ZealOS/zealbooter/lib/memcmp.c

/* memcmp( const void *, const void *, 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 <stddef.h>

int memcmp(const void *s1, const void *s2, size_t n)
{
    const unsigned char *p1 = (const unsigned char *)s1;
    const unsigned char *p2 = (const unsigned char *)s2;

    while (n--)
    {
        if (*p1 != *p2)
        {
            return *p1 - *p2;
        }

        ++p1;
        ++p2;
    }

    return 0;
}