Branch
Hash :
b1fcec6d
Author :
Date :
2025-09-10T23:22:53
Remove support for IRIX. * all-modules: Update comments. * build-aux/install-reloc: Likewise. * build-aux/reloc-ldflags: Likewise. * gnulib-tool: Likewise. * gnulib-tool.py: Likewise. * gnulib-tool.sh: Likewise. * lib/aligned-malloc.h: Likewise. * lib/boot-time.c: Likewise. * lib/c32is-impl.h: Likewise. * lib/c32srtombs-state.c: Likewise. * lib/c32to-impl.h: Likewise. * lib/c32width.c: Likewise. * lib/errno.in.h: Likewise. * lib/euidaccess.c: Likewise. * lib/fbufmode.c: Likewise. * lib/fenv-except-state-get.c: Likewise. * lib/fenv-except-state-set.c: Likewise. * lib/fenv-except-tracking-clear.c: Likewise. * lib/fenv-except-tracking-set.c: Likewise. * lib/fenv-except-tracking-test.c: Likewise. * lib/fenv-except-trapping.c: Likewise. * lib/fenv-round.c: Likewise. * lib/fflush.c: Likewise. * lib/fileblocks.c: Likewise. * lib/forkpty.c: Likewise. * lib/fpending.c: Likewise. * lib/fpurge.c: Likewise. * lib/freadable.c: Likewise. * lib/freadahead.c: Likewise. * lib/freading.c: Likewise. * lib/freadptr.c: Likewise. * lib/freadseek.c: Likewise. * lib/fseeko.c: Likewise. * lib/fseterr.c: Likewise. * lib/fsusage.c: Likewise. * lib/fwritable.c: Likewise. * lib/fwriting.c: Likewise. * lib/getdomainname.c: Likewise. * lib/idpriv-drop.c: Likewise. * lib/idpriv-droptemp.c: Likewise. * lib/limits.in.h: Likewise. * lib/mbrtoc16.c: Likewise. * lib/mbrtoc32.c: Likewise. * lib/mbsrtoc32s-state.c: Likewise. * lib/mbsrtowcs-state.c: Likewise. * lib/mbtowc-lock.h: Likewise. * lib/minmax.h: Likewise. * lib/netdb.in.h: Likewise. * lib/pipe-filter-ii.c: Likewise. * lib/posix_openpt.c: Likewise. * lib/ptsname_r.c: Likewise. * lib/readutmp.c: Likewise. * lib/readutmp.h: Likewise. * lib/resource-ext.h: Likewise. * lib/safe-read.h: Likewise. * lib/safe-write.h: Likewise. * lib/save-cwd.c: Likewise. * lib/stdbool.in.h: Likewise. * lib/striconv.c: Likewise. * lib/striconveh.c: Likewise. * lib/termcap.h: Likewise. * lib/terminfo.h: Likewise. * lib/unistd.in.h: Likewise. * lib/vasnprintf.c: Likewise. * lib/wcrtomb.c: Likewise. * lib/wcsrtombs-state.c: Likewise. * m4/fenv-environment.m4: Likewise. * m4/fenv-exceptions-state.m4: Likewise. * m4/fenv-exceptions-tracking.m4: Likewise. * m4/fenv-rounding.m4: Likewise. * m4/fmod.m4: Likewise. * m4/getdomainname.m4: Likewise. * m4/getloadavg.m4: Likewise. * m4/getopt.m4: Likewise. * m4/hypot.m4: Likewise. * m4/hypotf.m4: Likewise. * m4/hypotl.m4: Likewise. * m4/iconv.m4: Likewise. * m4/intl-thread-locale.m4: Likewise. * m4/largefile.m4: Likewise. * m4/libdl.m4: Likewise. * m4/locale-ja.m4: Likewise. * m4/locale_h.m4: Likewise. * m4/log.m4: Likewise. * m4/log10.m4: Likewise. * m4/log10f.m4: Likewise. * m4/logf.m4: Likewise. * m4/modf.m4: Likewise. * m4/modff.m4: Likewise. * m4/modfl.m4: Likewise. * m4/pthread-rwlock.m4: Likewise. * m4/semaphore.m4: Likewise. * m4/socklen.m4: Likewise. * m4/stdint.m4: Likewise. * m4/strtod.m4: Likewise. * m4/strtof.m4: Likewise. * m4/strtold.m4: Likewise. * modules/sigsegv: Likewise. * posix-modules: Likewise. * pygnulib/GLImport.py: Likewise. * tests/init.sh: Likewise. * tests/test-echo.sh: Likewise. * tests/test-isatty.c: Likewise. * tests/test-math-h.c: Likewise. * tests/test-nonblocking-pipe.h: Likewise. * tests/test-nonblocking-socket.h: Likewise. * tests/test-strtod.h: Likewise. * tests/test-strtof.h: Likewise. * tests/test-strtold.h: Likewise. * tests/test-vasnprintf.c: Likewise. * tests/test-vasnwprintf.c: Likewise.
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/* Functions for tracking which floating-point exceptions have occurred.
Copyright (C) 1997-2025 Free Software Foundation, Inc.
This file 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.
This file 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 this program. If not, see <https://www.gnu.org/licenses/>. */
/* Based on glibc/sysdeps/<cpu>/{fclrexcpt.c,fraiseexcpt.c,ftestexcept.c}
together with glibc/sysdeps/<cpu>/{fpu_control.h,fenv_private.h,fenv_libc.h}. */
#include <config.h>
/* Specification. */
#include <fenv.h>
#include "fenv-private.h"
#if defined _AIX && defined __powerpc__ /* AIX */
/* On AIX, the register fpscr is augmented with a 32-bit word named fpscrx
in thread-local storage. Instead of accessing fpscr, we must access the
combination. The function fp_read_flag() does this. */
# include <float.h>
# include <fpxcp.h>
/* Documentation:
<https://www.ibm.com/docs/en/aix/7.3?topic=f-fp-clr-flag-fp-set-flag-fp-read-flag-fp-swap-flag-subroutine> */
int
fetestexcept (int exceptions)
{
fpflag_t flags = fp_read_flag ();
return fpflag_to_exceptions (flags) & FE_ALL_EXCEPT & exceptions;
}
#elif defined __GNUC__ || defined __clang__ || defined _MSC_VER
# if (defined __x86_64__ || defined _M_X64) || (defined __i386 || defined _M_IX86)
int
fetestexcept (int exceptions)
{
# if defined _MSC_VER
/* Look at the flags in the SSE unit. */
unsigned int mxcsr;
_FPU_GETSSECW (mxcsr);
return x86hardware_to_exceptions (mxcsr) & FE_ALL_EXCEPT & exceptions;
# else
unsigned short fstat;
_FPU_GETSTAT (fstat);
unsigned int mxcsr = 0;
if (CPU_HAS_SSE ())
{
/* Look at the flags in the SSE unit as well. */
_FPU_GETSSECW (mxcsr);
}
return x86hardware_to_exceptions (fstat | mxcsr) & FE_ALL_EXCEPT & exceptions;
# endif
}
# elif defined __aarch64__ /* arm64 */
int
fetestexcept (int exceptions)
{
unsigned long fpsr;
_FPU_GETFPSR (fpsr);
return fpsr & FE_ALL_EXCEPT & exceptions;
}
# elif defined __arm__
int
fetestexcept (int exceptions)
{
# ifdef __SOFTFP__
return 0;
# else
unsigned int fpscr;
_FPU_GETCW (fpscr);
return fpscr & FE_ALL_EXCEPT & exceptions;
# endif
}
# elif defined __alpha
int
fetestexcept (int exceptions)
{
unsigned long swcr = __ieee_get_fp_control ();
return swcr & FE_ALL_EXCEPT & exceptions;
}
# elif defined __hppa
int
fetestexcept (int exceptions)
{
union { unsigned long long fpreg; unsigned int halfreg[2]; } s;
/* Get the current status word. */
__asm__ __volatile__ ("fstd %%fr0,0(%1)" : "=m" (s.fpreg) : "r" (&s.fpreg) : "%r0");
return (s.halfreg[0] >> 27) & FE_ALL_EXCEPT & exceptions;
}
# elif defined __ia64__
int
fetestexcept (int exceptions)
{
unsigned long fpsr;
_FPU_GETCW (fpsr);
return (fpsr >> 13) & FE_ALL_EXCEPT & exceptions;
}
# elif defined __m68k__
int
fetestexcept (int exceptions)
{
unsigned int fpsr;
_FPU_GETFPSR (fpsr);
return fpsr & FE_ALL_EXCEPT & exceptions;
}
# elif defined __mips__
int
fetestexcept (int exceptions)
{
unsigned int fcsr;
_FPU_GETCW (fcsr);
return fcsr & FE_ALL_EXCEPT & exceptions;
}
# elif defined __loongarch__
int
fetestexcept (int exceptions)
{
unsigned int fcsr;
_FPU_GETCW (fcsr);
return fcsr & FE_ALL_EXCEPT & exceptions;
}
# elif defined __powerpc__
int
fetestexcept (int exceptions)
{
union { unsigned long long u; double f; } memenv;
_FPU_GETCW_AS_DOUBLE (memenv.f);
return memenv.u & FE_ALL_EXCEPT & exceptions;
}
# elif defined __riscv
int
fetestexcept (int exceptions)
{
unsigned int flags;
__asm__ __volatile__ ("frflags %0" : "=r" (flags)); /* same as "csrr %0, fflags" */
return flags & FE_ALL_EXCEPT & exceptions;
}
# elif defined __s390__ || defined __s390x__
int
fetestexcept (int exceptions)
{
unsigned int fpc;
_FPU_GETCW (fpc);
# if FE_INEXACT == 8 /* glibc compatible FE_* values */
return ((fpc >> 16) | ((fpc & 0x00000300) == 0 ? fpc >> 8 : 0))
& FE_ALL_EXCEPT & exceptions;
# else /* musl libc compatible FE_* values */
return (fpc | ((fpc & 0x00000300) == 0 ? fpc << 8 : 0))
& FE_ALL_EXCEPT & exceptions;
# endif
}
# elif defined __sh__
int
fetestexcept (int exceptions)
{
unsigned int fpscr;
_FPU_GETCW (fpscr);
return fpscr & FE_ALL_EXCEPT & exceptions;
}
# elif defined __sparc
int
fetestexcept (int exceptions)
{
unsigned long fsr;
_FPU_GETCW (fsr);
# if FE_INEXACT == 32 /* glibc compatible FE_* values */
return fsr & FE_ALL_EXCEPT & exceptions;
# else /* Solaris compatible FE_* values */
return (fsr >> 5) & FE_ALL_EXCEPT & exceptions;
# endif
}
# else
# if defined __GNUC__ || defined __clang__
# warning "Unknown CPU / architecture. Please report your platform and compiler to <bug-gnulib@gnu.org>."
# endif
# define NEED_FALLBACK 1
# endif
#else
/* The compiler does not support __asm__ statements or equivalent
intrinsics. */
# if HAVE_FPSETSTICKY
/* FreeBSD ≥ 3.1, NetBSD ≥ 1.1, OpenBSD, Solaris, Minix ≥ 3.2. */
/* Get fpgetsticky, fpsetsticky. */
# include <ieeefp.h>
/* The type is called 'fp_except_t' on FreeBSD, but 'fp_except' on
all other systems. */
# if !defined __FreeBSD__
# define fp_except_t fp_except
# endif
int
fetestexcept (int exceptions)
{
fp_except_t flags = fpgetsticky ();
return flags & FE_ALL_EXCEPT & exceptions;
}
# else
# define NEED_FALLBACK 1
# endif
#endif
#if NEED_FALLBACK
/* A dummy fallback. */
int
fetestexcept (int exceptions)
{
return 0;
}
#endif