPTION|ERRNO_EDOM),
TEST_ff_i (iseqsig, snan_value, snan_value, 0, NO_INEXACT_EXCEPTION|INVALID_EXCEPTION|ERRNO_EDOM),
TEST_ff_i (iseqsig, snan_value, -snan_value, 0, NO_INEXACT_EXCEPTION|INVALID_EXCEPTION|ERRNO_EDOM),
TEST_ff_i (iseqsig, -snan_value, snan_value, 0, NO_INEXACT_EXCEPTION|INVALID_EXCEPTION|ERRNO_EDOM),
TEST_ff_i (iseqsig, -snan_value, -snan_value, 0, NO_INEXACT_EXCEPTION|INVALID_EXCEPTION|ERRNO_EDOM),
};
static void
iseqsig_test (void)
{
ALL_RM_TEST (iseqsig, 1, iseqsig_test_data, RUN_TEST_LOOP_ff_i_tg, END);
}
static const struct test_f_i_data isfinite_test_data[] =
{
TEST_f_b (isfinite, 0, 1, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
@ -12834,6 +12892,7 @@ main (int argc, char **argv)
fma_test ();
/* Comparison macros: */
iseqsig_test ();
isgreater_test ();
isgreaterequal_test ();
isless_test ();

18
math/math.h
View File

@ -531,6 +531,24 @@ extern int matherr (struct exception *__exc);
#endif
#if __GLIBC_USE (IEC_60559_BFP_EXT)
/* Return X == Y but raising "invalid" and setting errno if X or Y is
a NaN. */
# ifdef __NO_LONG_DOUBLE_MATH
# define iseqsig(x, y) \
(sizeof ((x) + (y)) == sizeof (float) \
? __iseqsigf ((x), (y)) \
: __iseqsig ((x), (y)))
# else
# define iseqsig(x, y) \
(sizeof ((x) + (y)) == sizeof (float) \
? __iseqsigf ((x), (y)) \
: sizeof ((x) + (y)) == sizeof (double) \
? __iseqsig ((x), (y)) \
: __iseqsigl ((x), (y)))
# endif
#endif
__END_DECLS

42
math/s_iseqsig_template.c Normal file
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@ -0,0 +1,42 @@
/* Test whether X == Y.
Copyright (C) 2016 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
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <errno.h>
#include <fenv.h>
#include <math.h>
#include <stdbool.h>
#include <fix-fp-int-compare-invalid.h>
int
M_DECL_FUNC (__iseqsig) (FLOAT x, FLOAT y)
{
/* Comparing <= and >= is sufficient to determine both whether X and
Y are equal, and whether they are unordered, while raising the
"invalid" exception if they are unordered. */
bool cmp1 = x <= y;
bool cmp2 = x >= y;
if (cmp1 && cmp2)
return 1;
else if (!cmp1 && !cmp2)
{
if (FIX_COMPARE_INVALID)
feraiseexcept (FE_INVALID);
__set_errno (EDOM);
}
return 0;
}

27
sysdeps/generic/fix-fp-int-compare-invalid.h Normal file
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@ -0,0 +1,27 @@
/* Fix for missing "invalid" exceptions from floating-point
comparisons. Generic version.
Copyright (C) 2016 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
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#ifndef FIX_FP_INT_COMPARE_INVALID_H
#define FIX_FP_INT_COMPARE_INVALID_H 1
/* Define this macro to 1 to work around ordered comparison operators
in C failing to raise the "invalid" exception for NaN operands. */
#define FIX_COMPARE_INVALID 0
#endif /* fix-fp-int-compare-invalid.h */

2
sysdeps/nacl/libm.abilist
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@ -380,6 +380,8 @@ GLIBC_2.24 nextup F
GLIBC_2.24 nextupf F
GLIBC_2.24 nextupl F
GLIBC_2.25 GLIBC_2.25 A
GLIBC_2.25 __iseqsig F
GLIBC_2.25 __iseqsigf F
GLIBC_2.25 fegetmode F
GLIBC_2.25 fesetexcept F
GLIBC_2.25 fesetmode F

28
sysdeps/powerpc/fpu/fix-fp-int-compare-invalid.h Normal file
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@ -0,0 +1,28 @@
/* Fix for missing "invalid" exceptions from floating-point
comparisons. PowerPC version.
Copyright (C) 2016 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
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#ifndef FIX_FP_INT_COMPARE_INVALID_H
#define FIX_FP_INT_COMPARE_INVALID_H 1
/* As of GCC 5, comparisons use unordered comparison instructions when
they should use ordered comparisons
<https://gcc.gnu.org/bugzilla/show_bug.cgi?id=58684>. */
#define FIX_COMPARE_INVALID 1
#endif /* fix-fp-int-compare-invalid.h */

3
sysdeps/unix/sysv/linux/aarch64/libm.abilist
View File

@ -411,6 +411,9 @@ GLIBC_2.24 nextup F
GLIBC_2.24 nextupf F
GLIBC_2.24 nextupl F
GLIBC_2.25 GLIBC_2.25 A
GLIBC_2.25 __iseqsig F
GLIBC_2.25 __iseqsigf F
GLIBC_2.25 __iseqsigl F
GLIBC_2.25 fegetmode F
GLIBC_2.25 fesetexcept F
GLIBC_2.25 fesetmode F

3
sysdeps/unix/sysv/linux/alpha/libm.abilist
View File

@ -421,6 +421,9 @@ GLIBC_2.24 nextup F
GLIBC_2.24 nextupf F
GLIBC_2.24 nextupl F
GLIBC_2.25 GLIBC_2.25 A
GLIBC_2.25 __iseqsig F
GLIBC_2.25 __iseqsigf F
GLIBC_2.25 __iseqsigl F
GLIBC_2.25 fegetmode F
GLIBC_2.25 fesetexcept F
GLIBC_2.25 fesetmode F

2
sysdeps/unix/sysv/linux/arm/libm.abilist
View File

@ -69,6 +69,8 @@ GLIBC_2.24 nextup F
GLIBC_2.24 nextupf F
GLIBC_2.24 nextupl F
GLIBC_2.25 GLIBC_2.25 A
GLIBC_2.25 __iseqsig F
GLIBC_2.25 __iseqsigf F
GLIBC_2.25 fegetmode F
GLIBC_2.25 fesetexcept F
GLIBC_2.25 fesetmode F

2
sysdeps/unix/sysv/linux/hppa/libm.abilist
View File

@ -381,6 +381,8 @@ GLIBC_2.24 nextup F
GLIBC_2.24 nextupf F
GLIBC_2.24 nextupl F
GLIBC_2.25 GLIBC_2.25 A
GLIBC_2.25 __iseqsig F
GLIBC_2.25 __iseqsigf F
GLIBC_2.25 fegetmode F
GLIBC_2.25 fesetexcept F
GLIBC_2.25 fesetmode F

3
sysdeps/unix/sysv/linux/i386/libm.abilist
View File

@ -424,6 +424,9 @@ GLIBC_2.24 nextupf F
GLIBC_2.24 nextupl F
GLIBC_2.25 GLIBC_2.25 A
GLIBC_2.25 __iscanonicall F
GLIBC_2.25 __iseqsig F
GLIBC_2.25 __iseqsigf F
GLIBC_2.25 __iseqsigl F
GLIBC_2.25 fegetmode F
GLIBC_2.25 fesetexcept F
GLIBC_2.25 fesetmode F

3
sysdeps/unix/sysv/linux/ia64/libm.abilist
View File

@ -353,6 +353,9 @@ GLIBC_2.24 nextupf F
GLIBC_2.24 nextupl F
GLIBC_2.25 GLIBC_2.25 A
GLIBC_2.25 __iscanonicall F
GLIBC_2.25 __iseqsig F
GLIBC_2.25 __iseqsigf F
GLIBC_2.25 __iseqsigl F
GLIBC_2.25 fegetmode F
GLIBC_2.25 fesetexcept F
GLIBC_2.25 fesetmode F

2
sysdeps/unix/sysv/linux/m68k/coldfire/libm.abilist
View File

@ -69,6 +69,8 @@ GLIBC_2.24 nextup F
GLIBC_2.24 nextupf F
GLIBC_2.24 nextupl F
GLIBC_2.25 GLIBC_2.25 A
GLIBC_2.25 __iseqsig F
GLIBC_2.25 __iseqsigf F
GLIBC_2.25 fegetmode F
GLIBC_2.25 fesetexcept F
GLIBC_2.25 fesetmode F

3
sysdeps/unix/sysv/linux/m68k/m680x0/libm.abilist
View File

@ -422,6 +422,9 @@ GLIBC_2.24 nextupf F
GLIBC_2.24 nextupl F
GLIBC_2.25 GLIBC_2.25 A
GLIBC_2.25 __iscanonicall F
GLIBC_2.25 __iseqsig F
GLIBC_2.25 __iseqsigf F
GLIBC_2.25 __iseqsigl F
GLIBC_2.25 fegetmode F
GLIBC_2.25 fesetexcept F
GLIBC_2.25 fesetmode F

2
sysdeps/unix/sysv/linux/microblaze/libm.abilist
View File

@ -380,6 +380,8 @@ GLIBC_2.24 nextup F
GLIBC_2.24 nextupf F
GLIBC_2.24 nextupl F
GLIBC_2.25 GLIBC_2.25 A
GLIBC_2.25 __iseqsig F
GLIBC_2.25 __iseqsigf F
GLIBC_2.25 fegetmode F
GLIBC_2.25 fesetexcept F
GLIBC_2.25 fesetmode F

2
sysdeps/unix/sysv/linux/mips/mips32/libm.abilist
View File

@ -382,6 +382,8 @@ GLIBC_2.24 nextup F
GLIBC_2.24 nextupf F
GLIBC_2.24 nextupl F
GLIBC_2.25 GLIBC_2.25 A
GLIBC_2.25 __iseqsig F
GLIBC_2.25 __iseqsigf F
GLIBC_2.25 fegetmode F
GLIBC_2.25 fesetexcept F
GLIBC_2.25 fesetmode F

3
sysdeps/unix/sysv/linux/mips/mips64/libm.abilist
View File

@ -413,6 +413,9 @@ GLIBC_2.24 nextup F
GLIBC_2.24 nextupf F
GLIBC_2.24 nextupl F
GLIBC_2.25 GLIBC_2.25 A
GLIBC_2.25 __iseqsig F
GLIBC_2.25 __iseqsigf F
GLIBC_2.25 __iseqsigl F
GLIBC_2.25 fegetmode F
GLIBC_2.25 fesetexcept F
GLIBC_2.25 fesetmode F

2
sysdeps/unix/sysv/linux/nios2/libm.abilist
View File

@ -380,6 +380,8 @@ GLIBC_2.24 nextup F
GLIBC_2.24 nextupf F
GLIBC_2.24 nextupl F
GLIBC_2.25 GLIBC_2.25 A
GLIBC_2.25 __iseqsig F
GLIBC_2.25 __iseqsigf F
GLIBC_2.25 fegetmode F
GLIBC_2.25 fesetexcept F
GLIBC_2.25 fesetmode F

3
sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libm.abilist
View File

@ -424,6 +424,9 @@ GLIBC_2.24 nextupl F
GLIBC_2.25 GLIBC_2.25 A
GLIBC_2.25 __fe_dfl_mode D 0x8
GLIBC_2.25 __iscanonicall F
GLIBC_2.25 __iseqsig F
GLIBC_2.25 __iseqsigf F
GLIBC_2.25 __iseqsigl F
GLIBC_2.25 fegetmode F
GLIBC_2.25 fesetexcept F
GLIBC_2.25 fesetmode F

3
sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libm.abilist
View File

@ -423,6 +423,9 @@ GLIBC_2.24 nextupl F
GLIBC_2.25 GLIBC_2.25 A
GLIBC_2.25 __fe_dfl_mode D 0x8
GLIBC_2.25 __iscanonicall F
GLIBC_2.25 __iseqsig F
GLIBC_2.25 __iseqsigf F
GLIBC_2.25 __iseqsigl F
GLIBC_2.25 fegetmode F
GLIBC_2.25 fesetexcept F
GLIBC_2.25 fesetmode F

3
sysdeps/unix/sysv/linux/powerpc/powerpc64/libm-le.abilist
View File

@ -418,6 +418,9 @@ GLIBC_2.24 nextupl F
GLIBC_2.25 GLIBC_2.25 A
GLIBC_2.25 __fe_dfl_mode D 0x8
GLIBC_2.25 __iscanonicall F
GLIBC_2.25 __iseqsig F
GLIBC_2.25 __iseqsigf F
GLIBC_2.25 __iseqsigl F
GLIBC_2.25 fegetmode F
GLIBC_2.25 fesetexcept F
GLIBC_2.25 fesetmode F

3
sysdeps/unix/sysv/linux/powerpc/powerpc64/libm.abilist
View File

@ -99,6 +99,9 @@ GLIBC_2.24 nextupl F
GLIBC_2.25 GLIBC_2.25 A
GLIBC_2.25 __fe_dfl_mode D 0x8
GLIBC_2.25 __iscanonicall F
GLIBC_2.25 __iseqsig F
GLIBC_2.25 __iseqsigf F
GLIBC_2.25 __iseqsigl F
GLIBC_2.25 fegetmode F
GLIBC_2.25 fesetexcept F
GLIBC_2.25 fesetmode F

3
sysdeps/unix/sysv/linux/s390/s390-32/libm.abilist
View File

@ -411,6 +411,9 @@ GLIBC_2.24 nextup F
GLIBC_2.24 nextupf F
GLIBC_2.24 nextupl F
GLIBC_2.25 GLIBC_2.25 A
GLIBC_2.25 __iseqsig F
GLIBC_2.25 __iseqsigf F
GLIBC_2.25 __iseqsigl F
GLIBC_2.25 fegetmode F
GLIBC_2.25 fesetexcept F
GLIBC_2.25 fesetmode F

3
sysdeps/unix/sysv/linux/s390/s390-64/libm.abilist
View File

@ -409,6 +409,9 @@ GLIBC_2.24 nextup F
GLIBC_2.24 nextupf F
GLIBC_2.24 nextupl F
GLIBC_2.25 GLIBC_2.25 A
GLIBC_2.25 __iseqsig F
GLIBC_2.25 __iseqsigf F
GLIBC_2.25 __iseqsigl F
GLIBC_2.25 fegetmode F
GLIBC_2.25 fesetexcept F
GLIBC_2.25 fesetmode F

2
sysdeps/unix/sysv/linux/sh/libm.abilist
View File

@ -381,6 +381,8 @@ GLIBC_2.24 nextup F
GLIBC_2.24 nextupf F
GLIBC_2.24 nextupl F
GLIBC_2.25 GLIBC_2.25 A
GLIBC_2.25 __iseqsig F
GLIBC_2.25 __iseqsigf F
GLIBC_2.25 fegetmode F
GLIBC_2.25 fesetexcept F
GLIBC_2.25 fesetmode F

3
sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist
View File

@ -414,6 +414,9 @@ GLIBC_2.24 nextup F
GLIBC_2.24 nextupf F
GLIBC_2.24 nextupl F
GLIBC_2.25 GLIBC_2.25 A
GLIBC_2.25 __iseqsig F
GLIBC_2.25 __iseqsigf F
GLIBC_2.25 __iseqsigl F
GLIBC_2.25 fegetmode F
GLIBC_2.25 fesetexcept F
GLIBC_2.25 fesetmode F

3
sysdeps/unix/sysv/linux/sparc/sparc64/libm.abilist
View File

@ -412,6 +412,9 @@ GLIBC_2.24 nextup F
GLIBC_2.24 nextupf F
GLIBC_2.24 nextupl F
GLIBC_2.25 GLIBC_2.25 A
GLIBC_2.25 __iseqsig F
GLIBC_2.25 __iseqsigf F
GLIBC_2.25 __iseqsigl F
GLIBC_2.25 fegetmode F
GLIBC_2.25 fesetexcept F
GLIBC_2.25 fesetmode F

2
sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/libm.abilist
View File

@ -381,6 +381,8 @@ GLIBC_2.24 nextup F
GLIBC_2.24 nextupf F
GLIBC_2.24 nextupl F
GLIBC_2.25 GLIBC_2.25 A
GLIBC_2.25 __iseqsig F
GLIBC_2.25 __iseqsigf F
GLIBC_2.25 fegetmode F
GLIBC_2.25 fesetexcept F
GLIBC_2.25 fesetmode F

2
sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/libm.abilist
View File

@ -381,6 +381,8 @@ GLIBC_2.24 nextup F
GLIBC_2.24 nextupf F
GLIBC_2.24 nextupl F
GLIBC_2.25 GLIBC_2.25 A
GLIBC_2.25 __iseqsig F
GLIBC_2.25 __iseqsigf F
GLIBC_2.25 fegetmode F
GLIBC_2.25 fesetexcept F
GLIBC_2.25 fesetmode F

2
sysdeps/unix/sysv/linux/tile/tilepro/libm.abilist
View File

@ -381,6 +381,8 @@ GLIBC_2.24 nextup F
GLIBC_2.24 nextupf F
GLIBC_2.24 nextupl F
GLIBC_2.25 GLIBC_2.25 A
GLIBC_2.25 __iseqsig F
GLIBC_2.25 __iseqsigf F
GLIBC_2.25 fegetmode F
GLIBC_2.25 fesetexcept F
GLIBC_2.25 fesetmode F

3
sysdeps/unix/sysv/linux/x86_64/64/libm.abilist
View File

@ -413,6 +413,9 @@ GLIBC_2.24 nextupf F
GLIBC_2.24 nextupl F
GLIBC_2.25 GLIBC_2.25 A
GLIBC_2.25 __iscanonicall F
GLIBC_2.25 __iseqsig F
GLIBC_2.25 __iseqsigf F
GLIBC_2.25 __iseqsigl F
GLIBC_2.25 fegetmode F
GLIBC_2.25 fesetexcept F
GLIBC_2.25 fesetmode F

3
sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist
View File

@ -412,6 +412,9 @@ GLIBC_2.24 nextupf F
GLIBC_2.24 nextupl F
GLIBC_2.25 GLIBC_2.25 A
GLIBC_2.25 __iscanonicall F
GLIBC_2.25 __iseqsig F
GLIBC_2.25 __iseqsigf F
GLIBC_2.25 __iseqsigl F
GLIBC_2.25 fegetmode F
GLIBC_2.25 fesetexcept F
GLIBC_2.25 fesetmode F

28
sysdeps/x86/fpu/fix-fp-int-compare-invalid.h Normal file
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@ -0,0 +1,28 @@
/* Fix for missing "invalid" exceptions from floating-point
comparisons. x86 version.
Copyright (C) 2016 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
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#ifndef FIX_FP_INT_COMPARE_INVALID_H
#define FIX_FP_INT_COMPARE_INVALID_H 1
/* As of GCC 5, both x87 and SSE comparisons use unordered comparison
instructions when they should use ordered comparisons
<https://gcc.gnu.org/bugzilla/show_bug.cgi?id=52451>. */
#define FIX_COMPARE_INVALID 1
#endif /* fix-fp-int-compare-invalid.h */