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Reactos
1/***
2*strlen.c - contains strlen() routine
3*
4* Copyright (c) Microsoft Corporation. All rights reserved.
5*
6*Purpose:
7* strlen returns the length of a null-terminated string,
8* not including the null byte itself.
9*
10*******************************************************************************/
11
12#include <string.h>
13
14#pragma function(strlen)
15
16/***
17*strlen - return the length of a null-terminated string
18*
19*Purpose:
20* Finds the length in bytes of the given string, not including
21* the final null character.
22*
23*Entry:
24* const char * str - string whose length is to be computed
25*
26*Exit:
27* length of the string "str", exclusive of the final null byte
28*
29*Exceptions:
30*
31*******************************************************************************/
32
33size_t __cdecl strlen (
34 const char * str
35 )
36{
37 const char *eos = str;
38
39 while( *eos++ ) ;
40
41 return( eos - str - 1 );
42}