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Annotation of embedaddon/libiconv/srclib/limits.in.h, revision 1.1.1.1

1.1       misho       1: /* A GNU-like <limits.h>.
                      2: 
                      3:    Copyright 2016-2019 Free Software Foundation, Inc.
                      4: 
                      5:    This program is free software; you can redistribute it and/or
                      6:    modify it under the terms of the GNU General Public License
                      7:    as published by the Free Software Foundation; either version 3, or
                      8:    (at your option) any later version.
                      9: 
                     10:    This program is distributed in the hope that it will be useful,
                     11:    but WITHOUT ANY WARRANTY; without even the implied warranty of
                     12:    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
                     13:    GNU General Public License for more details.
                     14: 
                     15:    You should have received a copy of the GNU General Public License
                     16:    along with this program; if not, see <https://www.gnu.org/licenses/>.  */
                     17: 
                     18: #ifndef _@GUARD_PREFIX@_LIMITS_H
                     19: 
                     20: #if __GNUC__ >= 3
                     21: @PRAGMA_SYSTEM_HEADER@
                     22: #endif
                     23: @PRAGMA_COLUMNS@
                     24: 
                     25: /* The include_next requires a split double-inclusion guard.  */
                     26: #@INCLUDE_NEXT@ @NEXT_LIMITS_H@
                     27: 
                     28: #ifndef _@GUARD_PREFIX@_LIMITS_H
                     29: #define _@GUARD_PREFIX@_LIMITS_H
                     30: 
                     31: #ifndef LLONG_MIN
                     32: # if defined LONG_LONG_MIN /* HP-UX 11.31 */
                     33: #  define LLONG_MIN LONG_LONG_MIN
                     34: # elif defined LONGLONG_MIN /* IRIX 6.5 */
                     35: #  define LLONG_MIN LONGLONG_MIN
                     36: # elif defined __GNUC__
                     37: #  define LLONG_MIN (- __LONG_LONG_MAX__ - 1LL)
                     38: # endif
                     39: #endif
                     40: #ifndef LLONG_MAX
                     41: # if defined LONG_LONG_MAX /* HP-UX 11.31 */
                     42: #  define LLONG_MAX LONG_LONG_MAX
                     43: # elif defined LONGLONG_MAX /* IRIX 6.5 */
                     44: #  define LLONG_MAX LONGLONG_MAX
                     45: # elif defined __GNUC__
                     46: #  define LLONG_MAX __LONG_LONG_MAX__
                     47: # endif
                     48: #endif
                     49: #ifndef ULLONG_MAX
                     50: # if defined ULONG_LONG_MAX /* HP-UX 11.31 */
                     51: #  define ULLONG_MAX ULONG_LONG_MAX
                     52: # elif defined ULONGLONG_MAX /* IRIX 6.5 */
                     53: #  define ULLONG_MAX ULONGLONG_MAX
                     54: # elif defined __GNUC__
                     55: #  define ULLONG_MAX (__LONG_LONG_MAX__ * 2ULL + 1ULL)
                     56: # endif
                     57: #endif
                     58: 
                     59: /* The number of usable bits in an unsigned or signed integer type
                     60:    with minimum value MIN and maximum value MAX, as an int expression
                     61:    suitable in #if.  Cover all known practical hosts.  This
                     62:    implementation exploits the fact that MAX is 1 less than a power of
                     63:    2, and merely counts the number of 1 bits in MAX; "COBn" means
                     64:    "count the number of 1 bits in the low-order n bits").  */
                     65: #define _GL_INTEGER_WIDTH(min, max) (((min) < 0) + _GL_COB128 (max))
                     66: #define _GL_COB128(n) (_GL_COB64 ((n) >> 31 >> 31 >> 2) + _GL_COB64 (n))
                     67: #define _GL_COB64(n) (_GL_COB32 ((n) >> 31 >> 1) + _GL_COB32 (n))
                     68: #define _GL_COB32(n) (_GL_COB16 ((n) >> 16) + _GL_COB16 (n))
                     69: #define _GL_COB16(n) (_GL_COB8 ((n) >> 8) + _GL_COB8 (n))
                     70: #define _GL_COB8(n) (_GL_COB4 ((n) >> 4) + _GL_COB4 (n))
                     71: #define _GL_COB4(n) (!!((n) & 8) + !!((n) & 4) + !!((n) & 2) + !!((n) & 1))
                     72: 
                     73: #ifndef WORD_BIT
                     74: /* Assume 'int' is 32 bits wide.  */
                     75: # define WORD_BIT 32
                     76: #endif
                     77: #ifndef LONG_BIT
                     78: /* Assume 'long' is 32 or 64 bits wide.  */
                     79: # if LONG_MAX == INT_MAX
                     80: #  define LONG_BIT 32
                     81: # else
                     82: #  define LONG_BIT 64
                     83: # endif
                     84: #endif
                     85: 
                     86: /* Macros specified by ISO/IEC TS 18661-1:2014.  */
                     87: 
                     88: #if (! defined ULLONG_WIDTH                                             \
                     89:      && (defined _GNU_SOURCE || defined __STDC_WANT_IEC_60559_BFP_EXT__))
                     90: # define CHAR_WIDTH _GL_INTEGER_WIDTH (CHAR_MIN, CHAR_MAX)
                     91: # define SCHAR_WIDTH _GL_INTEGER_WIDTH (SCHAR_MIN, SCHAR_MAX)
                     92: # define UCHAR_WIDTH _GL_INTEGER_WIDTH (0, UCHAR_MAX)
                     93: # define SHRT_WIDTH _GL_INTEGER_WIDTH (SHRT_MIN, SHRT_MAX)
                     94: # define USHRT_WIDTH _GL_INTEGER_WIDTH (0, USHRT_MAX)
                     95: # define INT_WIDTH _GL_INTEGER_WIDTH (INT_MIN, INT_MAX)
                     96: # define UINT_WIDTH _GL_INTEGER_WIDTH (0, UINT_MAX)
                     97: # define LONG_WIDTH _GL_INTEGER_WIDTH (LONG_MIN, LONG_MAX)
                     98: # define ULONG_WIDTH _GL_INTEGER_WIDTH (0, ULONG_MAX)
                     99: # define LLONG_WIDTH _GL_INTEGER_WIDTH (LLONG_MIN, LLONG_MAX)
                    100: # define ULLONG_WIDTH _GL_INTEGER_WIDTH (0, ULLONG_MAX)
                    101: #endif /* !ULLONG_WIDTH && (_GNU_SOURCE || __STDC_WANT_IEC_60559_BFP_EXT__) */
                    102: 
                    103: #endif /* _@GUARD_PREFIX@_LIMITS_H */
                    104: #endif /* _@GUARD_PREFIX@_LIMITS_H */