692 	Bigint *b1;  local
716 			b1 = Balloc(b->k+1);
717 			if (b1 == BIGINT_INVALID) {
719 				return b1;
721 			Bcopy_valid(b1, b);
723 			b = b1;
735 	Bigint *b1;  in increment()  local
762 			b1 = Balloc(b->k+1);  in increment()
763 			Bcopy(b1,b);  in increment()
765 			b = b1;  in increment()
1020 	Bigint *b1, *p5, *p51;  local
1046 			b1 = mult(b, p5);
1048 			b = b1;
1077 	Bigint *b1;  local
1092 	b1 = Balloc(k1);
1093 	if (b1 == BIGINT_INVALID) {
1095 		return b1;
1097 	x1 = b1->x;
1130 	b1->wds = n1 - 1;
1132 	return b1;
2407 	Bigint *b, *b1, *delta, *mhi, *S;  local
2789 				b1 = mult(mhi, b);
2791 				b = b1;