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annotate packages/language/c/libc/stdio/current/include/stdio.h @ 134:d2f49caf9e38 ecos-sw-2000-11-03

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Merge from eCos master repository on 2000-11-03-09:00:49-GMT
author jlarmour
date Fri, 03 Nov 2000 21:17:40 +0000
parents 6ed91473a1cd
children e0c0827131d1
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1 #ifndef CYGONCE_LIBC_STDIO_STDIO_H
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2 #define CYGONCE_LIBC_STDIO_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 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:
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38 // Date: 2000-04-19
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39 // Purpose: ISO C standard I/O routines
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40 // Description:
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41 // Usage: Do not include this file directly - use #include <stdio.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_stdio.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 <stdarg.h> // va_list from compiler
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55
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56 // CONSTANTS
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57
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58 // Some of these values are odd to ensure that asserts have better effect
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59 // should spurious values be passed to functions expecting these constants.
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60
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61 // _IOFBF, _IOLBF, and _IONBF specify full, line or no buffering when used
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62 // with setvbuf() - ISO C standard chap 7.9.1
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63
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64 #define _IOFBF (-2)
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65 #define _IOLBF (-4)
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66 #define _IONBF (-8)
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67
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68 // EOF is a macro defined to any negative integer constant - ISO C standard
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69 // chap. 7.9.1
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70 #define EOF (-1)
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71
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72 // SEEK_CUR, SEEK_END and SEEK_SET are used with fseek() as position
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73 // anchors - ISO C standard chap. 7.9.1
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74 #define SEEK_SET 0
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75 #define SEEK_CUR 1
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76 #define SEEK_END 2
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77
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78
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79 // TYPE DEFINITIONS
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80
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81 // A type capable of specifying uniquely every file position - ISO C
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82 // standard chap 7.9.1
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83 typedef cyg_ucount32 fpos_t;
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84
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85
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86 // FILE is just cast to an address here. It is uncast internally to the
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87 // C library in stream.hxx as the C++ Cyg_StdioStream class.
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88 // Optional run-time checking can be enabled to ensure that the cast is
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89 // valid, using the standard assertion functionality.
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90 //
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91 // The array size is irrelevant other than being more than 8, and is present
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92 // to stop references to FILEs being marked as able to be put in the small
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93 // data section. We can't just mark it as in the ".data" section as on some
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94 // targets it may actually be ".common".
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95 typedef CYG_ADDRESS FILE[9999];
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96
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97 // EXTERNAL VARIABLES
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98
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99 // Default file streams for input/output. These only need to be
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100 // expressions, not l-values - ISO C standard chap. 7.9.1
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101 //
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102 // CYGPRI_LIBC_STDIO_NO_DEFAULT_STREAMS is used when initializing
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103 // stdin/out/err privately inside the C library
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104
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105 #ifndef CYGPRI_LIBC_STDIO_NO_DEFAULT_STREAMS
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106 __externC FILE *stdin, *stdout, *stderr;
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107 #endif
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108
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109 // FUNCTION PROTOTYPES
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110
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111 //========================================================================
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112
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113 // ISO C 7.9.5 File access functions
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114
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115 externC int
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116 fclose( FILE * /* stream */ );
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117
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118 externC int
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119 fflush( FILE * /* stream */ );
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120
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121 externC FILE *
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122 fopen( const char * /* filename */, const char * /* mode */ );
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123
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124 externC FILE *
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125 freopen( const char * /* filename */, const char * /* mode */,
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126 FILE * /* stream */ );
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127
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128 externC void
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129 setbuf( FILE * /* stream */, char * /* buffer */ );
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130
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131 externC int
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132 setvbuf( FILE * /* stream */, char * /* buffer */, int /* mode */,
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133 size_t /* size */ );
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134
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135 //========================================================================
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136
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137 // ISO C 7.9.6 Formatted input/output functions
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138
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139 externC int
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140 fprintf( FILE * /* stream */, const char * /* format */, ... );
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141
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142 externC int
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143 fscanf( FILE * /* stream */, const char * /* format */, ... );
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144
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145 externC int
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146 printf( const char * /* format */, ... );
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147
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148 externC int
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149 scanf( const char * /* format */, ... );
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150
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151 externC int
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152 sprintf( char * /* str */, const char * /* format */, ... );
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153
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154 externC int
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155 sscanf( const char * /* str */, const char * /* format */, ... );
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156
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157 externC int
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158 vfprintf( FILE * /* stream */, const char * /* format */,
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159 va_list /* args */ );
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160
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161 externC int
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162 vprintf( const char * /* format */, va_list /* args */ );
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163
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164 externC int
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165 vsprintf( char * /* str */, const char * /* format */,
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166 va_list /* args */ );
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167
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168 //========================================================================
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169
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170 // ISO C 7.9.7 Character input/output functions
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171
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172 externC int
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173 fgetc( FILE * /* stream */ );
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174
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175 externC char *
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176 fgets( char * /* str */, int /* length */, FILE * /* stream */ );
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177
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178 externC int
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179 fputc( int /* c */, FILE * /* stream */ );
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180
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181 externC int
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182 putc( int /* c */, FILE * /* stream */ );
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183
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184 externC int
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185 putchar( int /* c */ );
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186
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187 externC int
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188 fputs( const char * /* str */, FILE * /* stream */ );
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189
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190 externC char *
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191 gets( char * );
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192
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193 externC int
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194 getc( FILE * /* stream */ );
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195
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196 externC int
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197 getchar( void );
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198
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199 externC int
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200 puts( const char * /* str */ );
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201
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202 externC int
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203 ungetc( int /* c */, FILE * /* stream */ );
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204
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205 // no function equivalent is required for getchar() or putchar(), so we can
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206 // just #define them
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207
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208 #define getchar() fgetc( stdin )
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209
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210 #define putchar(__c) fputc(__c, stdout)
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211
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212 //========================================================================
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213
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214 // ISO C 7.9.8 Direct input/output functions
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215
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216 externC size_t
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217 fread( void * /* ptr */, size_t /* object_size */,
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218 size_t /* num_objects */, FILE * /* stream */ );
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219
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220 externC size_t
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221 fwrite( const void * /* ptr */, size_t /* object_size */,
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222 size_t /* num_objects */, FILE * /* stream */ );
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223
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224 //========================================================================
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225
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226 // ISO C 7.9.9 File positioning functions
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227
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228 externC int
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229 fgetpos( FILE * /* stream */, fpos_t * /* pos */ );
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230
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231 externC int
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232 fseek( FILE * /* stream */, long int /* offset */, int /* whence */ );
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233
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234 externC int
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235 fsetpos( FILE * /* stream */, const fpos_t * /* pos */ );
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236
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237 externC long int
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238 ftell( FILE * /* stream */ );
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239
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240 externC void
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241 rewind( FILE * /* stream */ );
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242
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243 //========================================================================
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244
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245 // ISO C 7.9.10 Error-handling functions
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246
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247 externC void
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248 clearerr( FILE * /* stream */ );
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249
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250 externC int
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251 feof( FILE * /* stream */ );
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252
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253 externC int
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254 ferror( FILE * /* stream */ );
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255
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256 externC void
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257 perror( const char * /* prefix_str */ );
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258
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259 //========================================================================
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260
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261 // Other non-ISO C functions
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262
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263 externC int
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264 fnprintf( FILE * /* stream */, size_t /* length */,
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265 const char * /* format */, ... );
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266
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267 externC int
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268 snprintf( char * /* str */, size_t /* length */, const char * /* format */,
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269 ... );
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270
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271 externC int
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272 vfnprintf( FILE * /* stream */, size_t /* length */,
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273 const char * /* format */, va_list /* args */ );
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274
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275 externC int
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276 vsnprintf( char * /* str */, size_t /* length */,
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277 const char * /* format */, va_list /* args */ );
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278
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279 externC int
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280 vscanf( const char * /* format */, va_list /* args */ );
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281
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282 externC int
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283 vsscanf( const char * /* str */, const char * /* format */,
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284 va_list /* args */ );
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285
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286 externC int
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287 vfscanf( FILE * /* stream */, const char * /* format */,
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288 va_list /* args */ );
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289
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290
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291 // INLINE FUNCTIONS
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292
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293 #ifdef CYGIMP_LIBC_STDIO_INLINES
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294 # include <cyg/libc/stdio/stdio.inl>
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295 #endif
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296
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297 #endif // CYGONCE_LIBC_STDIO_STDIO_H multiple inclusion protection
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298
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299 // EOF stdio.h