LibreOffice Module vcl (master) 1
jinclude.h
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1/*
2 * jinclude.h
3 *
4 * Copyright (C) 1991-1994, Thomas G. Lane.
5 * This file is part of the Independent JPEG Group's software.
6 * For conditions of distribution and use, see the accompanying README file.
7 *
8 * This file exists to provide a single place to fix any problems with
9 * including the wrong system include files. (Common problems are taken
10 * care of by the standard jconfig symbols, but on really weird systems
11 * you may have to edit this file.)
12 *
13 * NOTE: this file is NOT intended to be included by applications using the
14 * JPEG library. Most applications need only include jpeglib.h.
15 */
16
17/* Include auto-config file to find out which system include files we need. */
18
19#include <jconfig.h> /* auto configuration options */
20#define JCONFIG_INCLUDED /* so that jpeglib.h doesn't do it again */
21
22/*
23 * We need the NULL macro and size_t typedef.
24 * On an ANSI-conforming system it is sufficient to include <stddef.h>.
25 * Otherwise, we get them from <stdlib.h> or <stdio.h>; we may have to
26 * pull in <sys/types.h> as well.
27 * Note that the core JPEG library does not require <stdio.h>;
28 * only the default error handler and data source/destination modules do.
29 * But we must pull it in because of the references to FILE in jpeglib.h.
30 * You can remove those references if you want to compile without <stdio.h>.
31 */
32
33#ifdef HAVE_STDDEF_H
34#include <stddef.h>
35#endif
36
37#ifdef HAVE_STDLIB_H
38#include <stdlib.h>
39#endif
40
41#ifdef NEED_SYS_TYPES_H
42#include <sys/types.h>
43#endif
44
45#include <stdio.h>
46
47/*
48 * We need memory copying and zeroing functions, plus strncpy().
49 * ANSI and System V implementations declare these in <string.h>.
50 * BSD doesn't have the mem() functions, but it does have bcopy()/bzero().
51 * Some systems may declare memset and memcpy in <memory.h>.
52 *
53 * NOTE: we assume the size parameters to these functions are of type size_t.
54 * Change the casts in these macros if not!
55 */
56
57#ifdef NEED_BSD_STRINGS
58
59#include <strings.h>
60#define MEMZERO(target, size) bzero((void*)(target), (size_t)(size))
61#define MEMCOPY(dest, src, size) bcopy((const void*)(src), (void*)(dest), (size_t)(size))
62
63#else /* not BSD, assume ANSI/SysV string lib */
64
65#include <string.h>
66#define MEMZERO(target, size) memset((void*)(target), 0, (size_t)(size))
67#define MEMCOPY(dest, src, size) memcpy((void*)(dest), (const void*)(src), (size_t)(size))
68
69#endif
70
71/*
72 * In ANSI C, and indeed any rational implementation, size_t is also the
73 * type returned by sizeof(). However, it seems there are some irrational
74 * implementations out there, in which sizeof() returns an int even though
75 * size_t is defined as long or unsigned long. To ensure consistent results
76 * we always use this SIZEOF() macro in place of using sizeof() directly.
77 */
78
79#define SIZEOF(object) ((size_t)sizeof(object))