/* A GNU-like . Copyright 2016-2017 Free Software Foundation, Inc. This program 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, 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 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 . */ #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 */