Bruno Haible [Sun, 5 Nov 2023 22:25:08 +0000 (23:25 +0100)]
fenv-exceptions-tracking-c99: Fix test failures on Minix.
* m4/fenv-exceptions-tracking.m4 (gl_FENV_EXCEPTIONS_TRACKING): On
Minix, set REPLACE_FECLEAREXCEPT and REPLACE_FETESTEXCEPT to 1.
* doc/posix-functions/feclearexcept.texi: Mention the Minix bug.
* doc/posix-functions/fetestexcept.texi: Likewise.
Bruno Haible [Sun, 5 Nov 2023 21:16:38 +0000 (22:16 +0100)]
fenv-exceptions-state: Fix test failure on Haiku/i386 and Haiku/x86_64.
* m4/fenv-exceptions-state.m4 (gl_FENV_EXCEPTIONS_STATE): Arrange to
override fesetexceptflag() on Haiku.
* doc/posix-functions/fesetexceptflag.texi: Mention the Haiku bug.
Bruno Haible [Sun, 5 Nov 2023 14:21:06 +0000 (15:21 +0100)]
fenv-environment: Add tests.
* tests/test-fenv-env-1.c: New file.
* tests/test-fenv-env-2.c: New file.
* tests/test-fenv-env-3.c: New file.
* tests/test-fenv-env-4.c: New file.
* tests/test-fenv-env-5.sh: New file.
* tests/test-fenv-env-5.c: New file.
* modules/fenv-environment-tests: New file.
Bruno Haible [Sun, 5 Nov 2023 14:00:29 +0000 (15:00 +0100)]
fenv-environment: New module.
* lib/fenv.in.h (fenv_t) [hppa]: Remove the __exception field.
(FE_DFL_ENV): Override if <fenv.h> exists but HAVE_FE_DFL_ENV is not
defined.
(fegetenv, fesetenv, feupdateenv, feholdexcept): New declarations.
* lib/fenv-env.c: New file, based on glibc.
* lib/fenv-env-hold.c: New file.
* lib/fenv-env-update.c: New file.
* m4/fenv-environment.m4: New file.
* m4/mathfunc.m4 (gl_MATHFUNC): Handle also the 'fenv_t *' type.
* m4/fenv_h.m4 (gl_FENV_H_DEFAULTS): Initialize REPLACE_FEGETENV,
REPLACE_FEHOLDEXCEPT, REPLACE_FESETENV, REPLACE_FEUPDATEENV.
* modules/fenv (Makefile.am): Substitute REPLACE_FEGETENV,
REPLACE_FEHOLDEXCEPT, REPLACE_FESETENV, REPLACE_FEUPDATEENV.
* modules/fenv-environment: New file.
* doc/posix-functions/fegetenv.texi: Mention the new module and the bugs
on glibc, macOS, AIX.
* doc/posix-functions/feholdexcept.texi: Mention the new module and the
bugs on glibc, musl libc, FreeBSD, AIX, mingw, MSVC.
* doc/posix-functions/fesetenv.texi: Mention the new module and the bugs
on musl libc, FreeBSD, NetBSD, AIX, Solaris, Cygwin, mingw, MSVC.
* doc/posix-functions/feupdateenv.texi: Mention the new module and the
bugs on glibc, musl libc, macOS, FreeBSD, AIX, Solaris, mingw, MSVC.
* tests/test-fenv-except-tracking-3.sh: Test not only FE_INVALID, but
also FE_DIVBYZERO, FE_OVERFLOW, FE_UNDERFLOW, FE_INEXACT.
* tests/test-fenv-except-tracking-3.c: Include <stdlib.h>, <string.h>.
Don't include fpe-trapping.h. Assume HAVE_FPE_TRAPPING is 1.
(main): Receive the exception to test as first argument.
Bruno Haible [Sat, 4 Nov 2023 15:54:43 +0000 (16:54 +0100)]
fenv-exceptions-trapping: Fix for powerpc* platforms.
* lib/fenv-except-trapping.c (feenableexcept, fedisableexcept)
[powerpc]: Use the correct bit mask for the trap bits.
* tests/test-fenv-except-trapping-2.c (main): Reenable the '9' tests on
powerpc platforms.
Bruno Haible [Sat, 4 Nov 2023 15:37:02 +0000 (16:37 +0100)]
fenv-exceptions-state-c99: Fix compilation error on FreeBSD.
* lib/fenv.in.h (fegetexceptflag, fesetexceptflag): On FreeBSD, use an
rpl_ prefix, to avoid a conflict with an inline definition in FreeBSD's
<fenv.h>.
Bruno Haible [Sat, 4 Nov 2023 13:31:37 +0000 (14:31 +0100)]
fenv-exceptions-tracking-c99: Work around a NetBSD/x86_64 bug.
* m4/fenv-exceptions-tracking.m4 (gl_FENV_EXCEPTIONS_TRACKING): On
NetBSD/x86_64, set REPLACE_FETESTEXCEPT to 1.
* doc/posix-functions/fetestexcept.texi: Document the NetBSD bug.
Bruno Haible [Sat, 4 Nov 2023 13:18:28 +0000 (14:18 +0100)]
fenv-rounding: Avoid a test failure on NetBSD/sparc64.
* tests/test-fenv-round.c (test_towardzero, test_upward, test_downward):
Skip the 'long double' tests on NetBSD/sparc64.
* doc/posix-functions/fesetround.texi: Mention the problem with
'long double' operations on some platforms.
Bruno Haible [Sat, 4 Nov 2023 13:07:22 +0000 (14:07 +0100)]
fenv-rounding: Improve code for MSVC.
* lib/fenv-round.c (fegetround) [MSVC]: Use the rounding direction from
the SSE unit. Don't assume stable values for FE_UPWARD and FE_DOWNWARD.
(fesetround) [MSVC]: Set the rounding direction only in the SSE unit.
Don't assume stable values for FE_UPWARD and FE_DOWNWARD.
Bruno Haible [Tue, 31 Oct 2023 20:54:49 +0000 (21:54 +0100)]
fenv-exceptions-trapping: Add tests.
* tests/test-fenv-except-trapping-1.c: New file.
* tests/test-fenv-except-trapping-2.sh: New file.
* tests/test-fenv-except-trapping-2.c: New file.
* modules/fenv-exceptions-trapping-tests: New file.
Bruno Haible [Tue, 31 Oct 2023 20:46:13 +0000 (21:46 +0100)]
fenv-exceptions-trapping: New module.
* lib/fenv.in.h (feenableexcept, fedisableexcept, fegetexcept): New
declarations.
* lib/fenv-except-trapping.c: New file, based on glibc.
* m4/fenv_h.m4 (gl_FENV_H): Test also whether fegetexcept is declared.
* m4/fenv-exceptions-trapping.m4: New file.
* modules/fenv-exceptions-trapping: New file.
* doc/glibc-functions/fegetexcept.texi: Mention the new module.
* doc/glibc-functions/fedisableexcept.texi: Likewise.
* doc/glibc-functions/feenableexcept.texi: Likewise. Mention the glibc,
macOS, FreeBSD bugs.
Bruno Haible [Mon, 30 Oct 2023 15:49:25 +0000 (16:49 +0100)]
fenv-exceptions-state-c23: New module.
* lib/fenv.in.h (fetestexceptflag): New declaration.
* lib/fenv-except-state-test.c: New file, based on glibc.
* m4/fenv-exceptions-state-c23.m4: New file.
* modules/fenv-exceptions-state-c23: New file.
* doc/posix-functions/fetestexceptflag.texi: Mention the new module.
Bruno Haible [Mon, 30 Oct 2023 15:39:19 +0000 (16:39 +0100)]
fenv-exceptions-state-c99: New module.
* lib/fenv.in.h (fegetexceptflag, fesetexceptflag): New declarations.
* lib/fenv-except-state-get.c: New file, baed on glibc.
* lib/fenv-except-state-set.c: New file, baed on glibc.
* m4/mathfunc.m4 (gl_MATHFUNC): Handle also the 'fexcept_t *' type.
* m4/fenv-exceptions-state.m4: New file.
* modules/fenv-exceptions-state-c99: New file.
* doc/posix-functions/fegetexceptflag.texi: Mention the new module.
* doc/posix-functions/fesetexceptflag.texi: Mention the new module and
the glibc, musl libc, macOS, AIX, mingw bugs.
Bruno Haible [Mon, 30 Oct 2023 15:32:30 +0000 (16:32 +0100)]
fenv-exceptions-tracking-{c99,c23}: Fix the x86_64 and i386 case.
* lib/fenv-except-tracking-clear.c (feclearexcept): Make sure to restore
the exception trap bits in all cases.
* lib/fenv-except-tracking-raise.c (feraiseexcept): Likewise.
* lib/fenv-except-tracking-set.c (fesetexcept): Likewise.
Bruno Haible [Sun, 29 Oct 2023 21:27:38 +0000 (22:27 +0100)]
fenv-exceptions-tracking-c23: Add tests.
* tests/test-fenv-except-tracking-4.c: New file.
* tests/test-fenv-except-tracking-5.c: New file.
* modules/fenv-exceptions-tracking-c23-tests: New file.
Bruno Haible [Sun, 29 Oct 2023 21:20:02 +0000 (22:20 +0100)]
fenv-exceptions-tracking-c23: New module.
* lib/fenv.in.h (fesetexcept): New declaration.
* lib/fenv-except-tracking-set.c: New file, based on glibc.
* lib/fenv-private.h (_GETMSR, _SETMSR, MSR_FP_EXC_MASK, PR_SET_FPEXC,
PR_FP_EXC_DISABLED, PR_FP_EXC_NONRECOV, PR_FP_EXC_ASYNC,
PR_FP_EXC_PRECISE, prctl) [NetBSD/powerpc]: New macros.
* m4/fenv-exceptions-tracking-c23.m4: New file.
* modules/fenv-exceptions-tracking-c23: New file.
* doc/posix-functions/fesetexcept.texi: Mention the new module and the
glibc bugs.
Bruno Haible [Sat, 28 Oct 2023 16:42:47 +0000 (18:42 +0200)]
fpe-trapping: Always clear the FE_INVALID exception flag first.
* lib/fpe-trapping.h: Include <fenv.h> on all platforms.
(sigfpe_on_invalid) [AIX, HP-UX, IRIX, Solaris] : Clear the FE_INVALID
exception flag first.
* modules/fpe-trapping (Depends-on): Add fenv-exceptions-tracking-c99.
Bruno Haible [Sat, 28 Oct 2023 16:39:32 +0000 (18:39 +0200)]
fenv-exceptions-tracking-c99: Add tests.
* tests/test-fenv-except-tracking-1.c: New file.
* tests/test-fenv-except-tracking-2.sh: New file.
* tests/test-fenv-except-tracking-2.c: New file.
* tests/test-fenv-except-tracking-3.sh: New file.
* tests/test-fenv-except-tracking-3.c: New file.
* modules/fenv-exceptions-tracking-c99-tests: New file.
Bruno Haible [Sat, 28 Oct 2023 16:31:22 +0000 (18:31 +0200)]
fenv-exceptions-tracking-c99: New module.
* lib/fenv.in.h (feclearexcept, feraiseexcept, fetestexcept): New
declarations.
* lib/fenv-except-tracking-clear.c: New file, based on glibc.
* lib/fenv-except-tracking-raise.c: New file, based on glibc.
* lib/fenv-except-tracking-test.c: New file, based on glibc.
* m4/fenv-exceptions-tracking.m4: New file.
* m4/fenv-exceptions.m4: New file.
* modules/fenv-exceptions-tracking-c99: New file.
* doc/posix-functions/feclearexcept.texi: Mention the new module.
* doc/posix-functions/fetestexcept.texi: Likewise.
* doc/posix-functions/feraiseexcept.texi: Likewise. Mention the glibc
and Cygwin bugs.
Bruno Haible [Fri, 27 Oct 2023 18:16:50 +0000 (20:16 +0200)]
fenv-rounding: New module.
* lib/fenv.in.h (fegetround, fesetround): New declarations.
* lib/fenv-private.h: New file, based on glibc.
* lib/fenv-round.c: New file, based on glibc.
* m4/mathfunc.m4 (gl_MATHFUNC): Handle also the type fp_rnd.
* m4/fenv-rounding.m4: New file.
* modules/fenv (Depends-on): Add snippet/c++defs.
(Makefile.am): Substitute $(CXXDEFS_H) into fenv.h.
* modules/fenv-rounding: New file.
* doc/posix-functions/fegetround.texi: Mention the new module.
* doc/posix-functions/fesetround.texi: Likewise.
Pádraig Brady [Thu, 26 Oct 2023 15:25:03 +0000 (16:25 +0100)]
base32, base64: disallow non-canonical encodings
Unconditionally disallow encodings that don't have
appropriate zero bits before padding characters.
This handles one class of encoding variations discussed at:
https://eprint.iacr.org/2022/361.pdf
Note the other variations discussed there, due to optional
padding characters are already disallowed.
* lib/base32.c: Check that discarded bits in the encoding are zero.
* lib/base64.c: Likewise.
* tests/test-base32.c: Add test cases.
* tests/test-base64.c: Likewise.
Paul Eggert [Wed, 25 Oct 2023 21:14:15 +0000 (14:14 -0700)]
base32: new function isubase32; also, tune.
* lib/base32.c (BASE32_INLINE): Define.
(base32_to_int): Rename from b32 and make it extern. All uses changed.
(uchar_in_range): Remove. All uses removed.
(isbase32, base32_decode_ctx_init):
Move to lib/base32.h and make inline.
* lib/base32.h: Ignore -Wtype-limits, so that we needn’t
worry about uchar_in_range.
(BASE32_INLINE): Define, and use _GL_INLINE_HEADER_BEGIN.
(isubase32): New function, useful as it as a different signature.
(isbase32): Define in terms of isubase32.
* modules/base32 (Depends-on): Add extern-inline.
Paul Eggert [Wed, 25 Oct 2023 21:00:40 +0000 (14:00 -0700)]
base64: new function isubase64; also, tune.
* lib/base64.c (BASE64_INLINE): Define.
(base64_to_int): Rename from b64 and make it extern. All uses changed.
(uchar_in_range): Remove. All uses removed.
(isbase64, base64_decode_ctx_init):
Move to lib/base64.h and make inline.
* lib/base64.h: Ignore -Wtype-limits, so that we needn’t
worry about uchar_in_range.
(BASE64_INLINE): Define, and use _GL_INLINE_HEADER_BEGIN.
(isubase64): New function, useful as it as a different signature.
(isbase64): Define in terms of isubase64.
* modules/base64 (Depends-on): Add extern-inline.
Paul Eggert [Wed, 25 Oct 2023 01:37:37 +0000 (18:37 -0700)]
isnanl-tests, stdio-tests: pacify GCC -Wshadow
* tests/test-isnanl.h (NWORDS): Remove.
(memory_long_double): Do not redefine in an inner scope.
All uses changed to use the snan.h memory_long_double.
* tests/test-stdio.c (NWORDS): Remove.
(memory_long_double): Do not redefine in an inner scope.
The snan.h memory_long_double is fine here.
Bruno Haible [Sun, 15 Oct 2023 21:03:59 +0000 (23:03 +0200)]
pthread-spin: Fix warnings on FreeBSD 5.2.1/i386.
* lib/pthread.in.h (pthread_spinlock_t): Override if <pthread.h> defines
pthread_spinlock_t but we need to approximate spinlocks with mutexes.
* m4/pthread-spin.m4 (gl_PTHREAD_SPIN): When the pthread_spin_*
functions are declared but don't exist, mark them as REPLACEd.
Bruno Haible [Sun, 15 Oct 2023 20:00:04 +0000 (22:00 +0200)]
pthread-spin: Fix link errors on FreeBSD 5.2.1/i386.
* m4/pthread-spin.m4 (gl_PTHREAD_SPIN): Test not only whether
<pthread.h> defines the pthread_spinlock_t type, but also whether the
function pthread_spin_init is actually defined.
Bruno Haible [Sun, 15 Oct 2023 19:57:26 +0000 (21:57 +0200)]
pthread_mutex_timedlock: Fix link errors on FreeBSD 5.2.1/i386.
* m4/pthread_mutex_timedlock.m4 (gl_FUNC_PTHREAD_MUTEX_TIMEDLOCK): Test
not only whether pthread_mutex_timedlock is declared, but also whether
it is actually defined.
Bruno Haible [Sun, 15 Oct 2023 17:10:29 +0000 (19:10 +0200)]
lock: Make Autoconf macro more robust.
* m4/pthread_rwlock_rdlock.m4 (gl_PTHREAD_RWLOCK_RDLOCK_PREFER_WRITER):
Require gl_THREADLIB, not gl_THREADLIB_EARLY. Needed to get the value of
LIBMULTITHREAD.
Bruno Haible [Sat, 14 Oct 2023 19:50:49 +0000 (21:50 +0200)]
totalorder*: Fix test failures on SH4.
* lib/snan.h: Update comment.
* lib/totalorderf.c (totalorderf): On sh4, invert bit 22 before
comparing two NaNs.
* lib/totalorder.c (totalorder): On sh4, invert bit 51 before comparing
two NaNs.
* lib/totalorderl.c (totalorderl): On sh4, invert bit 51 or 47 of the
xhi, yhi parts before comparing two NaNs.
Bruno Haible [Sat, 14 Oct 2023 18:48:13 +0000 (20:48 +0200)]
totalorder*: Fix test failures on PA-RISC and MIPS CPUs.
* lib/totalorderf.c (totalorderf): On hppa and mips, invert bit 22
before comparing two NaNs.
* lib/totalorder.c (totalorder): On hppa and mips, invert bit 51 before
comparing two NaNs.
* lib/totalorderl.c: Include <float.h>.
(totalorderl): On hppa and mips, invert bit 51 or 47 of the xhi, yhi
parts before comparing two NaNs.
* modules/totalorderl (Depends-on): Add 'float'.
Bruno Haible [Sat, 14 Oct 2023 18:43:47 +0000 (20:43 +0200)]
totalorder* tests: Test also the signalling NaNs.
* tests/test-totalorder.h: Include signed-snan.h.
(main): Change the array initializer to contain memory_* objects rather
than floating-point numbers. This is needed for i386 and x86_64 CPUs.
* tests/test-totalorder.c (TOTALORDER_TYPE): Use memory_double.
(TOTALORDER_HAVE_SNAN, TOTALORDER_POSITIVE_SNAN,
TOTALORDER_NEGATIVE_SNAN): New macros.
* tests/test-totalorderf.c (TOTALORDER_TYPE): Use memory_float.
(TOTALORDER_HAVE_SNAN, TOTALORDER_POSITIVE_SNAN,
TOTALORDER_NEGATIVE_SNAN): New macros.
* tests/test-totalorderl.c (TOTALORDER_TYPE): Use memory_long_double.
(TOTALORDER_HAVE_SNAN, TOTALORDER_POSITIVE_SNAN,
TOTALORDER_NEGATIVE_SNAN): New macros.
* modules/totalorder-tests (Depends-on): Add signed-snan.
* modules/totalorderf-tests (Depends-on): Likewise.
* modules/totalorderl-tests (Depends-on): Likewise.
Bruno Haible [Sat, 14 Oct 2023 18:43:39 +0000 (20:43 +0200)]
totalorder* tests: Verify also the function signatures.
* tests/test-totalorder.h: New file, based on tests/test-totalorder.c.
* tests/test-totalorder.c: Check the signature. Include
test-totalorder.h for the rest.
* tests/test-totalorderf.c: Include <config.h>, <math.h>. Check the
signature. Include test-totalorder.h instead of test-totalorder.c.
* tests/test-totalorderl.c: Likewise.
* modules/totalorder-tests (Files): Add test-totalorder.h, signature.h.
* modules/totalorderf-tests (Files): Add test-totalorder.h, signature.h.
Remove test-totalorder.c.
* modules/totalorderl-tests (Files): Likewise.
Bruno Haible [Sat, 14 Oct 2023 10:34:25 +0000 (12:34 +0200)]
snan: Fix the value of SNaNl() on i386, x86_64, ia64 CPUs.
* lib/snan.h (construct_SNaNl): On i386, x86_64, ia64 CPUs, invert
bit 62, not bit 63, of the mantissa.
* m4/snan.m4 (gl_SNAN): Require gl_LONG_DOUBLE_VS_DOUBLE.
* modules/snan (Files): Add m4/math_h.m4.
Bruno Haible [Fri, 13 Oct 2023 11:54:58 +0000 (13:54 +0200)]
tests: Make use of signed signalling NaNs.
* tests/test-signbit.c: Include signed-snan.h instead of snan.h.
(test_signbitf): Test positive_SNaNf, negative_SNaNf, instead of only
SNaNf.
(test_signbitd): Test positive_SNaNd, negative_SNaNd, instead of only
SNaNd.
(test_signbitl): Test positive_SNaNl, negative_SNaNl, instead of only
SNaNl.
* tests/test-stdio.c: Include signed-snan.h instead of snan.h.
(main): Test positive_SNaNd, negative_SNaNd, instead of only SNaNd.
Also, test positive_NaNd, negative_NaNd, instead of NaNd.
* modules/signbit-tests (Depends-on): Add signed-snan. Remove snan.
* modules/stdio-tests (Depends-on): Likewise.
Bruno Haible [Fri, 13 Oct 2023 11:46:17 +0000 (13:46 +0200)]
signed-snan: New module.
* lib/snan.h (construct_SNaNf): New function, extracted from SNaNf.
(SNaNf): Use it.
(construct_SNaNd): New function, extracted from SNaNd.
(SNaNd): Use it.
(construct_SNaNl): New function, extracted from SNaNl.
(SNaNl): Use it.
* lib/signed-snan.h: New file.
* modules/signed-snan: New file.
Bruno Haible [Thu, 12 Oct 2023 23:04:27 +0000 (01:04 +0200)]
nan, snan tests: Avoid test failures.
* tests/test-nan-1.c (main): Special handling of arm CPUs with software
floating-point emulation.
* tests/test-snan-1.c (main): Likewise. Disable tests that are known to
fail.
* tests/test-snan-2.c (main): Skip tests that are known to fail.
* modules/snan-tests (Files): Add m4/math_h.m4.
(configure.ac): Require gl_LONG_DOUBLE_VS_DOUBLE.
* m4/math_h.m4 (gl_LONG_DOUBLE_VS_DOUBLE): Mention also NetBSD/sparc32.
Bruno Haible [Thu, 12 Oct 2023 22:41:57 +0000 (00:41 +0200)]
fpe-tracking, fpe-trapping: New modules.
* lib/fpe-trapping.h: New file.
* m4/mathfunc.m4 (gl_MATHFUNC): Handle also the type fp_except_t.
* m4/fpe.m4: New file.
* modules/fpe-tracking: New file.
* modules/fpe-trapping: New file.
Bruno Haible [Thu, 12 Oct 2023 18:59:58 +0000 (20:59 +0200)]
nan: New module.
* lib/nan.h: Renamed from tests/nan.h. Change double-inclusion guard.
* modules/nan: New file.
* modules/*-tests: Depend on this module instead of embedding
tests/nan.h.
Bruno Haible [Wed, 11 Oct 2023 14:43:07 +0000 (16:43 +0200)]
unictype/category-and-not: Add more tests.
Suggested by Arindam Sharma <arindam.sharma@imperial.ac.uk>.
* tests/unictype/test-categ_and_not.c (main): Add two more test cases.
* modules/unictype/category-and-not-tests (Depends-on): Add
unictype/category-Cc.
Bruno Haible [Sun, 8 Oct 2023 07:59:03 +0000 (09:59 +0200)]
isfinite: Work around a bug with 'long double' in glibc 2.5/ia64.
* m4/isfinite.m4 (gl_ISFINITEL_WORKS): Require
gl_LONG_DOUBLE_EXPONENT_LOCATION. Test also another NaN value.
* modules/isfinite (Files): Add m4/exponentl.m4.
* doc/posix-functions/isfinite.texi: Mention also a 'long double'
problem on ia64.
Bruno Haible [Sat, 7 Oct 2023 10:49:15 +0000 (12:49 +0200)]
totalorder*: Fix compilation error on glibc 2.25..2.30.
* m4/totalorder.m4 (gl_FUNC_TOTALORDERF): Test whether <math.h> has an
incompatible declaration of totalorderf, and set REPLACE_TOTALORDERF
to 1 if so.
(gl_FUNC_TOTALORDER): Test whether <math.h> has an incompatible
declaration of totalorder, and set REPLACE_TOTALORDER to 1 if so.
(gl_FUNC_TOTALORDERL): Test whether <math.h> has an incompatible
declaration of totalorderl, and set REPLACE_TOTALORDERL to 1 if so.
Paul Eggert [Thu, 5 Oct 2023 19:19:08 +0000 (12:19 -0700)]
totalorder: speed up configuration
* m4/totalorder.m4 (gl_FUNC_TOTALORDERF, gl_FUNC_TOTALORDER)
(gl_FUNC_TOTALORDERL): Avoid unnecessary call to AC_SEARCH_LIBS,
since the information is already available in shell vars.
Paul Eggert [Thu, 5 Oct 2023 18:43:37 +0000 (11:43 -0700)]
totalorderl: minor porting fixes
* lib/totalorderl.c (LDBL_SIGNBIT_WORD): Define to -1 if not defined.
(totalorderl): Avoid unused local zu by preferring ‘if’ to ‘ifdef’.
Don’t assume sizeof (unsigned long long) == 2 * sizeof (unsigned).
Bruno Haible [Wed, 4 Oct 2023 11:12:53 +0000 (13:12 +0200)]
totalorderl: Optimize.
* modules/totalorderl (Files): Add m4/signbit.m4.
* m4/totalorder.m4 (gl_FUNC_TOTALORDERL): Invoke
gl_LONG_DOUBLE_SIGN_LOCATION.
* lib/totalorderl.c (totalorderl): If LDBL_SIGNBIT_WORD is known,
use it, so that 'bigendian' becomes a constant.