#include <stddef.h>

void * memcpy( void * destination, const void * source, size_t count )
{
    unsigned char * out = ( unsigned char * ) destination;
    const unsigned char * in = ( const unsigned char * ) source;

    for( size_t index = 0; index < count; ++index )
    {
        out[ index ] = in[ index ];
    }
    return destination;
}
void * memset( void * destination, int value, size_t count )
{
    unsigned char * out = ( unsigned char * ) destination;

    for( size_t index = 0; index < count; ++index )
    {
        out[ index ] = ( unsigned char ) value;
    }
    return destination;
}

size_t strlen( const char * text )
{
    size_t length = 0;

    while( text[ length ] != '\0' )
    {
        ++length;
    }
    return length;
}