dhcpd-pools  3.0
ISC dhcpd lease usage analyser
limits.in.h
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1 /* A GNU-like <limits.h>.
2 
3  Copyright 2016-2017 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 /* For HP-UX 11.31. */
32 #if defined LONG_LONG_MIN && !defined LLONG_MIN
33 # define LLONG_MIN LONG_LONG_MIN
34 #endif
35 #if defined LONG_LONG_MAX && !defined LLONG_MAX
36 # define LLONG_MAX LONG_LONG_MAX
37 #endif
38 #if defined ULONG_LONG_MAX && !defined ULLONG_MAX
39 # define ULLONG_MAX ULONG_LONG_MAX
40 #endif
41 
42 /* The number of usable bits in an unsigned or signed integer type
43  with minimum value MIN and maximum value MAX, as an int expression
44  suitable in #if. Cover all known practical hosts. This
45  implementation exploits the fact that MAX is 1 less than a power of
46  2, and merely counts the number of 1 bits in MAX; "COBn" means
47  "count the number of 1 bits in the low-order n bits"). */
48 #define _GL_INTEGER_WIDTH(min, max) (((min) < 0) + _GL_COB128 (max))
49 #define _GL_COB128(n) (_GL_COB64 ((n) >> 31 >> 31 >> 2) + _GL_COB64 (n))
50 #define _GL_COB64(n) (_GL_COB32 ((n) >> 31 >> 1) + _GL_COB32 (n))
51 #define _GL_COB32(n) (_GL_COB16 ((n) >> 16) + _GL_COB16 (n))
52 #define _GL_COB16(n) (_GL_COB8 ((n) >> 8) + _GL_COB8 (n))
53 #define _GL_COB8(n) (_GL_COB4 ((n) >> 4) + _GL_COB4 (n))
54 #define _GL_COB4(n) (!!((n) & 8) + !!((n) & 4) + !!((n) & 2) + !!((n) & 1))
55 
56 /* Macros specified by ISO/IEC TS 18661-1:2014. */
57 
58 #if (! defined ULLONG_WIDTH \
59  && (defined _GNU_SOURCE || defined __STDC_WANT_IEC_60559_BFP_EXT__))
60 # define CHAR_WIDTH _GL_INTEGER_WIDTH (CHAR_MIN, CHAR_MAX)
61 # define SCHAR_WIDTH _GL_INTEGER_WIDTH (SCHAR_MIN, SCHAR_MAX)
62 # define UCHAR_WIDTH _GL_INTEGER_WIDTH (0, UCHAR_MAX)
63 # define SHRT_WIDTH _GL_INTEGER_WIDTH (SHRT_MIN, SHRT_MAX)
64 # define USHRT_WIDTH _GL_INTEGER_WIDTH (0, USHRT_MAX)
65 # define INT_WIDTH _GL_INTEGER_WIDTH (INT_MIN, INT_MAX)
66 # define UINT_WIDTH _GL_INTEGER_WIDTH (0, UINT_MAX)
67 # define LONG_WIDTH _GL_INTEGER_WIDTH (LONG_MIN, LONG_MAX)
68 # define ULONG_WIDTH _GL_INTEGER_WIDTH (0, ULONG_MAX)
69 # define LLONG_WIDTH _GL_INTEGER_WIDTH (LLONG_MIN, LLONG_MAX)
70 # define ULLONG_WIDTH _GL_INTEGER_WIDTH (0, ULLONG_MAX)
71 #endif /* !ULLONG_WIDTH && (_GNU_SOURCE || __STDC_WANT_IEC_60559_BFP_EXT__) */
72 
73 #endif /* _@GUARD_PREFIX@_LIMITS_H */
74 #endif /* _@GUARD_PREFIX@_LIMITS_H */