/*

 * jinclude.h

 *

 * This file was part of the Independent JPEG Group's software:

 * Copyright (C) 1991-1994, Thomas G. Lane.

 * It was modified by The libjpeg-turbo Project to include only code relevant

 * to libjpeg-turbo.

 * For conditions of distribution and use, see the accompanying README.ijg

 * file.

 *

 * This file exists to provide a single place to fix any problems with

 * including the wrong system include files.  (Common problems are taken

 * care of by the standard jconfig symbols, but on really weird systems

 * you may have to edit this file.)

 *

 * NOTE: this file is NOT intended to be included by applications using the

 * JPEG library.  Most applications need only include jpeglib.h.

 */

/* Include auto-config file to find out which system include files we need. */

#include "jconfig.h"            /* auto configuration options */

#define JCONFIG_INCLUDED        /* so that jpeglib.h doesn't do it again */

/*

 * We need the NULL macro and size_t typedef.

 * On an ANSI-conforming system it is sufficient to include <stddef.h>.</stddef.h>

 * Otherwise, we get them from <stdlib.h> or <stdio.h>; we may have to</stdio.h></stdlib.h>

 * pull in <sys types.h=""> as well.</sys>

 * Note that the core JPEG library does not require <stdio.h>;</stdio.h>

 * only the default error handler and data source/destination modules do.

 * But we must pull it in because of the references to FILE in jpeglib.h.

 * You can remove those references if you want to compile without <stdio.h>.</stdio.h>

 */

#ifdef HAVE_STDDEF_H

#include <stddef.h></stddef.h>

#endif

#ifdef HAVE_STDLIB_H

#include <stdlib.h></stdlib.h>

#endif

#ifdef NEED_SYS_TYPES_H

#include <sys types.h=""></sys>

#endif

#include <stdio.h></stdio.h>

/*

 * We need memory copying and zeroing functions, plus strncpy().

 * ANSI and System V implementations declare these in <string.h>.</string.h>

 * BSD doesn't have the mem() functions, but it does have bcopy()/bzero().

 * Some systems may declare memset and memcpy in <memory.h>.</memory.h>

 *

 * NOTE: we assume the size parameters to these functions are of type size_t.

 * Change the casts in these macros if not!

 */

#ifdef NEED_BSD_STRINGS

#include <strings.h></strings.h>

#define MEMZERO(target, size) \

  bzero((void *)(target), (size_t)(size))

#define MEMCOPY(dest, src, size) \

  bcopy((const void *)(src), (void *)(dest), (size_t)(size))

#else /* not BSD, assume ANSI/SysV string lib */

#include <string.h></string.h>

#define MEMZERO(target, size) \

  memset((void *)(target), 0, (size_t)(size))

#define MEMCOPY(dest, src, size) \

  memcpy((void *)(dest), (const void *)(src), (size_t)(size))

#endif

/*

 * The modules that use fread() and fwrite() always invoke them through

 * these macros.  On some systems you may need to twiddle the argument casts.

 * CAUTION: argument order is different from underlying functions!

 */

#define JFREAD(file, buf, sizeofbuf) \

  ((size_t)fread((void *)(buf), (size_t)1, (size_t)(sizeofbuf), (file)))

#define JFWRITE(file, buf, sizeofbuf) \

  ((size_t)fwrite((const void *)(buf), (size_t)1, (size_t)(sizeofbuf), (file)))