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annotate packages/language/c/libc/current/include/stdio.h @ 64:c38311975d4f ecos-sw-2000-01-28

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Merge from eCos master repository on 2000-01-28-04:28:11-GMT
author jlarmour
date Fri, 28 Jan 2000 04:59:39 +0000
parents 4741a3c3496a
children bf00f99aec69
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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####
64
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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 1.0 (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
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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
2
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37 // Contributors: jlarmour
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38 // Date: 1999-01-19
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39 // Purpose: ISO C standard I/O routines
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40 // Description:
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41 // Usage: #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.h> // Configuration header
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50
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51 // Include the C library?
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52 #ifdef CYGPKG_LIBC
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53
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54 // INCLUDES
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55
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56 #include <cyg/infra/cyg_type.h> // common type definitions and support
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57 #include <stddef.h> // NULL and size_t from compiler
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58 #include <stdarg.h> // va_list from compiler
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59
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60 // CONSTANTS
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61
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62 // Some of these values are odd to ensure that asserts have better effect
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63 // should spurious values be passed to functions expecting these constants.
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64
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65 // _IOFBF, _IOLBF, and _IONBF specify full, line or no buffering when used
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66 // with setvbuf() - ISO C standard chap 7.9.1
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67
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68 #define _IOFBF (-2)
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69 #define _IOLBF (-4)
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70 #define _IONBF (-8)
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71
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72 // EOF is a macro defined to any negative integer constant - ISO C standard
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73 // chap. 7.9.1
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74 #define EOF (-1)
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75
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76 // SEEK_CUR, SEEK_END and SEEK_SET are used with fseek() as position
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77 // anchors - ISO C standard chap. 7.9.1
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78 #define SEEK_SET 0
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79 #define SEEK_CUR 1
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80 #define SEEK_END 2
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81
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82
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83 // TYPE DEFINITIONS
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84
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85 // A type capable of specifying uniquely every file position - ISO C
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86 // standard chap 7.9.1
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87 typedef cyg_ucount32 fpos_t;
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88
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89
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90 // FILE is just cast to an address here. It is uncast internally to the
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91 // C library in stream.hxx as the C++ Cyg_StdioStream class.
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92 // Optional run-time checking can be enabled to ensure that the cast is
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93 // valid, using the standard assertion functionality.
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94 //
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95 // The array size is irrelevant other than being more than 8, and is present
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96 // to stop references to FILEs being marked as able to be put in the small
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97 // data section. We can't just mark it as in the ".data" section as on some
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98 // targets it may actually be ".common". Maybe this doesn't matter?
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99 // FIXME: This doesn't work if things are larger than 16 are put in sdata,
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100 // e.g. on mips by specifying -G 32
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101 typedef CYG_ADDRESS FILE[16];
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102
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103 // EXTERNAL VARIABLES
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104
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105 // Default file streams for input/output. These only need to be
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106 // expressions, not l-values - ISO C standard chap. 7.9.1
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107 //
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108 // cyg_libc_stdio_stdin/out/err aren't really files of course,
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109 // but they are only named here so that we can take the address of
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110 // them, in which case it doesn't matter what type they point to really
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111 //
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112 // CYGPRI_LIBC_STDIO_NO_DEFAULT_STREAMS is used when initializing
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113 // cyg_libc_stdio_stdin/out/err privately inside the C library
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114
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115 #ifndef CYGPRI_LIBC_STDIO_NO_DEFAULT_STREAMS
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116 extern FILE cyg_libc_stdio_stdin, cyg_libc_stdio_stdout,
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117 cyg_libc_stdio_stderr;
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118
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119 #define stdin (&cyg_libc_stdio_stdin)
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120 #define stdout (&cyg_libc_stdio_stdout)
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121 #define stderr (&cyg_libc_stdio_stderr)
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122 #endif
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123
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124 // FUNCTION PROTOTYPES
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125
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126 //========================================================================
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127
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128 // ISO C 7.9.5 File access functions
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129
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130 externC int
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131 fclose( FILE * /* stream */ );
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132
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133 externC int
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134 fflush( FILE * /* stream */ );
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135
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136 externC FILE *
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137 fopen( const char * /* filename */, const char * /* mode */ );
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138
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139 externC FILE *
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140 freopen( const char * /* filename */, const char * /* mode */,
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141 FILE * /* stream */ );
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142
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143 externC void
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144 setbuf( FILE * /* stream */, char * /* buffer */ );
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145
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146 externC int
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147 setvbuf( FILE * /* stream */, char * /* buffer */, int /* mode */,
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148 size_t /* size */ );
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149
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150 //========================================================================
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151
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152 // ISO C 7.9.6 Formatted input/output functions
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153
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154 externC int
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155 fprintf( FILE * /* stream */, const char * /* format */, ... );
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156
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157 externC int
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158 fscanf( FILE * /* stream */, const char * /* format */, ... );
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159
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160 externC int
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161 printf( const char * /* format */, ... );
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162
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163 externC int
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164 scanf( const char * /* format */, ... );
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165
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166 externC int
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167 sprintf( char * /* str */, const char * /* format */, ... );
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168
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169 externC int
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170 sscanf( const char * /* str */, const char * /* format */, ... );
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171
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172 externC int
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173 vfprintf( FILE * /* stream */, const char * /* format */,
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174 va_list /* args */ );
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175
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176 externC int
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177 vprintf( const char * /* format */, va_list /* args */ );
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178
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179 externC int
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180 vsprintf( char * /* str */, const char * /* format */,
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181 va_list /* args */ );
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182
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183 //========================================================================
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184
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185 // ISO C 7.9.7 Character input/output functions
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186
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187 externC int
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188 fgetc( FILE * /* stream */ );
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189
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190 externC char *
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191 fgets( char * /* str */, int /* length */, FILE * /* stream */ );
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192
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193 externC int
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194 fputc( int /* c */, FILE * /* stream */ );
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195
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196 externC int
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197 putc( int /* c */, FILE * /* stream */ );
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198
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199 externC int
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200 putchar( int /* c */ );
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201
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202 externC int
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203 fputs( const char * /* str */, FILE * /* stream */ );
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204
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205 externC char *
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206 gets( char * );
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207
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208 externC int
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209 getc( FILE * /* stream */ );
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210
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211 externC int
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212 getchar( void );
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213
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214 externC int
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215 puts( const char * /* str */ );
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216
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217 externC int
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218 ungetc( int /* c */, FILE * /* stream */ );
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219
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220 // no function equivalent is required for getchar() or putchar(), so we can
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221 // just #define them
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222
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223 #define getchar() fgetc( stdin )
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224
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225 #define putchar(__c) fputc(__c, stdout)
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226
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227 //========================================================================
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228
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229 // ISO C 7.9.8 Direct input/output functions
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230
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231 externC size_t
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232 fread( void * /* ptr */, size_t /* object_size */,
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233 size_t /* num_objects */, FILE * /* stream */ );
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234
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235 externC size_t
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236 fwrite( const void * /* ptr */, size_t /* object_size */,
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237 size_t /* num_objects */, FILE * /* stream */ );
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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 // ISO C 7.9.10 Error-handling functions
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243
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244 externC void
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245 clearerr( FILE * /* stream */ );
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246
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247 externC int
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248 feof( FILE * /* stream */ );
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249
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250 externC int
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251 ferror( FILE * /* stream */ );
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252
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253 externC void
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254 perror( const char * /* prefix_str */ );
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255
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256 //========================================================================
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257
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258 // Other non-ISO C functions
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259
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260 externC int
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261 fnprintf( FILE * /* stream */, size_t /* length */,
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262 const char * /* format */, ... );
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263
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264 externC int
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265 snprintf( char * /* str */, size_t /* length */, const char * /* format */,
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266 ... );
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267
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268 externC int
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269 vfnprintf( FILE * /* stream */, size_t /* length */,
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270 const char * /* format */, va_list /* args */ );
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271
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272 externC int
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273 vsnprintf( char * /* str */, size_t /* length */,
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274 const char * /* format */, va_list /* args */ );
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275
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276 externC int
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277 vscanf( const char * /* format */, va_list /* args */ );
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278
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279 externC int
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280 vsscanf( const char * /* str */, const char * /* format */,
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281 va_list /* args */ );
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282
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283 externC int
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284 vfscanf( FILE * /* stream */, const char * /* format */,
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285 va_list /* args */ );
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286
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287
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288 // INLINE FUNCTIONS
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289
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290 #ifdef CYGIMP_LIBC_STDIO_INLINES
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291 #include <stdio.inl>
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292 #endif
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293
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294 #endif // ifdef CYGPKG_LIBC
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295
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296 #endif // CYGONCE_LIBC_STDIO_H multiple inclusion protection
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297
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298 // EOF stdio.h