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- /*
- * jinclude.h
- *
- * Copyright (C) 1991, Thomas G. Lane.
- * This file is part of the Independent JPEG Group's software.
- * For conditions of distribution and use, see the accompanying README file.
- *
- * This is the central file that's #include'd by all the JPEG .c files.
- * Its purpose is to provide a single place to fix any problems with
- * including the wrong system include files.
- * You can edit these declarations if you use a system with nonstandard
- * system include files.
- */
-
-
- /*
- * Normally the __STDC__ macro can be taken as indicating that the system
- * include files conform to the ANSI C standard. However, if you are running
- * GCC on a machine with non-ANSI system include files, that is not the case.
- * In that case change the following, or add -DNONANSI_INCLUDES to your CFLAGS.
- */
-
- #ifdef __STDC__
- #ifndef NONANSI_INCLUDES
- #define INCLUDES_ARE_ANSI /* this is what's tested before including */
- #endif
- #endif
-
- /*
- * <stdio.h> is included to get the FILE typedef and NULL macro.
- * Note that the core portable-JPEG files do not actually do any I/O
- * using the stdio library; only the user interface, error handler,
- * and file reading/writing modules invoke any stdio functions.
- * (Well, we did cheat a bit in jvirtmem.c, but only if MEM_STATS is defined.)
- */
-
- #include <stdio.h>
-
- /*
- * We need the size_t typedef, which defines the parameter type of malloc().
- * In an ANSI-conforming implementation this is provided by <stdio.h>,
- * but on non-ANSI systems it's more likely to be in <sys/types.h>.
- * On some not-quite-ANSI systems you may find it in <stddef.h>.
- */
-
- #ifndef INCLUDES_ARE_ANSI /* shouldn't need this if ANSI C */
- #include <sys/types.h>
- #endif
- #ifdef __SASC /* Amiga SAS C provides it in stddef.h. */
- #include <stddef.h>
- #endif
-
- /*
- * In ANSI C, and indeed any rational implementation, size_t is also the
- * type returned by sizeof(). However, it seems there are some irrational
- * implementations out there, in which sizeof() returns an int even though
- * size_t is defined as long or unsigned long. To ensure consistent results
- * we always use this SIZEOF() macro in place of using sizeof() directly.
- */
-
- #undef SIZEOF /* in case you included X11/xmd.h */
- #define SIZEOF(object) ((size_t) sizeof(object))
-
- /*
- * fread() and fwrite() are always invoked through these macros.
- * On some systems you may need to twiddle the argument casts.
- * CAUTION: argument order is different from underlying functions!
- */
-
- #define FREAD(file,buf,sizeofbuf) \
- ((size_t) fread((void *) (buf), (size_t) 1, (size_t) (sizeofbuf), (file)))
- #define FWRITE(file,buf,sizeofbuf) \
- ((size_t) fwrite((const void *) (buf), (size_t) 1, (size_t) (sizeofbuf), (file)))
-
- /*
- * We need the memcpy() and strcmp() functions, plus memory zeroing.
- * ANSI and System V implementations declare these in <string.h>.
- * BSD doesn't have the mem() functions, but it does have bcopy()/bzero().
- * NOTE: we assume the size parameters to these functions are of type size_t.
- * Insert casts in these macros if not!
- */
-
- #ifdef INCLUDES_ARE_ANSI
- #include <string.h>
- #define MEMZERO(voidptr,size) memset((voidptr), 0, (size))
- #else /* not ANSI */
- #ifdef BSD
- #include <strings.h>
- #define MEMZERO(voidptr,size) bzero((voidptr), (size))
- #define memcpy(dest,src,size) bcopy((src), (dest), (size))
- #else /* not BSD, assume Sys V or compatible */
- #include <string.h>
- #define MEMZERO(voidptr,size) memset((voidptr), 0, (size))
- #endif /* BSD */
- #endif /* ANSI */
-
-
- /* Now include the portable JPEG definition files. */
-
- #include "jconfig.h"
-
- #include "jpegdata.h"
-