mirror of https://github.com/lianthony/NT4.0
54 lines
1.3 KiB
54 lines
1.3 KiB
/***
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*strlen.c - contains strlen() routine
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*
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* Copyright (c) 1985-1991, Microsoft Corporation. All rights reserved.
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*
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*Purpose:
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* strlen returns the length of a null-terminated string,
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* not including the null byte itself.
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*
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*Revision History:
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* 05-31-89 JCR C version created.
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* 02-27-90 GJF Fixed calling type, #include <cruntime.h>, fixed
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* copyright.
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* 10-02-90 GJF New-style function declarator.
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* 04-01-91 SRW Add #pragma function for i386 _WIN32_ and _CRUISER_
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* builds
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* 04-05-91 GJF Speed up just a little bit.
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*
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*******************************************************************************/
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#include <cruntime.h>
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#include <string.h>
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#if defined(_CRUISER_) || defined(i386)
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#pragma function(strlen)
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#endif /* ndef _CRUISER_ */
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/***
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*strlen - return the length of a null-terminated string
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*
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*Purpose:
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* Finds the length in bytes of the given string, not including
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* the final null character.
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*
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*Entry:
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* const char * str - string whose length is to be computed
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*
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*Exit:
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* length of the string "str", exclusive of the final null byte
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*
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*Exceptions:
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*
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*******************************************************************************/
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size_t _CALLTYPE1 strlen (
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const char * str
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)
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{
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const char *eos = str;
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while( *eos++ ) ;
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return( (int)(eos - str - 1) );
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}
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