5 integer f_rew(a) alist *a;
7 integer f_rew(alist *a)
12 f__fatal (131, "I/O recursion");
13 if(a->aunit>=MXUNIT || a->aunit<0)
14 err(a->aerr,101,"rewind");
15 b = &f__units[a->aunit];
16 if(b->ufd == NULL || b->uwrt == 3)
19 err(a->aerr,106,"rewind");
24 FSEEK(b->ufd, 0, SEEK_SET);