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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 Cygnus eCos Public License |
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14 // Version 1.0 (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://sourceware.cygnus.com/ecos |
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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 Cygnus Operating System, released |
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24 // September 30, 1998. |
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25 // |
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26 // The Initial Developer of the Original Code is Cygnus. Portions created |
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27 // by Cygnus are Copyright (C) 1998,1999 Cygnus Solutions. All Rights Reserved. |
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28 // ------------------------------------------- |
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29 // |
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30 //####COPYRIGHTEND#### |
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31 //======================================================================== |
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32 //#####DESCRIPTIONBEGIN#### |
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33 // |
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34 // Author(s): jlarmour |
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35 // Contributors: jlarmour |
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36 // Date: 1999-03-17 |
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37 // Purpose: |
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38 // Description: |
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39 // Usage: #include <stdlib.h> |
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40 // |
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41 //####DESCRIPTIONEND#### |
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42 // |
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43 //======================================================================== |
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44 |
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45 // CONFIGURATION |
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46 |
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47 #include <pkgconf/libc.h> // Configuration header |
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48 |
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49 // INCLUDES |
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50 |
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51 #include <cyg/infra/cyg_type.h> // Common type definitions and support |
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52 #include <stddef.h> // NULL, wchar_t and size_t from compiler |
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53 #include <limits.h> // for INT_MAX definition used below |
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54 |
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55 // CONSTANTS |
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56 |
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57 // as described in ISO para 7.10 |
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58 |
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59 // codes to pass to exit() |
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60 |
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61 // Successful exit status - must be zero (POSIX 1003.1 8.1) |
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62 #define EXIT_SUCCESS 0 |
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63 // Failing exit status - must be non-zero (POSIX 1003.1 8.1) |
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64 #define EXIT_FAILURE 1 |
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65 |
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66 // Maximum value returned by rand() |
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67 |
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68 #define RAND_MAX INT_MAX |
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69 |
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70 |
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71 // Maximum number of bytes in a multibyte character for the current locale |
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72 |
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73 #define MB_CUR_MAX 1 |
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74 |
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75 |
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76 // TYPE DEFINITIONS |
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77 |
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78 // as described in ANSI para 7.10 |
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79 |
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80 // return type of the div() function |
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81 |
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82 typedef struct { |
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83 int quot; // quotient |
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84 int rem; // remainder |
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85 } div_t; |
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86 |
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87 |
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88 // return type of the ldiv() function |
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89 |
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90 typedef struct { |
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91 long quot; // quotient |
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92 long rem; // remainder |
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93 } ldiv_t; |
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94 |
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95 // Unofficial type of comparison function used by both bsearch() and |
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96 // qsort() |
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97 |
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98 typedef int (*Cyg_comparison_fn_t)(const void * /* object1 */, |
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99 const void * /* object2 */); |
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100 |
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101 // Similarly, type of function used by atexit() |
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102 typedef void (*Cyg_libc_atexit_fn_t)( void ); |
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103 |
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104 |
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105 // FUNCTION PROTOTYPES |
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106 |
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107 //======================================================================== |
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108 |
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109 // 7.10.1 String conversion functions |
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110 |
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111 externC double |
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112 atof( const char * /* double_str */ ); |
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113 |
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114 externC int |
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115 atoi( const char * /* int_str */ ); |
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116 |
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117 externC long |
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118 atol( const char * /* long_str */ ); |
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119 |
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120 externC double |
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121 strtod( const char * /* double_str */, char ** /* endptr */ ); |
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122 |
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123 externC long |
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124 strtol( const char * /* long_str */, char ** /* endptr */, |
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125 int /* base */ ); |
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126 |
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127 externC unsigned long |
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128 strtoul( const char * /* ulong_str */, char ** /* endptr */, |
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129 int /* base */ ); |
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130 |
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131 //======================================================================== |
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132 |
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133 // 7.10.2 Pseudo-random sequence generation functions |
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134 |
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135 externC int |
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136 rand( void ); |
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137 |
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138 externC void |
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139 srand( unsigned int /* seed */ ); |
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140 |
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141 // POSIX 1003.1 section 8.3.8 rand_r() |
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142 externC int |
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143 rand_r( unsigned int * /* seed */ ); |
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144 |
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145 //======================================================================== |
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146 |
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147 // 7.10.3 Memory management functions |
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148 |
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149 #ifdef CYGPKG_LIBC_MALLOC |
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150 |
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151 externC void * |
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152 calloc( size_t /* num_objects */, size_t /* object_size */ ); |
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153 |
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154 externC void |
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155 free( void * /* ptr */ ); |
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156 |
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157 externC void * |
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158 malloc( size_t /* size */ ); |
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159 |
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160 externC void * |
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161 realloc( void * /* ptr */, size_t /* size */ ); |
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162 |
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163 #endif // ifdef CYGPKG_LIBC_MALLOC |
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164 |
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165 //======================================================================== |
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166 |
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167 // 7.10.4 Communication with the environment |
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168 |
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169 externC void |
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170 abort( void ) CYGBLD_ATTRIB_NORET; |
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171 |
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172 externC int |
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173 atexit( Cyg_libc_atexit_fn_t /* func_to_register */ ); |
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174 |
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175 externC void |
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176 exit( int /* status */ ) CYGBLD_ATTRIB_NORET; |
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177 |
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178 /* POSIX 1003.1 section 3.2.2 "Terminate a process" */ |
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179 |
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180 externC void |
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181 _exit( int /* status */ ) CYGBLD_ATTRIB_NORET; |
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182 |
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183 externC char * |
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184 getenv( const char * /* name */ ); |
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185 |
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186 externC int |
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187 system( const char * /* command */ ); |
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188 |
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189 |
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190 //======================================================================== |
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191 |
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192 // 7.10.5 Searching and sorting utilities |
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193 |
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194 externC void * |
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195 bsearch( const void * /* search_key */, const void * /* first_object */, |
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196 size_t /* num_objects */, size_t /* object_size */, |
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197 Cyg_comparison_fn_t /* comparison_fn */ ); |
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198 |
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199 externC void |
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200 qsort( void * /* first_object */, size_t /* num_objects */, |
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201 size_t /* object_size */, Cyg_comparison_fn_t /* comparison_fn */ ); |
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202 |
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203 |
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204 //======================================================================== |
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205 |
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206 // 7.10.6 Integer arithmetic functions |
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207 |
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208 externC int |
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209 abs( int /* val */ ) CYGBLD_ATTRIB_CONST; |
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210 |
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211 externC div_t |
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212 div( int /* numerator */, int /* denominator */ ) CYGBLD_ATTRIB_CONST; |
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213 |
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214 externC long |
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215 labs( long /* val */ ) CYGBLD_ATTRIB_CONST; |
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216 |
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217 externC ldiv_t |
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218 ldiv( long /* numerator */, long /* denominator */ ) CYGBLD_ATTRIB_CONST; |
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219 |
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220 //======================================================================== |
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221 |
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222 // NON-STANDARD FUNCTIONS |
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223 |
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224 ///////////////////// |
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225 // cyg_libc_itoa() // |
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226 ///////////////////// |
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227 // |
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228 // This converts num to a string and puts it into s padding with |
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229 // "0"'s if padzero is set, or spaces otherwise if necessary. |
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230 // The number of chars written to s is returned |
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231 // |
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232 |
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233 externC cyg_uint8 |
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234 cyg_libc_itoa( cyg_uint8 *__s, cyg_int32 __num, cyg_uint8 __width, |
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235 cyg_bool __padzero ); |
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236 |
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237 //======================================================================== |
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238 |
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239 |
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240 // INLINE FUNCTIONS |
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241 |
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242 #ifdef CYGIMP_LIBC_STDLIB_INLINES |
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243 #include <stdlib.inl> |
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244 #endif |
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245 |
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246 #endif // CYGONCE_LIBC_STDLIB_H multiple inclusion protection |
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247 |
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248 // EOF stdlib.h |
