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annotate packages/language/c/libc/string/current/src/bsdstring.cxx @ 210:d2c90368aeef

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Merge from eCos master repository on 2002-05-23-21:39:14-BST
author jlarmour
date Thu, 23 May 2002 22:59:51 +0000
parents e0c0827131d1
children
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1 //===========================================================================
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2 //
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3 // bsdstring.cxx
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4 //
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5 // BSD string routines
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6 //
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7 //===========================================================================
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8 //####ECOSGPLCOPYRIGHTBEGIN####
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9 // -------------------------------------------
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10 // This file is part of eCos, the Embedded Configurable Operating System.
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11 // Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
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12 //
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13 // eCos is free software; you can redistribute it and/or modify it under
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14 // the terms of the GNU General Public License as published by the Free
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15 // Software Foundation; either version 2 or (at your option) any later version.
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16 //
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17 // eCos is distributed in the hope that it will be useful, but WITHOUT ANY
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18 // WARRANTY; without even the implied warranty of MERCHANTABILITY or
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19 // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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20 // for more details.
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21 //
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22 // You should have received a copy of the GNU General Public License along
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23 // with eCos; if not, write to the Free Software Foundation, Inc.,
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24 // 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
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25 //
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26 // As a special exception, if other files instantiate templates or use macros
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27 // or inline functions from this file, or you compile this file and link it
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28 // with other works to produce a work based on this file, this file does not
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29 // by itself cause the resulting work to be covered by the GNU General Public
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30 // License. However the source code for this file must still be made available
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31 // in accordance with section (3) of the GNU General Public License.
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32 //
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33 // This exception does not invalidate any other reasons why a work based on
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34 // this file might be covered by the GNU General Public License.
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35 //
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36 // Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
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37 // at http://sources.redhat.com/ecos/ecos-license/
208
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38 // -------------------------------------------
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39 //####ECOSGPLCOPYRIGHTEND####
197
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40 //===========================================================================
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41 //#####DESCRIPTIONBEGIN####
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42 //
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43 // Author(s): jlarmour
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44 // Contributors:
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45 // Date: 2001-11-27
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46 // Purpose: Provide string functions derived from BSD
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47 // Description:
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48 // Usage: #include <string.h>
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49 //
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50 //####DESCRIPTIONEND####
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51 //
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52 //===========================================================================
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53
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54 // CONFIGURATION
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55
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56 #include <pkgconf/libc_string.h> // Configuration header
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57
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58 // INCLUDES
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59
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60 #include <cyg/infra/cyg_type.h> // Common type definitions
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61 #include <cyg/infra/cyg_trac.h> // Tracing support
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62 #include <cyg/infra/cyg_ass.h> // Assertion support
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63 #include <string.h> // Header for this file
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64 #include <stddef.h> // size_t, NULL etc.
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65 #include <ctype.h> // toupper/tolower
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66
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67 // FUNCTIONS
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68
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69 /*---------------------------------------------------------------------*/
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70 /* strcasecmp */
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71
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72 __externC int
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73 __strcasecmp( const char *s1, const char *s2 )
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74 {
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75 CYG_REPORT_FUNCNAMETYPE( "strcasecmp", "returning %d" );
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76 CYG_REPORT_FUNCARG2( "s1=%08x, s2=%08x", s1, s2 );
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77
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78 CYG_CHECK_DATA_PTR( s1, "s1 is not a valid pointer!" );
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79 CYG_CHECK_DATA_PTR( s2, "s2 is not a valid pointer!" );
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80
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81 while (*s1 != '\0' && tolower(*s1) == tolower(*s2))
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82 {
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83 s1++;
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84 s2++;
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85 }
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86
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87 int ret = tolower(*(unsigned char *) s1) - tolower(*(unsigned char *) s2);
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88 CYG_REPORT_RETVAL( ret );
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89 return ret;
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90 }
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91
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92 __externC int
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93 strcasecmp( const char *s1, const char *s2 ) \
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94 CYGBLD_ATTRIB_WEAK_ALIAS(__strcasecmp);
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95
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96
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97 /*---------------------------------------------------------------------*/
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98 /* strncasecmp */
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99
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100 __externC int
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101 __strncasecmp( const char *s1, const char *s2, size_t n )
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102 {
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103 CYG_REPORT_FUNCNAMETYPE( "strncasecmp", "returning %d" );
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104 CYG_REPORT_FUNCARG3( "s1=%08x, s2=%08x, n=%d", s1, s2, n );
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105
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106 if (n == 0)
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107 {
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108 CYG_REPORT_RETVAL(0);
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109 return 0;
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110 }
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111
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112 CYG_CHECK_DATA_PTR( s1, "s1 is not a valid pointer!" );
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113 CYG_CHECK_DATA_PTR( s2, "s2 is not a valid pointer!" );
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114
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115 while (n-- != 0 && tolower(*s1) == tolower(*s2))
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116 {
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117 if (n == 0 || *s1 == '\0' || *s2 == '\0')
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118 break;
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119 s1++;
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120 s2++;
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121 }
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122
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123 int ret = tolower(*(unsigned char *) s1) - tolower(*(unsigned char *) s2);
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124 CYG_REPORT_RETVAL( ret );
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125 return ret;
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126 }
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127
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128 __externC int
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129 strncasecmp( const char *s1, const char *s2, size_t n ) \
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130 CYGBLD_ATTRIB_WEAK_ALIAS(__strncasecmp);
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131
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132 /*---------------------------------------------------------------------*/
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133 /* bcmp */
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134
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135 __externC int
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136 __bcmp( const void *s1, const void *s2, size_t n )
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137 {
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138 // Don't bother tracing - memcmp can do that
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139 return memcmp (s1, s2, n);
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140 }
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141
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142 __externC int
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143 bcmp( const void *s1, const void *s2, size_t n ) \
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144 CYGBLD_ATTRIB_WEAK_ALIAS(__bcmp);
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145
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146 /*---------------------------------------------------------------------*/
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147 /* bcopy */
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148
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149 __externC void
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150 __bcopy( const void *src, void *dest, size_t n )
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151 {
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152 // Don't bother tracing - memmove can do that
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153 memmove (dest, src, n);
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154 }
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155
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156 __externC void
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157 bcopy( const void *src, void *dest, size_t n ) \
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158 CYGBLD_ATTRIB_WEAK_ALIAS(__bcopy);
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159
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160 /*---------------------------------------------------------------------*/
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161 /* bzero */
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162
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163 __externC void
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164 __bzero( void *s, size_t n )
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165 {
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166 // Don't bother tracing - memset can do that
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167 memset( s, 0, n );
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168 }
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169
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170 __externC void
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171 bzero( void *s, size_t n ) CYGBLD_ATTRIB_WEAK_ALIAS(__bzero);
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172
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173 /*---------------------------------------------------------------------*/
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174 /* index */
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175
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176 __externC char *
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177 __index( const char *s, int c )
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178 {
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179 // Don't bother tracing - strchr can do that
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180 return strchr(s, c);
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181 }
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182
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183 __externC char *
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184 index( const char *s, int c ) CYGBLD_ATTRIB_WEAK_ALIAS(__index);
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185
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186 /*---------------------------------------------------------------------*/
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187 /* rindex */
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188
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189 __externC char *
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190 __rindex( const char *s, int c )
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191 {
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192 // Don't bother tracing - strrchr can do that
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193 return strrchr(s, c);
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194 }
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195
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196 __externC char *
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197 rindex( const char *s, int c ) CYGBLD_ATTRIB_WEAK_ALIAS(__rindex);
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198
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199 /*---------------------------------------------------------------------*/
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200 /* swab */
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201
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202 __externC void
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203 __swab( const void *from, void *to, size_t n )
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204 {
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205 const char *f = (const char *)from;
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206 char *t = (char *)to;
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207 size_t ptr;
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208
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209 CYG_REPORT_FUNCNAME( "swab" );
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210 CYG_REPORT_FUNCARG3( "from=%08x, to=%08x, n=%d", from, to, n );
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211
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212 if (n) {
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213 CYG_CHECK_DATA_PTR( from, "from is not a valid pointer!" );
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214 CYG_CHECK_DATA_PTR( to, "to is not a valid pointer!" );
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215 }
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216
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217 for (ptr = 1; ptr < n; ptr += 2)
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218 {
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219 char p = f[ptr];
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220 char q = f[ptr-1];
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221 t[ptr-1] = p;
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222 t[ptr ] = q;
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223 }
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224 if (ptr == n) /* I.e., if n is odd, */
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225 t[ptr-1] = '\0'; /* then pad with a NUL. */
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226
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227 CYG_REPORT_RETURN();
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228 }
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229
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230 __externC void
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231 swab( const void *from, void *to, size_t n ) \
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232 CYGBLD_ATTRIB_WEAK_ALIAS(__swab);
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233
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234 /*---------------------------------------------------------------------*/
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235 // EOF bsdstring.cxx