#ifndef OSK/* Set block of memory to constant */memset(blk,val,size)register char *blk;register char val;register unsigned size;{	while(size-- != 0)		*blk++ = val;}/* Copy block of memory */memcpy(dest,src,size)register char *dest,*src;register unsigned size;{	while(size-- != 0)		*dest++ = *src++;}/* Compare two blocks of memory */memcmp(a,b,size)register char *a,*b;register unsigned size;{	while(size-- != 0)		if(*a++ != *b++)			return 1;	return 0;}#endif