80 		struct blk *q;  in alloc()  local
85 				while (!busy(q = p->word))  in alloc()
86 					p->word = q->word;  in alloc()
87 				if ((char *)q - (char *)p >= rbytes) {  in alloc()
90 					if (q > blokp)  in alloc()
100 			q = p;  in alloc()
102 		} while (p > q || (c++) == 0);  in alloc()
213 	struct blk *q;  in chkbptr()  local
217 		q = (struct blk *)(Rcheat(p->word) & ~BUSY);  in chkbptr()
222 		if (q < (struct blk *)brkbegin || q > bloktop)  in chkbptr()
229 			us += q - p;  in chkbptr()
231 			un += q - p;  in chkbptr()
233 		if (p >= q)  in chkbptr()
236 		p = q;  in chkbptr()
246 	struct blk *q;  in chkmem()  local
250 		q = (struct blk *)(Rcheat(p->word) & ~BUSY);  in chkmem()
252 		if (q < (struct blk *)brkbegin || q > bloktop)  in chkmem()
259 			us += q - p;  in chkmem()
261 			un += q - p;  in chkmem()
263 		if (p >= q)  in chkmem()
266 		p = q;  in chkmem()
282 blklen(q)  in blklen()  argument
283 char *q;  in blklen()
285 	struct blk *pp = (struct blk *)q;
291 	return ((size_t)((long)p - (long)q));
323 	char *q;  local
334 		q = alloc(nbytes);
335 		memcpy(q, pp, blen);
337 		return ((char *)q);
341 		q = alloc(nbytes);
342 		memcpy(q, pp, nbytes);
344 		return ((char *)q);
358 		q = alloc(nbytes);
359 		memcpy(q, pp, sizeof (p));
361 		return ((char *)q);
365 		q = alloc(nbytes);
366 		memcpy(q, pp, nbytes);
368 		return ((char *)q);