Mercurial > ecos

annotate packages/language/c/libc/current/include/stdio.h @ 26:4741a3c3496a ecos-sw-1999-07-23

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Merge from eCos master repository on 1999-07-23-05:47:06-BST
author jlarmour
date Fri, 23 Jul 1999 15:20:15 +0000
parents 4f2df4ab82c8
children c38311975d4f
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1 #ifndef CYGONCE_LIBC_STDIO_H
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2 #define CYGONCE_LIBC_STDIO_H
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3 //========================================================================
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4 //
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5 // stdio.h
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6 //
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7 // ISO C standard I/O routines - with some POSIX 1003.1 extensions
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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
2
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35 // Contributors: jlarmour
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36 // Date: 1999-01-19
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37 // Purpose: ISO C standard I/O routines
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38 // Description:
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39 // Usage: #include <stdio.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 // Include the C library?
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50 #ifdef CYGPKG_LIBC
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51
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52 // INCLUDES
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53
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54 #include <cyg/infra/cyg_type.h> // common type definitions and support
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55 #include <stddef.h> // NULL and size_t from compiler
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56 #include <stdarg.h> // va_list from compiler
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57
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58 // CONSTANTS
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59
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60 // Some of these values are odd to ensure that asserts have better effect
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61 // should spurious values be passed to functions expecting these constants.
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62
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63 // _IOFBF, _IOLBF, and _IONBF specify full, line or no buffering when used
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64 // with setvbuf() - ISO C standard chap 7.9.1
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65
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66 #define _IOFBF (-2)
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67 #define _IOLBF (-4)
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68 #define _IONBF (-8)
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69
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70 // EOF is a macro defined to any negative integer constant - ISO C standard
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71 // chap. 7.9.1
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72 #define EOF (-1)
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73
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74 // SEEK_CUR, SEEK_END and SEEK_SET are used with fseek() as position
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75 // anchors - ISO C standard chap. 7.9.1
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76 #define SEEK_SET 0
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77 #define SEEK_CUR 1
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78 #define SEEK_END 2
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79
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80
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81 // TYPE DEFINITIONS
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82
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83 // A type capable of specifying uniquely every file position - ISO C
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84 // standard chap 7.9.1
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85 typedef cyg_ucount32 fpos_t;
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86
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87
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88 // FILE is just cast to an address here. It is uncast internally to the
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89 // C library in stream.hxx as the C++ Cyg_StdioStream class.
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90 // Optional run-time checking can be enabled to ensure that the cast is
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91 // valid, using the standard assertion functionality.
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92 //
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93 // The array size is irrelevant other than being more than 8, and is present
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94 // to stop references to FILEs being marked as able to be put in the small
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95 // data section. We can't just mark it as in the ".data" section as on some
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96 // targets it may actually be ".common". Maybe this doesn't matter?
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97 // FIXME: This doesn't work if things are larger than 16 are put in sdata,
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98 // e.g. on mips by specifying -G 32
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99 typedef CYG_ADDRESS FILE[16];
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100
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101 // EXTERNAL VARIABLES
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102
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103 // Default file streams for input/output. These only need to be
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104 // expressions, not l-values - ISO C standard chap. 7.9.1
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105 //
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106 // cyg_libc_stdio_stdin/out/err aren't really files of course,
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107 // but they are only named here so that we can take the address of
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108 // them, in which case it doesn't matter what type they point to really
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109 //
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110 // CYGPRI_LIBC_STDIO_NO_DEFAULT_STREAMS is used when initializing
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111 // cyg_libc_stdio_stdin/out/err privately inside the C library
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112
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113 #ifndef CYGPRI_LIBC_STDIO_NO_DEFAULT_STREAMS
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114 extern FILE cyg_libc_stdio_stdin, cyg_libc_stdio_stdout,
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115 cyg_libc_stdio_stderr;
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116
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117 #define stdin (&cyg_libc_stdio_stdin)
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118 #define stdout (&cyg_libc_stdio_stdout)
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119 #define stderr (&cyg_libc_stdio_stderr)
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120 #endif
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121
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122 // FUNCTION PROTOTYPES
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123
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124 //========================================================================
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125
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126 // ISO C 7.9.5 File access functions
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127
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128 externC int
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129 fclose( FILE * /* stream */ );
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130
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131 externC int
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132 fflush( FILE * /* stream */ );
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133
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134 externC FILE *
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135 fopen( const char * /* filename */, const char * /* mode */ );
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136
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137 externC FILE *
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138 freopen( const char * /* filename */, const char * /* mode */,
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139 FILE * /* stream */ );
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140
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141 externC void
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142 setbuf( FILE * /* stream */, char * /* buffer */ );
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143
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144 externC int
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145 setvbuf( FILE * /* stream */, char * /* buffer */, int /* mode */,
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146 size_t /* size */ );
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147
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148 //========================================================================
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149
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150 // ISO C 7.9.6 Formatted input/output functions
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151
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152 externC int
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153 fprintf( FILE * /* stream */, const char * /* format */, ... );
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154
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155 externC int
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156 fscanf( FILE * /* stream */, const char * /* format */, ... );
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157
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158 externC int
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159 printf( const char * /* format */, ... );
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160
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161 externC int
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162 scanf( const char * /* format */, ... );
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163
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164 externC int
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165 sprintf( char * /* str */, const char * /* format */, ... );
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166
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167 externC int
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168 sscanf( const char * /* str */, const char * /* format */, ... );
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169
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170 externC int
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171 vfprintf( FILE * /* stream */, const char * /* format */,
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172 va_list /* args */ );
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173
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174 externC int
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175 vprintf( const char * /* format */, va_list /* args */ );
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176
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177 externC int
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178 vsprintf( char * /* str */, const char * /* format */,
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179 va_list /* args */ );
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180
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181 //========================================================================
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182
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183 // ISO C 7.9.7 Character input/output functions
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184
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185 externC int
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186 fgetc( FILE * /* stream */ );
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187
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188 externC char *
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189 fgets( char * /* str */, int /* length */, FILE * /* stream */ );
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190
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191 externC int
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192 fputc( int /* c */, FILE * /* stream */ );
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193
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194 externC int
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195 putc( int /* c */, FILE * /* stream */ );
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196
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197 externC int
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198 putchar( int /* c */ );
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199
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200 externC int
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201 fputs( const char * /* str */, FILE * /* stream */ );
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202
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203 externC char *
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204 gets( char * );
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205
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206 externC int
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207 getc( FILE * /* stream */ );
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208
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209 externC int
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210 getchar( void );
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211
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212 externC int
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213 puts( const char * /* str */ );
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214
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215 externC int
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216 ungetc( int /* c */, FILE * /* stream */ );
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217
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218 // no function equivalent is required for getchar() or putchar(), so we can
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219 // just #define them
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220
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221 #define getchar() fgetc( stdin )
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222
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223 #define putchar(__c) fputc(__c, stdout)
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224
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225 //========================================================================
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226
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227 // ISO C 7.9.8 Direct input/output functions
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228
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229 externC size_t
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230 fread( void * /* ptr */, size_t /* object_size */,
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231 size_t /* num_objects */, FILE * /* stream */ );
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232
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233 externC size_t
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234 fwrite( const void * /* ptr */, size_t /* object_size */,
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235 size_t /* num_objects */, FILE * /* stream */ );
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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 // ISO C 7.9.10 Error-handling functions
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241
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242 externC void
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243 clearerr( FILE * /* stream */ );
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244
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245 externC int
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246 feof( FILE * /* stream */ );
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247
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248 externC int
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249 ferror( FILE * /* stream */ );
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250
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251 externC void
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252 perror( const char * /* prefix_str */ );
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253
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254 //========================================================================
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255
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256 // Other non-ISO C functions
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257
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258 externC int
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259 fnprintf( FILE * /* stream */, size_t /* length */,
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260 const char * /* format */, ... );
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261
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262 externC int
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263 snprintf( char * /* str */, size_t /* length */, const char * /* format */,
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264 ... );
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265
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266 externC int
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267 vfnprintf( FILE * /* stream */, size_t /* length */,
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268 const char * /* format */, va_list /* args */ );
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269
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270 externC int
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271 vsnprintf( char * /* str */, size_t /* length */,
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272 const char * /* format */, va_list /* args */ );
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273
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274 externC int
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275 vscanf( const char * /* format */, va_list /* args */ );
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276
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277 externC int
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278 vsscanf( const char * /* str */, const char * /* format */,
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279 va_list /* args */ );
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280
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281 externC int
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282 vfscanf( FILE * /* stream */, const char * /* format */,
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283 va_list /* args */ );
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284
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285
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286 // INLINE FUNCTIONS
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287
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288 #ifdef CYGIMP_LIBC_STDIO_INLINES
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289 #include <stdio.inl>
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290 #endif
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291
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292 #endif // ifdef CYGPKG_LIBC
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293
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294 #endif // CYGONCE_LIBC_STDIO_H multiple inclusion protection
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295
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296 // EOF stdio.h