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annotate packages/language/c/libc/current/include/stdlib.h @ 66:bf00f99aec69 ecos-sw-2000-02-02

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Merge from eCos master repository on 2000-02-02-19:16:44-GMT
author jlarmour
date Wed, 02 Feb 2000 19:57:02 +0000
parents c38311975d4f
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1 #ifndef CYGONCE_LIBC_STDLIB_H
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2 #define CYGONCE_LIBC_STDLIB_H
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3 //========================================================================
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4 //
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5 // stdlib.h
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6 //
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7 // ISO C standard utility functions (ISO C standard section 7.10)
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8 //
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9 //========================================================================
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10 //####COPYRIGHTBEGIN####
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11 //
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12 // -------------------------------------------
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13 // The contents of this file are subject to the Red Hat eCos Public License
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14 // Version 1.1 (the "License"); you may not use this file except in
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15 // compliance with the License. You may obtain a copy of the License at
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16 // http://www.redhat.com/
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17 //
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18 // Software distributed under the License is distributed on an "AS IS"
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19 // basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
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20 // License for the specific language governing rights and limitations under
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21 // the License.
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22 //
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23 // The Original Code is eCos - Embedded Configurable Operating System,
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24 // released September 30, 1998.
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25 //
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26 // The Initial Developer of the Original Code is Red Hat.
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27 // Portions created by Red Hat are
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28 // Copyright (C) 1998, 1999, 2000 Red Hat, Inc.
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29 // All Rights Reserved.
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30 // -------------------------------------------
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31 //
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32 //####COPYRIGHTEND####
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33 //========================================================================
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34 //#####DESCRIPTIONBEGIN####
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35 //
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36 // Author(s): jlarmour
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37 // Contributors: jlarmour
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38 // Date: 1999-03-17
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39 // Purpose:
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40 // Description:
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41 // Usage: #include <stdlib.h>
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42 //
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43 //####DESCRIPTIONEND####
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44 //
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45 //========================================================================
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46
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47 // CONFIGURATION
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48
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49 #include <pkgconf/libc.h> // Configuration header
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50
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51 // INCLUDES
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52
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53 #include <cyg/infra/cyg_type.h> // Common type definitions and support
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54 #include <stddef.h> // NULL, wchar_t and size_t from compiler
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55 #include <limits.h> // for INT_MAX definition used below
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56
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57 // CONSTANTS
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58
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59 // as described in ISO para 7.10
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60
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61 // codes to pass to exit()
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62
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63 // Successful exit status - must be zero (POSIX 1003.1 8.1)
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64 #define EXIT_SUCCESS 0
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65 // Failing exit status - must be non-zero (POSIX 1003.1 8.1)
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66 #define EXIT_FAILURE 1
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67
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68 // Maximum value returned by rand()
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69
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70 #define RAND_MAX INT_MAX
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71
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72
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73 // Maximum number of bytes in a multibyte character for the current locale
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74
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75 #define MB_CUR_MAX 1
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76
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77
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78 // TYPE DEFINITIONS
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79
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80 // as described in ANSI para 7.10
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81
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82 // return type of the div() function
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83
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84 typedef struct {
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85 int quot; // quotient
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86 int rem; // remainder
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87 } div_t;
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88
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89
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90 // return type of the ldiv() function
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91
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92 typedef struct {
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93 long quot; // quotient
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94 long rem; // remainder
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95 } ldiv_t;
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96
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97 // Unofficial type of comparison function used by both bsearch() and
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98 // qsort()
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99
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100 typedef int (*Cyg_comparison_fn_t)(const void * /* object1 */,
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101 const void * /* object2 */);
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102
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103 // Similarly, type of function used by atexit()
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104 typedef void (*Cyg_libc_atexit_fn_t)( void );
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105
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106
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107 // FUNCTION PROTOTYPES
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108
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109 //========================================================================
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110
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111 // 7.10.1 String conversion functions
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112
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113 externC double
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114 atof( const char * /* double_str */ );
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115
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116 externC int
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117 atoi( const char * /* int_str */ );
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118
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119 externC long
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120 atol( const char * /* long_str */ );
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121
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122 externC double
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123 strtod( const char * /* double_str */, char ** /* endptr */ );
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124
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125 externC long
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126 strtol( const char * /* long_str */, char ** /* endptr */,
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127 int /* base */ );
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128
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129 externC unsigned long
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130 strtoul( const char * /* ulong_str */, char ** /* endptr */,
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131 int /* base */ );
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132
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133 //========================================================================
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134
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135 // 7.10.2 Pseudo-random sequence generation functions
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136
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137 externC int
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138 rand( void );
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139
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140 externC void
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141 srand( unsigned int /* seed */ );
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142
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143 // POSIX 1003.1 section 8.3.8 rand_r()
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144 externC int
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145 rand_r( unsigned int * /* seed */ );
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146
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147 //========================================================================
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148
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149 // 7.10.3 Memory management functions
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150
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151 #ifdef CYGPKG_LIBC_MALLOC
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152
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153 externC void *
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154 calloc( size_t /* num_objects */, size_t /* object_size */ );
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155
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156 externC void
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157 free( void * /* ptr */ );
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158
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159 externC void *
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160 malloc( size_t /* size */ );
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161
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162 externC void *
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163 realloc( void * /* ptr */, size_t /* size */ );
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164
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165 #endif // ifdef CYGPKG_LIBC_MALLOC
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166
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167 //========================================================================
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168
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169 // 7.10.4 Communication with the environment
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170
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171 externC void
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172 abort( void ) CYGBLD_ATTRIB_NORET;
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173
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174 externC int
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175 atexit( Cyg_libc_atexit_fn_t /* func_to_register */ );
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176
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177 externC void
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178 exit( int /* status */ ) CYGBLD_ATTRIB_NORET;
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179
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180 /* POSIX 1003.1 section 3.2.2 "Terminate a process" */
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181
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182 externC void
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183 _exit( int /* status */ ) CYGBLD_ATTRIB_NORET;
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184
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185 externC char *
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186 getenv( const char * /* name */ );
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187
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188 externC int
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189 system( const char * /* command */ );
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190
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191
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192 //========================================================================
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193
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194 // 7.10.5 Searching and sorting utilities
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195
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196 externC void *
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197 bsearch( const void * /* search_key */, const void * /* first_object */,
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198 size_t /* num_objects */, size_t /* object_size */,
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199 Cyg_comparison_fn_t /* comparison_fn */ );
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200
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201 externC void
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202 qsort( void * /* first_object */, size_t /* num_objects */,
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203 size_t /* object_size */, Cyg_comparison_fn_t /* comparison_fn */ );
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204
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205
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206 //========================================================================
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207
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208 // 7.10.6 Integer arithmetic functions
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209
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210 externC int
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211 abs( int /* val */ ) CYGBLD_ATTRIB_CONST;
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212
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213 externC div_t
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214 div( int /* numerator */, int /* denominator */ ) CYGBLD_ATTRIB_CONST;
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215
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216 externC long
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217 labs( long /* val */ ) CYGBLD_ATTRIB_CONST;
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218
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219 externC ldiv_t
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220 ldiv( long /* numerator */, long /* denominator */ ) CYGBLD_ATTRIB_CONST;
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221
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222 //========================================================================
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223
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224 // NON-STANDARD FUNCTIONS
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225
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226 /////////////////////
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227 // cyg_libc_itoa() //
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228 /////////////////////
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229 //
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230 // This converts num to a string and puts it into s padding with
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231 // "0"'s if padzero is set, or spaces otherwise if necessary.
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232 // The number of chars written to s is returned
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233 //
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234
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235 externC cyg_uint8
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236 cyg_libc_itoa( cyg_uint8 *__s, cyg_int32 __num, cyg_uint8 __width,
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237 cyg_bool __padzero );
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238
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239 //========================================================================
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240
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241
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242 // INLINE FUNCTIONS
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243
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244 #ifdef CYGIMP_LIBC_STDLIB_INLINES
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245 #include <stdlib.inl>
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246 #endif
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247
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248 #endif // CYGONCE_LIBC_STDLIB_H multiple inclusion protection
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249
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250 // EOF stdlib.h