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author | Paul Eggert <eggert@cs.ucla.edu> | 2016-09-15 11:50:23 -0700 |
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committer | Paul Eggert <eggert@cs.ucla.edu> | 2016-09-15 15:55:30 -0700 |
commit | 8f4b6a20bfec96086845b2f7161e121b1e41b4ad (patch) | |
tree | e8c4a85626437b0f77ed0a7b575e7627d45dce9e /lib/limits.in.h | |
parent | 3c586e182c0694896dda670f5fc663b46c9bac63 (diff) | |
download | emacs-8f4b6a20bfec96086845b2f7161e121b1e41b4ad.tar.gz |
Update from gnulib
This incorporates:
2016-09-15 stdint: support new _WIDTH macros
2016-09-15 limits-h: new module
2016-09-15 sys_types: avoid glibc 2.25 warnings about major()
2016-09-15 extensions: port to more ISO C TSes
2016-09-13 intprops: new macro TYPE_WIDTH
2016-09-13 extensions: port to recent ISO C TRs
* .gitignore: Add lib/limits.h.
* doc/misc/texinfo.tex, lib/ftoastr.h, lib/intprops.h:
* lib/stdint.in.h, m4/extensions.m4, m4/stdint.m4, m4/stdio_h.m4:
* m4/sys_types_h.m4: Copy from gnulib.
* lib/gnulib.mk, m4/gnulib-comp.m4: Regenerate.
* lib/limits.in.h, m4/limits-h.m4: New files, copie from gnulib.
* nt/gnulib.mk: Merge changes from lib/gnulib.mk.
Diffstat (limited to 'lib/limits.in.h')
-rw-r--r-- | lib/limits.in.h | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/lib/limits.in.h b/lib/limits.in.h new file mode 100644 index 00000000000..a1eae02ada8 --- /dev/null +++ b/lib/limits.in.h @@ -0,0 +1,63 @@ +/* A GNU-like <limits.h>. + + Copyright 2016 Free Software Foundation, Inc. + + This program is free software; you can redistribute it and/or + modify it under the terms of the GNU General Public License + as published by the Free Software Foundation; either version 3, or + (at your option) any later version. + + This program 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 General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, see <http://www.gnu.org/licenses/>. */ + +#ifndef _@GUARD_PREFIX@_LIMITS_H + +#if __GNUC__ >= 3 +@PRAGMA_SYSTEM_HEADER@ +#endif +@PRAGMA_COLUMNS@ + +/* The include_next requires a split double-inclusion guard. */ +#@INCLUDE_NEXT@ @NEXT_LIMITS_H@ + +#ifndef _@GUARD_PREFIX@_LIMITS_H +#define _@GUARD_PREFIX@_LIMITS_H + +/* The number of usable bits in an unsigned or signed integer type + with minimum value MIN and maximum value MAX, as an int expression + suitable in #if. Cover all known practical hosts. This + implementation exploits the fact that MAX is 1 less than a power of + 2, and merely counts the number of 1 bits in MAX; "COBn" means + "count the number of 1 bits in the low-order n bits"). */ +#define _GL_INTEGER_WIDTH(min, max) (((min) < 0) + _GL_COB128 (max)) +#define _GL_COB128(n) (_GL_COB64 ((n) >> 31 >> 31 >> 2) + _GL_COB64 (n)) +#define _GL_COB64(n) (_GL_COB32 ((n) >> 31 >> 1) + _GL_COB32 (n)) +#define _GL_COB32(n) (_GL_COB16 ((n) >> 16) + _GL_COB16 (n)) +#define _GL_COB16(n) (_GL_COB8 ((n) >> 8) + _GL_COB8 (n)) +#define _GL_COB8(n) (_GL_COB4 ((n) >> 4) + _GL_COB4 (n)) +#define _GL_COB4(n) (!!((n) & 8) + !!((n) & 4) + !!((n) & 2) + !!((n) & 1)) + +/* Macros specified by ISO/IEC TS 18661-1:2014. */ + +#if (! defined ULLONG_WIDTH \ + && (defined _GNU_SOURCE || defined __STDC_WANT_IEC_60559_BFP_EXT__)) +# define CHAR_WIDTH _GL_INTEGER_WIDTH (CHAR_MIN, CHAR_MAX) +# define SCHAR_WIDTH _GL_INTEGER_WIDTH (SCHAR_MIN, SCHAR_MAX) +# define UCHAR_WIDTH _GL_INTEGER_WIDTH (0, UCHAR_MAX) +# define SHRT_WIDTH _GL_INTEGER_WIDTH (SHRT_MIN, SHRT_MAX) +# define USHRT_WIDTH _GL_INTEGER_WIDTH (0, USHRT_MAX) +# define INT_WIDTH _GL_INTEGER_WIDTH (INT_MIN, INT_MAX) +# define UINT_WIDTH _GL_INTEGER_WIDTH (0, UINT_MAX) +# define LONG_WIDTH _GL_INTEGER_WIDTH (LONG_MIN, LONG_MAX) +# define ULONG_WIDTH _GL_INTEGER_WIDTH (0, ULONG_MAX) +# define LLONG_WIDTH _GL_INTEGER_WIDTH (LLONG_MIN, LLONG_MAX) +# define ULLONG_WIDTH _GL_INTEGER_WIDTH (0, ULLONG_MAX) +#endif /* !ULLONG_WIDTH && (_GNU_SOURCE || __STDC_WANT_IEC_60559_BFP_EXT__) */ + +#endif /* _@GUARD_PREFIX@_LIMITS_H */ +#endif /* _@GUARD_PREFIX@_LIMITS_H */ |