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authorThomas Guyot-Sionnest <dermoth@aei.ca>2010-04-07 21:11:46 -0400
committerThomas Guyot-Sionnest <dermoth@aei.ca>2010-04-12 21:26:35 -0400
commit74da141e618ef99959d509cb2e7be35a348a39db (patch)
tree88ebc38b381a1021fc2d74864a71e230ae591c3d /gl/intprops.h
parentc63a4f726a0b6ad8cf6040f947754a81fd4683bb (diff)
downloadmonitoring-plugins-74da141e618ef99959d509cb2e7be35a348a39db.tar.gz
Sync with the latest Gnulib code (177f525)
Signed-off-by: Thomas Guyot-Sionnest <dermoth@aei.ca>
Diffstat (limited to 'gl/intprops.h')
-rw-r--r--gl/intprops.h50
1 files changed, 28 insertions, 22 deletions
diff --git a/gl/intprops.h b/gl/intprops.h
index 002161ee..46f4d47d 100644
--- a/gl/intprops.h
+++ b/gl/intprops.h
@@ -1,6 +1,7 @@
1/* intprops.h -- properties of integer types 1/* intprops.h -- properties of integer types
2 2
3 Copyright (C) 2001, 2002, 2003, 2004, 2005 Free Software Foundation, Inc. 3 Copyright (C) 2001, 2002, 2003, 2004, 2005, 2009, 2010 Free Software
4 Foundation, Inc.
4 5
5 This program is free software: you can redistribute it and/or modify 6 This program is free software: you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by 7 it under the terms of the GNU General Public License as published by
@@ -17,40 +18,43 @@
17 18
18/* Written by Paul Eggert. */ 19/* Written by Paul Eggert. */
19 20
20#include <limits.h> 21#ifndef GL_INTPROPS_H
22# define GL_INTPROPS_H
23
24# include <limits.h>
21 25
22/* The extra casts in the following macros work around compiler bugs, 26/* The extra casts in the following macros work around compiler bugs,
23 e.g., in Cray C 5.0.3.0. */ 27 e.g., in Cray C 5.0.3.0. */
24 28
25/* True if the arithmetic type T is an integer type. bool counts as 29/* True if the arithmetic type T is an integer type. bool counts as
26 an integer. */ 30 an integer. */
27#define TYPE_IS_INTEGER(t) ((t) 1.5 == 1) 31# define TYPE_IS_INTEGER(t) ((t) 1.5 == 1)
28 32
29/* True if negative values of the signed integer type T use two's 33/* True if negative values of the signed integer type T use two's
30 complement, ones' complement, or signed magnitude representation, 34 complement, ones' complement, or signed magnitude representation,
31 respectively. Much GNU code assumes two's complement, but some 35 respectively. Much GNU code assumes two's complement, but some
32 people like to be portable to all possible C hosts. */ 36 people like to be portable to all possible C hosts. */
33#define TYPE_TWOS_COMPLEMENT(t) ((t) ~ (t) 0 == (t) -1) 37# define TYPE_TWOS_COMPLEMENT(t) ((t) ~ (t) 0 == (t) -1)
34#define TYPE_ONES_COMPLEMENT(t) ((t) ~ (t) 0 == 0) 38# define TYPE_ONES_COMPLEMENT(t) ((t) ~ (t) 0 == 0)
35#define TYPE_SIGNED_MAGNITUDE(t) ((t) ~ (t) 0 < (t) -1) 39# define TYPE_SIGNED_MAGNITUDE(t) ((t) ~ (t) 0 < (t) -1)
36 40
37/* True if the arithmetic type T is signed. */ 41/* True if the arithmetic type T is signed. */
38#define TYPE_SIGNED(t) (! ((t) 0 < (t) -1)) 42# define TYPE_SIGNED(t) (! ((t) 0 < (t) -1))
39 43
40/* The maximum and minimum values for the integer type T. These 44/* The maximum and minimum values for the integer type T. These
41 macros have undefined behavior if T is signed and has padding bits. 45 macros have undefined behavior if T is signed and has padding bits.
42 If this is a problem for you, please let us know how to fix it for 46 If this is a problem for you, please let us know how to fix it for
43 your host. */ 47 your host. */
44#define TYPE_MINIMUM(t) \ 48# define TYPE_MINIMUM(t) \
45 ((t) (! TYPE_SIGNED (t) \ 49 ((t) (! TYPE_SIGNED (t) \
46 ? (t) 0 \ 50 ? (t) 0 \
47 : TYPE_SIGNED_MAGNITUDE (t) \ 51 : TYPE_SIGNED_MAGNITUDE (t) \
48 ? ~ (t) 0 \ 52 ? ~ (t) 0 \
49 : ~ (t) 0 << (sizeof (t) * CHAR_BIT - 1))) 53 : ~ (t) 0 << (sizeof (t) * CHAR_BIT - 1)))
50#define TYPE_MAXIMUM(t) \ 54# define TYPE_MAXIMUM(t) \
51 ((t) (! TYPE_SIGNED (t) \ 55 ((t) (! TYPE_SIGNED (t) \
52 ? (t) -1 \ 56 ? (t) -1 \
53 : ~ (~ (t) 0 << (sizeof (t) * CHAR_BIT - 1)))) 57 : ~ (~ (t) 0 << (sizeof (t) * CHAR_BIT - 1))))
54 58
55/* Return zero if T can be determined to be an unsigned type. 59/* Return zero if T can be determined to be an unsigned type.
56 Otherwise, return 1. 60 Otherwise, return 1.
@@ -58,20 +62,22 @@
58 tighter bound. Otherwise, it overestimates the true bound by one byte 62 tighter bound. Otherwise, it overestimates the true bound by one byte
59 when applied to unsigned types of size 2, 4, 16, ... bytes. 63 when applied to unsigned types of size 2, 4, 16, ... bytes.
60 The symbol signed_type_or_expr__ is private to this header file. */ 64 The symbol signed_type_or_expr__ is private to this header file. */
61#if __GNUC__ >= 2 65# if __GNUC__ >= 2
62# define signed_type_or_expr__(t) TYPE_SIGNED (__typeof__ (t)) 66# define signed_type_or_expr__(t) TYPE_SIGNED (__typeof__ (t))
63#else 67# else
64# define signed_type_or_expr__(t) 1 68# define signed_type_or_expr__(t) 1
65#endif 69# endif
66 70
67/* Bound on length of the string representing an integer type or expression T. 71/* Bound on length of the string representing an integer type or expression T.
68 Subtract 1 for the sign bit if T is signed; log10 (2.0) < 146/485; 72 Subtract 1 for the sign bit if T is signed; log10 (2.0) < 146/485;
69 add 1 for integer division truncation; add 1 more for a minus sign 73 add 1 for integer division truncation; add 1 more for a minus sign
70 if needed. */ 74 if needed. */
71#define INT_STRLEN_BOUND(t) \ 75# define INT_STRLEN_BOUND(t) \
72 ((sizeof (t) * CHAR_BIT - signed_type_or_expr__ (t)) * 146 / 485 \ 76 ((sizeof (t) * CHAR_BIT - signed_type_or_expr__ (t)) * 146 / 485 \
73 + signed_type_or_expr__ (t) + 1) 77 + signed_type_or_expr__ (t) + 1)
74 78
75/* Bound on buffer size needed to represent an integer type or expression T, 79/* Bound on buffer size needed to represent an integer type or expression T,
76 including the terminating null. */ 80 including the terminating null. */
77#define INT_BUFSIZE_BOUND(t) (INT_STRLEN_BOUND (t) + 1) 81# define INT_BUFSIZE_BOUND(t) (INT_STRLEN_BOUND (t) + 1)
82
83#endif /* GL_INTPROPS_H */