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/* memchr( const void *, int, size_t )

   This file is part of the Public Domain C Library (PDCLib).

   Permission is granted to use, modify, and / or redistribute at will.

*/

#include 

void * memchr( const void * s, int c, size_t n )

{

    const unsigned char * p = ( const unsigned char * ) s;

    while ( n-- )

    {

        if ( *p == ( unsigned char ) c )

        {

            return ( void * ) p;

        }

        ++p;

    }

    return NULL;

}