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annotate zlib/zutil.h @ 1797:5ff8f0d28188

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Make sure there are no races between main thread and audio thread around mix_buf. Fix lack of proper termination in shader loading code
author Mike Pavone <pavone@retrodev.com>
date Sun, 24 Mar 2019 13:31:22 -0700
parents 00d788dac91a
children
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1 /* zutil.h -- internal interface and configuration of the compression library
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2 * Copyright (C) 1995-2016 Jean-loup Gailly, Mark Adler
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3 * For conditions of distribution and use, see copyright notice in zlib.h
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4 */
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5
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6 /* WARNING: this file should *not* be used by applications. It is
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7 part of the implementation of the compression library and is
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8 subject to change. Applications should only use zlib.h.
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9 */
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10
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11 /* @(#) $Id$ */
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12
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13 #ifndef ZUTIL_H
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14 #define ZUTIL_H
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15
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16 #ifdef HAVE_HIDDEN
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17 # define ZLIB_INTERNAL __attribute__((visibility ("hidden")))
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18 #else
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19 # define ZLIB_INTERNAL
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20 #endif
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21
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22 #include "zlib.h"
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23
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24 #if defined(STDC) && !defined(Z_SOLO)
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25 # if !(defined(_WIN32_WCE) && defined(_MSC_VER))
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26 # include <stddef.h>
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27 # endif
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28 # include <string.h>
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29 # include <stdlib.h>
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30 #endif
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31
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32 #ifdef Z_SOLO
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33 typedef long ptrdiff_t; /* guess -- will be caught if guess is wrong */
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34 #endif
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35
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36 #ifndef local
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37 # define local static
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38 #endif
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39 /* since "static" is used to mean two completely different things in C, we
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40 define "local" for the non-static meaning of "static", for readability
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41 (compile with -Dlocal if your debugger can't find static symbols) */
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42
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43 typedef unsigned char uch;
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44 typedef uch FAR uchf;
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45 typedef unsigned short ush;
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46 typedef ush FAR ushf;
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47 typedef unsigned long ulg;
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48
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49 extern z_const char * const z_errmsg[10]; /* indexed by 2-zlib_error */
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50 /* (size given to avoid silly warnings with Visual C++) */
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51
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52 #define ERR_MSG(err) z_errmsg[Z_NEED_DICT-(err)]
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53
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54 #define ERR_RETURN(strm,err) \
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55 return (strm->msg = ERR_MSG(err), (err))
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56 /* To be used only when the state is known to be valid */
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57
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58 /* common constants */
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59
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60 #ifndef DEF_WBITS
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61 # define DEF_WBITS MAX_WBITS
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62 #endif
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63 /* default windowBits for decompression. MAX_WBITS is for compression only */
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64
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65 #if MAX_MEM_LEVEL >= 8
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66 # define DEF_MEM_LEVEL 8
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67 #else
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68 # define DEF_MEM_LEVEL MAX_MEM_LEVEL
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69 #endif
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70 /* default memLevel */
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71
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72 #define STORED_BLOCK 0
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73 #define STATIC_TREES 1
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74 #define DYN_TREES 2
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75 /* The three kinds of block type */
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76
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77 #define MIN_MATCH 3
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78 #define MAX_MATCH 258
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79 /* The minimum and maximum match lengths */
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80
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81 #define PRESET_DICT 0x20 /* preset dictionary flag in zlib header */
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82
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83 /* target dependencies */
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84
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85 #if defined(MSDOS) || (defined(WINDOWS) && !defined(WIN32))
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86 # define OS_CODE 0x00
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87 # ifndef Z_SOLO
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88 # if defined(__TURBOC__) || defined(__BORLANDC__)
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89 # if (__STDC__ == 1) && (defined(__LARGE__) || defined(__COMPACT__))
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90 /* Allow compilation with ANSI keywords only enabled */
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91 void _Cdecl farfree( void *block );
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92 void *_Cdecl farmalloc( unsigned long nbytes );
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93 # else
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94 # include <alloc.h>
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95 # endif
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96 # else /* MSC or DJGPP */
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97 # include <malloc.h>
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98 # endif
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99 # endif
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100 #endif
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101
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102 #ifdef AMIGA
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103 # define OS_CODE 1
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104 #endif
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105
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106 #if defined(VAXC) || defined(VMS)
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107 # define OS_CODE 2
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108 # define F_OPEN(name, mode) \
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109 fopen((name), (mode), "mbc=60", "ctx=stm", "rfm=fix", "mrs=512")
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110 #endif
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111
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112 #ifdef __370__
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113 # if __TARGET_LIB__ < 0x20000000
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114 # define OS_CODE 4
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115 # elif __TARGET_LIB__ < 0x40000000
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116 # define OS_CODE 11
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117 # else
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118 # define OS_CODE 8
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119 # endif
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120 #endif
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121
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122 #if defined(ATARI) || defined(atarist)
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123 # define OS_CODE 5
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124 #endif
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125
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126 #ifdef OS2
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127 # define OS_CODE 6
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128 # if defined(M_I86) && !defined(Z_SOLO)
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129 # include <malloc.h>
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130 # endif
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131 #endif
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132
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133 #if defined(MACOS) || defined(TARGET_OS_MAC)
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134 # define OS_CODE 7
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135 # ifndef Z_SOLO
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136 # if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os
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137 # include <unix.h> /* for fdopen */
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138 # else
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139 # ifndef fdopen
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140 # define fdopen(fd,mode) NULL /* No fdopen() */
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141 # endif
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142 # endif
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143 # endif
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144 #endif
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145
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146 #ifdef __acorn
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147 # define OS_CODE 13
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148 #endif
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149
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150 #if defined(WIN32) && !defined(__CYGWIN__)
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151 # define OS_CODE 10
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152 #endif
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153
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154 #ifdef _BEOS_
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155 # define OS_CODE 16
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156 #endif
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157
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158 #ifdef __TOS_OS400__
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159 # define OS_CODE 18
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160 #endif
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161
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162 #ifdef __APPLE__
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163 # define OS_CODE 19
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164 #endif
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165
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166 #if defined(_BEOS_) || defined(RISCOS)
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167 # define fdopen(fd,mode) NULL /* No fdopen() */
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168 #endif
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169
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170 #if (defined(_MSC_VER) && (_MSC_VER > 600)) && !defined __INTERIX
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171 # if defined(_WIN32_WCE)
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172 # define fdopen(fd,mode) NULL /* No fdopen() */
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173 # ifndef _PTRDIFF_T_DEFINED
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174 typedef int ptrdiff_t;
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175 # define _PTRDIFF_T_DEFINED
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176 # endif
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177 # else
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178 # define fdopen(fd,type) _fdopen(fd,type)
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179 # endif
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180 #endif
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181
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182 #if defined(__BORLANDC__) && !defined(MSDOS)
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183 #pragma warn -8004
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184 #pragma warn -8008
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185 #pragma warn -8066
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186 #endif
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187
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188 /* provide prototypes for these when building zlib without LFS */
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189 #if !defined(_WIN32) && \
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190 (!defined(_LARGEFILE64_SOURCE) || _LFS64_LARGEFILE-0 == 0)
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191 ZEXTERN uLong ZEXPORT adler32_combine64 OF((uLong, uLong, z_off_t));
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192 ZEXTERN uLong ZEXPORT crc32_combine64 OF((uLong, uLong, z_off_t));
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193 #endif
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194
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195 /* common defaults */
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196
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197 #ifndef OS_CODE
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198 # define OS_CODE 3 /* assume Unix */
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199 #endif
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200
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201 #ifndef F_OPEN
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202 # define F_OPEN(name, mode) fopen((name), (mode))
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203 #endif
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204
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205 /* functions */
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206
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207 #if defined(pyr) || defined(Z_SOLO)
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208 # define NO_MEMCPY
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209 #endif
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210 #if defined(SMALL_MEDIUM) && !defined(_MSC_VER) && !defined(__SC__)
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211 /* Use our own functions for small and medium model with MSC <= 5.0.
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212 * You may have to use the same strategy for Borland C (untested).
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213 * The __SC__ check is for Symantec.
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214 */
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215 # define NO_MEMCPY
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216 #endif
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217 #if defined(STDC) && !defined(HAVE_MEMCPY) && !defined(NO_MEMCPY)
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218 # define HAVE_MEMCPY
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219 #endif
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220 #ifdef HAVE_MEMCPY
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221 # ifdef SMALL_MEDIUM /* MSDOS small or medium model */
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222 # define zmemcpy _fmemcpy
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223 # define zmemcmp _fmemcmp
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224 # define zmemzero(dest, len) _fmemset(dest, 0, len)
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225 # else
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226 # define zmemcpy memcpy
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227 # define zmemcmp memcmp
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228 # define zmemzero(dest, len) memset(dest, 0, len)
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229 # endif
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230 #else
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231 void ZLIB_INTERNAL zmemcpy OF((Bytef* dest, const Bytef* source, uInt len));
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232 int ZLIB_INTERNAL zmemcmp OF((const Bytef* s1, const Bytef* s2, uInt len));
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233 void ZLIB_INTERNAL zmemzero OF((Bytef* dest, uInt len));
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234 #endif
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235
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236 /* Diagnostic functions */
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237 #ifdef ZLIB_DEBUG
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238 # include <stdio.h>
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239 extern int ZLIB_INTERNAL z_verbose;
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240 extern void ZLIB_INTERNAL z_error OF((char *m));
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241 # define Assert(cond,msg) {if(!(cond)) z_error(msg);}
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242 # define Trace(x) {if (z_verbose>=0) fprintf x ;}
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243 # define Tracev(x) {if (z_verbose>0) fprintf x ;}
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244 # define Tracevv(x) {if (z_verbose>1) fprintf x ;}
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245 # define Tracec(c,x) {if (z_verbose>0 && (c)) fprintf x ;}
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246 # define Tracecv(c,x) {if (z_verbose>1 && (c)) fprintf x ;}
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247 #else
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248 # define Assert(cond,msg)
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249 # define Trace(x)
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250 # define Tracev(x)
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251 # define Tracevv(x)
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252 # define Tracec(c,x)
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253 # define Tracecv(c,x)
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254 #endif
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255
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256 #ifndef Z_SOLO
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257 voidpf ZLIB_INTERNAL zcalloc OF((voidpf opaque, unsigned items,
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258 unsigned size));
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259 void ZLIB_INTERNAL zcfree OF((voidpf opaque, voidpf ptr));
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260 #endif
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261
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262 #define ZALLOC(strm, items, size) \
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263 (*((strm)->zalloc))((strm)->opaque, (items), (size))
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264 #define ZFREE(strm, addr) (*((strm)->zfree))((strm)->opaque, (voidpf)(addr))
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265 #define TRY_FREE(s, p) {if (p) ZFREE(s, p);}
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266
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267 /* Reverse the bytes in a 32-bit value */
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268 #define ZSWAP32(q) ((((q) >> 24) & 0xff) + (((q) >> 8) & 0xff00) + \
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269 (((q) & 0xff00) << 8) + (((q) & 0xff) << 24))
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270
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271 #endif /* ZUTIL_H */