/usr/include/apt-pkg/macros.h is in libapt-pkg-dev 0.8.16~exp12ubuntu10.21.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 | // -*- mode: cpp; mode: fold -*-
// Description /*{{{*/
/* ######################################################################
Macros Header - Various useful macro definitions
This source is placed in the Public Domain, do with it what you will
It was originally written by Brian C. White.
##################################################################### */
/*}}}*/
// Private header
#ifndef MACROS_H
#define MACROS_H
// MIN_VAL(SINT16) will return -0x8000 and MAX_VAL(SINT16) = 0x7FFF
#define MIN_VAL(t) (((t)(-1) > 0) ? (t)( 0) : (t)(((1L<<(sizeof(t)*8-1)) )))
#define MAX_VAL(t) (((t)(-1) > 0) ? (t)(-1) : (t)(((1L<<(sizeof(t)*8-1))-1)))
// Min/Max functions
#if !defined(MIN)
#if defined(__HIGHC__)
#define MIN(x,y) _min(x,y)
#define MAX(x,y) _max(x,y)
#endif
// GNU C++ has a min/max operator <coolio>
#if defined(__GNUG__)
#define MIN(A,B) ((A) <? (B))
#define MAX(A,B) ((A) >? (B))
#endif
/* Templates tend to mess up existing code that uses min/max because of the
strict matching requirements */
#if !defined(MIN)
#define MIN(A,B) ((A) < (B)?(A):(B))
#define MAX(A,B) ((A) > (B)?(A):(B))
#endif
#endif
/* Bound functions, bound will return the value b within the limits a-c
bounv will change b so that it is within the limits of a-c. */
#define _bound(a,b,c) MIN(c,MAX(b,a))
#define _boundv(a,b,c) b = _bound(a,b,c)
#define ABS(a) (((a) < (0)) ?-(a) : (a))
/* Usefull count macro, use on an array of things and it will return the
number of items in the array */
#define _count(a) (sizeof(a)/sizeof(a[0]))
// Flag Macros
#define FLAG(f) (1L << (f))
#define SETFLAG(v,f) ((v) |= FLAG(f))
#define CLRFLAG(v,f) ((v) &=~FLAG(f))
#define CHKFLAG(v,f) ((v) & FLAG(f) ? true : false)
// some nice optional GNUC features
#if __GNUC__ >= 3
#define __must_check __attribute__ ((warn_unused_result))
#define __deprecated __attribute__ ((deprecated))
#define __attrib_const __attribute__ ((__const__))
/* likely() and unlikely() can be used to mark boolean expressions
as (not) likely true which will help the compiler to optimise */
#define likely(x) __builtin_expect (!!(x), 1)
#define unlikely(x) __builtin_expect (!!(x), 0)
#else
#define __must_check /* no warn_unused_result */
#define __deprecated /* no deprecated */
#define __attrib_const /* no const attribute */
#define likely(x) (x)
#define unlikely(x) (x)
#endif
// cold functions are unlikely() to be called
#if (__GNUC__ == 4 && __GNUC_MINOR__ >= 3) || __GNUC__ > 4
#define __cold __attribute__ ((__cold__))
#define __hot __attribute__ ((__hot__))
#else
#define __cold /* no cold marker */
#define __hot /* no hot marker */
#endif
#ifdef __GNUG__
// Methods have a hidden this parameter that is visible to this attribute
#define __like_printf(n) __attribute__((format(printf, n, n + 1)))
#else
#define __like_printf(n) /* no like-printf */
#endif
#endif
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