2024-01-02 01:47:10 +00:00
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/* Copyright (C) 1992-2024 Free Software Foundation, Inc.
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2018-08-02 01:53:31 +00:00
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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Update from Gnulib
Make the following changes by hand, and run 'admin/merge-gnulib'.
* .gitignore: Add lib/malloc/*.gl.h.
* admin/merge-gnulib: Copy lib/af_alg.h and lib/save-cwd.h
directly from Gnulib, without worrying about Gnulib modules,
as these files are special cases.
(AVOIDED_MODULES): Remove malloc-posix.
* lib/malloc.c, lib/realloc.c, m4/malloc.m4, m4/realloc.m4:
* m4/year2038.m4: New files, copied from Gnulib.
* lib/malloca.c, lib/malloca.h:
* m4/close-stream.m4, m4/glibc21.m4, m4/malloca.m4:
Remove. These are either no longer present in Gnulib, or are no
longer needed by modules that Emacs uses.
* oldXMenu/AddPane.c, oldXmenu/Addsel.c: Include XmenuInt.h first;
needed for new Gnulib.
* src/xmenu.c: Call emacs_abort, not abort.
2021-10-04 19:11:39 +00:00
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modify it under the terms of the GNU Lesser General Public
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2018-08-02 01:53:31 +00:00
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License as published by the Free Software Foundation; either
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Update from Gnulib
Make the following changes by hand, and run 'admin/merge-gnulib'.
* .gitignore: Add lib/malloc/*.gl.h.
* admin/merge-gnulib: Copy lib/af_alg.h and lib/save-cwd.h
directly from Gnulib, without worrying about Gnulib modules,
as these files are special cases.
(AVOIDED_MODULES): Remove malloc-posix.
* lib/malloc.c, lib/realloc.c, m4/malloc.m4, m4/realloc.m4:
* m4/year2038.m4: New files, copied from Gnulib.
* lib/malloca.c, lib/malloca.h:
* m4/close-stream.m4, m4/glibc21.m4, m4/malloca.m4:
Remove. These are either no longer present in Gnulib, or are no
longer needed by modules that Emacs uses.
* oldXMenu/AddPane.c, oldXmenu/Addsel.c: Include XmenuInt.h first;
needed for new Gnulib.
* src/xmenu.c: Call emacs_abort, not abort.
2021-10-04 19:11:39 +00:00
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version 2.1 of the License, or (at your option) any later version.
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2018-08-02 01:53:31 +00:00
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
Update from Gnulib
Make the following changes by hand, and run 'admin/merge-gnulib'.
* .gitignore: Add lib/malloc/*.gl.h.
* admin/merge-gnulib: Copy lib/af_alg.h and lib/save-cwd.h
directly from Gnulib, without worrying about Gnulib modules,
as these files are special cases.
(AVOIDED_MODULES): Remove malloc-posix.
* lib/malloc.c, lib/realloc.c, m4/malloc.m4, m4/realloc.m4:
* m4/year2038.m4: New files, copied from Gnulib.
* lib/malloca.c, lib/malloca.h:
* m4/close-stream.m4, m4/glibc21.m4, m4/malloca.m4:
Remove. These are either no longer present in Gnulib, or are no
longer needed by modules that Emacs uses.
* oldXMenu/AddPane.c, oldXmenu/Addsel.c: Include XmenuInt.h first;
needed for new Gnulib.
* src/xmenu.c: Call emacs_abort, not abort.
2021-10-04 19:11:39 +00:00
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Lesser General Public License for more details.
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2018-08-02 01:53:31 +00:00
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Update from Gnulib
Make the following changes by hand, and run 'admin/merge-gnulib'.
* .gitignore: Add lib/malloc/*.gl.h.
* admin/merge-gnulib: Copy lib/af_alg.h and lib/save-cwd.h
directly from Gnulib, without worrying about Gnulib modules,
as these files are special cases.
(AVOIDED_MODULES): Remove malloc-posix.
* lib/malloc.c, lib/realloc.c, m4/malloc.m4, m4/realloc.m4:
* m4/year2038.m4: New files, copied from Gnulib.
* lib/malloca.c, lib/malloca.h:
* m4/close-stream.m4, m4/glibc21.m4, m4/malloca.m4:
Remove. These are either no longer present in Gnulib, or are no
longer needed by modules that Emacs uses.
* oldXMenu/AddPane.c, oldXmenu/Addsel.c: Include XmenuInt.h first;
needed for new Gnulib.
* src/xmenu.c: Call emacs_abort, not abort.
2021-10-04 19:11:39 +00:00
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You should have received a copy of the GNU Lesser General Public
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2018-08-02 01:53:31 +00:00
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License along with the GNU C Library; if not, see
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Update from Gnulib
This incorporates:
2019-09-22 Update some URLs
2019-09-15 fcntl-h: fix compilation error of creat.c on MSVC
2019-09-15 creat: new module
2019-09-15 access: new module
2019-09-09 Add option to assume best, not worst, when cross-compiling.
* build-aux/config.guess, build-aux/config.sub, doc/misc/texinfo.tex:
* lib/careadlinkat.c, lib/careadlinkat.h, lib/count-leading-zeros.h:
* lib/count-trailing-zeros.h, lib/diffseq.h, lib/fcntl.in.h:
* lib/ftoastr.c, lib/get-permissions.c:
* lib/ieee754.in.h, lib/inttypes.in.h, lib/mktime.c, lib/open.c:
* lib/pathmax.h, lib/pipe2.c, lib/stddef.in.h, lib/stdint.in.h:
* lib/stdlib.in.h, lib/str-two-way.h, lib/string.in.h, lib/time.in.h:
* lib/timegm.c, lib/unistd.in.h, m4/canonicalize.m4:
* m4/extern-inline.m4, m4/fcntl_h.m4, m4/fdopendir.m4:
* m4/getgroups.m4, m4/getopt.m4, m4/gettimeofday.m4:
* m4/gnulib-common.m4, m4/largefile.m4:
* m4/lstat.m4, m4/memmem.m4, m4/mktime.m4, m4/nocrash.m4, m4/open.m4:
* m4/pselect.m4, m4/putenv.m4, m4/readlink.m4, m4/regex.m4:
* m4/symlink.m4, m4/unistd_h.m4, m4/utimens.m4, m4/utimes.m4:
Copy from Gnulib.
* lib/gnulib.mk.in, m4/gnulib-comp.m4: Regenerate.
* m4/open-slash.m4: New file, copied from Gnulib.
2019-09-23 06:50:59 +00:00
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<https://www.gnu.org/licenses/>. */
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2018-08-02 01:53:31 +00:00
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#ifndef _IEEE754_H
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#define _IEEE754_H 1
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#ifndef _GL_GNULIB_HEADER
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/* Ordinary glibc usage. */
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# include <features.h>
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2024-06-04 04:57:53 +00:00
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# include <bits/endian.h>
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# define _IEEE754_BYTE_ORDER __BYTE_ORDER
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# define _IEEE754_BIG_ENDIAN __BIG_ENDIAN
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# define _IEEE754_LITTLE_ENDIAN __LITTLE_ENDIAN
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# define _IEEE754_FLOAT_WORD_ORDER __FLOAT_WORD_ORDER
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2018-08-02 01:53:31 +00:00
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#else
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/* Gnulib usage. */
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2024-06-04 04:57:53 +00:00
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# include <endian.h>
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# define _IEEE754_BYTE_ORDER BYTE_ORDER
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# define _IEEE754_BIG_ENDIAN BIG_ENDIAN
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# define _IEEE754_LITTLE_ENDIAN LITTLE_ENDIAN
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# define _IEEE754_FLOAT_WORD_ORDER BYTE_ORDER
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2018-08-02 01:53:31 +00:00
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#endif
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2024-06-04 04:57:53 +00:00
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#ifdef __cplusplus
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extern "C" {
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#endif
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2018-08-02 01:53:31 +00:00
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union ieee754_float
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{
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float f;
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/* This is the IEEE 754 single-precision format. */
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struct
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{
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2024-06-04 04:57:53 +00:00
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#if _IEEE754_BYTE_ORDER == _IEEE754_BIG_ENDIAN
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2018-08-02 01:53:31 +00:00
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unsigned int negative:1;
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unsigned int exponent:8;
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unsigned int mantissa:23;
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#endif /* Big endian. */
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2024-06-04 04:57:53 +00:00
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#if _IEEE754_BYTE_ORDER == _IEEE754_LITTLE_ENDIAN
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2018-08-02 01:53:31 +00:00
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unsigned int mantissa:23;
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unsigned int exponent:8;
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unsigned int negative:1;
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#endif /* Little endian. */
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} ieee;
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2020-05-03 21:57:10 +00:00
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/* This format makes it easier to see if a NaN is a signalling NaN. */
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2018-08-02 01:53:31 +00:00
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struct
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{
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2024-06-04 04:57:53 +00:00
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#if _IEEE754_BYTE_ORDER == _IEEE754_BIG_ENDIAN
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2018-08-02 01:53:31 +00:00
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unsigned int negative:1;
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unsigned int exponent:8;
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unsigned int quiet_nan:1;
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unsigned int mantissa:22;
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#endif /* Big endian. */
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2024-06-04 04:57:53 +00:00
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#if _IEEE754_BYTE_ORDER == _IEEE754_LITTLE_ENDIAN
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2018-08-02 01:53:31 +00:00
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unsigned int mantissa:22;
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unsigned int quiet_nan:1;
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unsigned int exponent:8;
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unsigned int negative:1;
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#endif /* Little endian. */
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} ieee_nan;
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};
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#define IEEE754_FLOAT_BIAS 0x7f /* Added to exponent. */
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union ieee754_double
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{
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double d;
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/* This is the IEEE 754 double-precision format. */
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struct
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{
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2024-06-04 04:57:53 +00:00
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#if _IEEE754_BYTE_ORDER == _IEEE754_BIG_ENDIAN
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2018-08-02 01:53:31 +00:00
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unsigned int negative:1;
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unsigned int exponent:11;
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/* Together these comprise the mantissa. */
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unsigned int mantissa0:20;
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unsigned int mantissa1:32;
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#endif /* Big endian. */
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2024-06-04 04:57:53 +00:00
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#if _IEEE754_BYTE_ORDER == _IEEE754_LITTLE_ENDIAN
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# if _IEEE754_FLOAT_WORD_ORDER == _IEEE754_BIG_ENDIAN
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2018-08-02 01:53:31 +00:00
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unsigned int mantissa0:20;
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unsigned int exponent:11;
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unsigned int negative:1;
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unsigned int mantissa1:32;
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# else
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/* Together these comprise the mantissa. */
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unsigned int mantissa1:32;
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unsigned int mantissa0:20;
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unsigned int exponent:11;
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unsigned int negative:1;
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# endif
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#endif /* Little endian. */
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} ieee;
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2020-05-03 21:57:10 +00:00
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/* This format makes it easier to see if a NaN is a signalling NaN. */
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2018-08-02 01:53:31 +00:00
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struct
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{
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2024-06-04 04:57:53 +00:00
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#if _IEEE754_BYTE_ORDER == _IEEE754_BIG_ENDIAN
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2018-08-02 01:53:31 +00:00
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unsigned int negative:1;
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unsigned int exponent:11;
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unsigned int quiet_nan:1;
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/* Together these comprise the mantissa. */
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unsigned int mantissa0:19;
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unsigned int mantissa1:32;
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#else
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2024-06-04 04:57:53 +00:00
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# if _IEEE754_FLOAT_WORD_ORDER == _IEEE754_BIG_ENDIAN
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2018-08-02 01:53:31 +00:00
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unsigned int mantissa0:19;
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unsigned int quiet_nan:1;
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unsigned int exponent:11;
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unsigned int negative:1;
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unsigned int mantissa1:32;
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# else
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/* Together these comprise the mantissa. */
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unsigned int mantissa1:32;
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unsigned int mantissa0:19;
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unsigned int quiet_nan:1;
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unsigned int exponent:11;
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unsigned int negative:1;
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# endif
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#endif
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} ieee_nan;
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};
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#define IEEE754_DOUBLE_BIAS 0x3ff /* Added to exponent. */
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union ieee854_long_double
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{
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long double d;
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/* This is the IEEE 854 double-extended-precision format. */
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struct
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{
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2024-06-04 04:57:53 +00:00
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#if _IEEE754_BYTE_ORDER == _IEEE754_BIG_ENDIAN
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2018-08-02 01:53:31 +00:00
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unsigned int negative:1;
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unsigned int exponent:15;
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unsigned int empty:16;
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unsigned int mantissa0:32;
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unsigned int mantissa1:32;
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#endif
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2024-06-04 04:57:53 +00:00
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#if _IEEE754_BYTE_ORDER == _IEEE754_LITTLE_ENDIAN
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# if _IEEE754_FLOAT_WORD_ORDER == _IEEE754_BIG_ENDIAN
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2018-08-02 01:53:31 +00:00
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unsigned int exponent:15;
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unsigned int negative:1;
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unsigned int empty:16;
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unsigned int mantissa0:32;
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unsigned int mantissa1:32;
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# else
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unsigned int mantissa1:32;
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unsigned int mantissa0:32;
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unsigned int exponent:15;
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unsigned int negative:1;
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unsigned int empty:16;
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# endif
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#endif
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} ieee;
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/* This is for NaNs in the IEEE 854 double-extended-precision format. */
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struct
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{
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2024-06-04 04:57:53 +00:00
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#if _IEEE754_BYTE_ORDER == _IEEE754_BIG_ENDIAN
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2018-08-02 01:53:31 +00:00
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unsigned int negative:1;
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unsigned int exponent:15;
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unsigned int empty:16;
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unsigned int one:1;
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unsigned int quiet_nan:1;
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unsigned int mantissa0:30;
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unsigned int mantissa1:32;
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#endif
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2024-06-04 04:57:53 +00:00
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#if _IEEE754_BYTE_ORDER == _IEEE754_LITTLE_ENDIAN
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# if _IEEE754_FLOAT_WORD_ORDER == _IEEE754_BIG_ENDIAN
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2018-08-02 01:53:31 +00:00
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unsigned int exponent:15;
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unsigned int negative:1;
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unsigned int empty:16;
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unsigned int mantissa0:30;
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unsigned int quiet_nan:1;
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unsigned int one:1;
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unsigned int mantissa1:32;
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# else
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unsigned int mantissa1:32;
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unsigned int mantissa0:30;
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unsigned int quiet_nan:1;
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unsigned int one:1;
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unsigned int exponent:15;
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unsigned int negative:1;
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unsigned int empty:16;
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# endif
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#endif
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} ieee_nan;
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};
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#define IEEE854_LONG_DOUBLE_BIAS 0x3fff
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2024-06-04 04:57:53 +00:00
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#ifdef __cplusplus
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}
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#endif
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2018-08-02 01:53:31 +00:00
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#endif /* ieee754.h */
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