source: buchla-68k/libsm/memccpy.c@ c3aee8a

/*
   =============================================================================
        memccpy.c -- copy bytes until character seen
        Version 1 -- 1987-06-12

        Copy vp2 to vp1, stopping if character c is copied.
        Copy no more than n bytes.
        Return a pointer to the byte after character c in the copy,
        or NULL if c is not found in the first n bytes.
   =============================================================================
*/

void *memccpy(void *vp1, void *vp2, int8_t c, int16_t n)
{
        int8_t *cp1 = vp1;
        int8_t *cp2 = vp2;

        while (--n >= 0)
                if ((*cp1++ = *cp2++) == c)
                        return(cp1);

        return((void *)0);
}