#include <u.h>#include <libc.h>#include <draw.h>#include <memdraw.h> /* * Wordaddr is deprecated. */ulong*wordaddr(Memimage *i, Point p){	return (ulong*) ((uintptr)byteaddr(i, p) & ~(sizeof(ulong)-1));} uchar*byteaddr(Memimage *i, Point p){	uchar *a; 	/* careful to sign-extend negative p.y for 64-bits */	a = i->data->bdata+i->zero+(int)(sizeof(ulong)*p.y*i->width); 	if(i->depth < 8){		/*		 * We need to always round down,		 * but C rounds toward zero.		 */		int np;		np = 8/i->depth;		if(p.x < 0)			return a+(p.x-np+1)/np;		else			return a+p.x/np;	}	else		return a+p.x*(i->depth/8);}