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annotate packages/language/c/libc/string/current/src/strspn.cxx @ 115:6ed91473a1cd ecos-sw-2000-08-21

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Merge from eCos master repository on 2000-08-21-22:40:54-BST
author jlarmour
date Fri, 25 Aug 2000 17:32:38 +0000
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children e0c0827131d1
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1 //===========================================================================
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2 //
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3 // strspn.cxx
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4 //
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5 // ANSI standard strspn() routine
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6 //
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7 //===========================================================================
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8 //####COPYRIGHTBEGIN####
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9 //
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10 // -------------------------------------------
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11 // The contents of this file are subject to the Red Hat eCos Public License
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12 // Version 1.1 (the "License"); you may not use this file except in
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13 // compliance with the License. You may obtain a copy of the License at
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14 // http://www.redhat.com/
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15 //
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16 // Software distributed under the License is distributed on an "AS IS"
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17 // basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
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18 // License for the specific language governing rights and limitations under
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19 // the License.
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20 //
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21 // The Original Code is eCos - Embedded Configurable Operating System,
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22 // released September 30, 1998.
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23 //
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24 // The Initial Developer of the Original Code is Red Hat.
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25 // Portions created by Red Hat are
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26 // Copyright (C) 1998, 1999, 2000 Red Hat, Inc.
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27 // All Rights Reserved.
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28 // -------------------------------------------
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29 //
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30 //####COPYRIGHTEND####
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31 //===========================================================================
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32 //#####DESCRIPTIONBEGIN####
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33 //
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34 // Author(s): jlarmour
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35 // Contributors:
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36 // Date: 2000-04-14
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37 // Purpose:
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38 // Description:
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39 // Usage:
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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_string.h> // Configuration header
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48
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49 // INCLUDES
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50
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51 #include <cyg/infra/cyg_type.h> // Common type definitions
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52 #include <cyg/infra/cyg_trac.h> // Tracing support
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53 #include <cyg/infra/cyg_ass.h> // Assertion support
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54 #include <string.h> // Header for this file
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55 #include <stddef.h> // Compiler definitions such as size_t, NULL etc.
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56 #include <cyg/libc/string/stringsupp.hxx> // Useful string function support and
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57 // prototypes
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58
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59 // EXPORTED SYMBOLS
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60
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61 externC size_t
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62 strspn( const char *s1, const char *s2 ) CYGBLD_ATTRIB_WEAK_ALIAS(__strspn);
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63
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64 // FUNCTIONS
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65
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66 size_t
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67 __strspn( const char *s1, const char *s2 )
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68 {
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69 const char *s = s1;
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70 const char *c;
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71 size_t retval;
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72
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73 CYG_REPORT_FUNCNAMETYPE( "__strspn", "returning size %d" );
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74 CYG_REPORT_FUNCARG2( "s1=%08x, s2=%08x", s1, s2 );
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75
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76 CYG_CHECK_DATA_PTR( s1, "s1 is not a valid pointer!" );
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77 CYG_CHECK_DATA_PTR( s2, "s2 is not a valid pointer!" );
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78
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79 while (*s1)
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80 {
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81 for (c = s2; *c; c++)
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82 {
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83 if (*s1 == *c)
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84 break;
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85 }
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86 if (*c == '\0')
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87 break;
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88 s1++;
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89 }
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90
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91 retval = s1 - s;
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92
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93 CYG_REPORT_RETVAL( retval );
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94
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95 return retval;
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96 } // __strspn()
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97
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98 // EOF strspn.cxx