11713Smckusick /* Copyright (c) 1979 Regents of the University of California */ 21713Smckusick 3*3869Smckusic static char sccsid[] = "@(#)UNPACK.c 1.3 06/10/81"; 41713Smckusick 51713Smckusick 61713Smckusick /* 71713Smckusick * unpack(z,a,i) 81713Smckusick * 91713Smckusick * with: z and a as in pack 101713Smckusick * 111713Smckusick * semantics: for j := u to v do 121713Smckusick * a[j-u+i] := z[j] 131713Smckusick */ 141713Smckusick 151713Smckusick UNPACK(i, a, z, size_a, lb_a, ub_a, size_z) 161713Smckusick 173038Smckusic long i; /* subscript into a to begin packing */ 181713Smckusick char *a; /* pointer to structure a */ 191713Smckusick char *z; /* pointer to structure z */ 203038Smckusic long size_a; /* sizeof(a_type) */ 213038Smckusic long lb_a; /* lower bound of structure a */ 223038Smckusic long ub_a; /* (upper bound of a) - (lb_a + sizeof(z_type)) */ 233038Smckusic long size_z; /* sizeof(z_type) */ 241713Smckusick { 251713Smckusick int subscr; 261713Smckusick register char *cp; 271713Smckusick register char *zp = z; 281713Smckusick register char *limit; 291713Smckusick 301713Smckusick subscr = i - lb_a; 311713Smckusick if (subscr < 0 || subscr > ub_a) { 32*3869Smckusic ERROR("i = %D: Bad i to unpack(z,a,i)\n", i); 331713Smckusick return; 341713Smckusick } 351713Smckusick cp = &a[subscr * size_a]; 361713Smckusick limit = cp + size_z; 371713Smckusick do { 381713Smckusick *cp++ = *zp++; 391713Smckusick } while (cp < limit); 401713Smckusick } 41