zlib121/zutil.h
author Ryan C. Gordon <icculus@icculus.org>
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/* zutil.h -- internal interface and configuration of the compression library
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 * Copyright (C) 1995-2003 Jean-loup Gailly.
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 * For conditions of distribution and use, see copyright notice in zlib.h
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 */
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/* WARNING: this file should *not* be used by applications. It is
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   part of the implementation of the compression library and is
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   subject to change. Applications should only use zlib.h.
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 */
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/* @(#) $Id: zutil.h,v 1.1 2003/12/07 05:29:20 icculus Exp $ */
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#ifndef ZUTIL_H
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#define ZUTIL_H
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#define ZLIB_INTERNAL
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#include "zlib.h"
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#ifdef STDC
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#  include <stddef.h>
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#  include <string.h>
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#  include <stdlib.h>
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#endif
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#ifdef NO_ERRNO_H
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    extern int errno;
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#else
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#   include <errno.h>
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#endif
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#ifndef local
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#  define local static
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#endif
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/* compile with -Dlocal if your debugger can't find static symbols */
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typedef unsigned char  uch;
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typedef uch FAR uchf;
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typedef unsigned short ush;
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typedef ush FAR ushf;
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typedef unsigned long  ulg;
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extern const char * const z_errmsg[10]; /* indexed by 2-zlib_error */
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/* (size given to avoid silly warnings with Visual C++) */
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#define ERR_MSG(err) z_errmsg[Z_NEED_DICT-(err)]
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#define ERR_RETURN(strm,err) \
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  return (strm->msg = (char*)ERR_MSG(err), (err))
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/* To be used only when the state is known to be valid */
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        /* common constants */
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#ifndef DEF_WBITS
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#  define DEF_WBITS MAX_WBITS
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#endif
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/* default windowBits for decompression. MAX_WBITS is for compression only */
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#if MAX_MEM_LEVEL >= 8
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#  define DEF_MEM_LEVEL 8
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#else
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#  define DEF_MEM_LEVEL  MAX_MEM_LEVEL
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#endif
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/* default memLevel */
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#define STORED_BLOCK 0
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#define STATIC_TREES 1
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#define DYN_TREES    2
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/* The three kinds of block type */
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#define MIN_MATCH  3
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#define MAX_MATCH  258
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/* The minimum and maximum match lengths */
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#define PRESET_DICT 0x20 /* preset dictionary flag in zlib header */
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        /* target dependencies */
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#if defined(MSDOS) || (defined(WINDOWS) && !defined(WIN32))
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#  define OS_CODE  0x00
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#  if defined(__TURBOC__) || defined(__BORLANDC__)
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#    if(__STDC__ == 1) && (defined(__LARGE__) || defined(__COMPACT__))
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       /* Allow compilation with ANSI keywords only enabled */
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       void _Cdecl farfree( void *block );
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       void *_Cdecl farmalloc( unsigned long nbytes );
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#    else
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#      include <alloc.h>
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#    endif
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#  else /* MSC or DJGPP */
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#    include <malloc.h>
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#  endif
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#endif
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#ifdef AMIGA
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#  define OS_CODE  0x01
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#endif
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#if defined(VAXC) || defined(VMS)
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#  define OS_CODE  0x02
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#  define F_OPEN(name, mode) \
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     fopen((name), (mode), "mbc=60", "ctx=stm", "rfm=fix", "mrs=512")
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#endif
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#if defined(ATARI) || defined(atarist)
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#  define OS_CODE  0x05
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#endif
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#ifdef OS2
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#  define OS_CODE  0x06
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#endif
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#if defined(MACOS) || defined(TARGET_OS_MAC)
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#  define OS_CODE  0x07
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#  if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os
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#    include <unix.h> /* for fdopen */
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#  else
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#    ifndef fdopen
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#      define fdopen(fd,mode) NULL /* No fdopen() */
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#    endif
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#  endif
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#endif
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#ifdef TOPS20
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#  define OS_CODE  0x0a
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#endif
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#ifdef WIN32
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#  ifndef __CYGWIN__  /* Cygwin is Unix, not Win32 */
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#    define OS_CODE  0x0b
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#  endif
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#endif
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#ifdef __50SERIES /* Prime/PRIMOS */
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#  define OS_CODE  0x0f
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#endif
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#if defined(_BEOS_) || defined(RISCOS)
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#  define fdopen(fd,mode) NULL /* No fdopen() */
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#endif
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#if (defined(_MSC_VER) && (_MSC_VER > 600))
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#  if defined(_WIN32_WCE)
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#    define fdopen(fd,mode) NULL /* No fdopen() */
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#    ifndef _PTRDIFF_T_DEFINED
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       typedef int ptrdiff_t;
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#      define _PTRDIFF_T_DEFINED
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#    endif
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#  else
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#    define fdopen(fd,type)  _fdopen(fd,type)
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#  endif
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#endif
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        /* common defaults */
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#ifndef OS_CODE
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#  define OS_CODE  0x03  /* assume Unix */
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#endif
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#ifndef F_OPEN
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#  define F_OPEN(name, mode) fopen((name), (mode))
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#endif
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         /* functions */
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#if defined(STDC99) || (defined(__TURBOC__) && __TURBOC__ >= 0x550)
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#  ifndef HAVE_VSNPRINTF
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#    define HAVE_VSNPRINTF
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#  endif
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#endif
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#if defined(__CYGWIN__)
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#  ifndef HAVE_VSNPRINTF
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#    define HAVE_VSNPRINTF
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#  endif
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#endif
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#ifndef HAVE_VSNPRINTF
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#  ifdef MSDOS
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     /* vsnprintf may exist on some MS-DOS compilers (DJGPP?),
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        but for now we just assume it doesn't. */
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#    define NO_vsnprintf
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#  endif
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#  ifdef __TURBOC__
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#    define NO_vsnprintf
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#  endif
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#  ifdef WIN32
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     /* In Win32, vsnprintf is available as the "non-ANSI" _vsnprintf. */
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#    if !defined(vsnprintf) && !defined(NO_vsnprintf)
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#      define vsnprintf _vsnprintf
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#    endif
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#  endif
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#  ifdef __SASC
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#    define NO_vsnprintf
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#  endif
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#endif
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#ifdef HAVE_STRERROR
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   extern char *strerror OF((int));
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#  define zstrerror(errnum) strerror(errnum)
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#else
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#  define zstrerror(errnum) ""
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#endif
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#if defined(pyr)
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#  define NO_MEMCPY
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#endif
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#if defined(SMALL_MEDIUM) && !defined(_MSC_VER) && !defined(__SC__)
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 /* Use our own functions for small and medium model with MSC <= 5.0.
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  * You may have to use the same strategy for Borland C (untested).
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  * The __SC__ check is for Symantec.
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  */
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#  define NO_MEMCPY
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#endif
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#if defined(STDC) && !defined(HAVE_MEMCPY) && !defined(NO_MEMCPY)
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#  define HAVE_MEMCPY
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#endif
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#ifdef HAVE_MEMCPY
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#  ifdef SMALL_MEDIUM /* MSDOS small or medium model */
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#    define zmemcpy _fmemcpy
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#    define zmemcmp _fmemcmp
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#    define zmemzero(dest, len) _fmemset(dest, 0, len)
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#  else
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#    define zmemcpy memcpy
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#    define zmemcmp memcmp
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#    define zmemzero(dest, len) memset(dest, 0, len)
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#  endif
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#else
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   extern void zmemcpy  OF((Bytef* dest, const Bytef* source, uInt len));
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   extern int  zmemcmp  OF((const Bytef* s1, const Bytef* s2, uInt len));
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   extern void zmemzero OF((Bytef* dest, uInt len));
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#endif
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/* Diagnostic functions */
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#ifdef DEBUG
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#  include <stdio.h>
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   extern int z_verbose;
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   extern void z_error    OF((char *m));
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#  define Assert(cond,msg) {if(!(cond)) z_error(msg);}
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#  define Trace(x) {if (z_verbose>=0) fprintf x ;}
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#  define Tracev(x) {if (z_verbose>0) fprintf x ;}
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#  define Tracevv(x) {if (z_verbose>1) fprintf x ;}
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#  define Tracec(c,x) {if (z_verbose>0 && (c)) fprintf x ;}
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#  define Tracecv(c,x) {if (z_verbose>1 && (c)) fprintf x ;}
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#else
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#  define Assert(cond,msg)
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#  define Trace(x)
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#  define Tracev(x)
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#  define Tracevv(x)
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#  define Tracec(c,x)
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#  define Tracecv(c,x)
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#endif
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voidpf zcalloc OF((voidpf opaque, unsigned items, unsigned size));
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void   zcfree  OF((voidpf opaque, voidpf ptr));
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#define ZALLOC(strm, items, size) \
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           (*((strm)->zalloc))((strm)->opaque, (items), (size))
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#define ZFREE(strm, addr)  (*((strm)->zfree))((strm)->opaque, (voidpf)(addr))
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#define TRY_FREE(s, p) {if (p) ZFREE(s, p);}
691c1eadb8b7 Upgraded internal zlib to 1.2.1 (thanks, Adam!)
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691c1eadb8b7 Upgraded internal zlib to 1.2.1 (thanks, Adam!)
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#endif /* ZUTIL_H */