bary_addc        1424 bignum.c           return bary_addc(zds, zn, xds, xn, yds, yn, 0);
bary_addc        1787 bignum.c           carry1 = bary_addc(zds2, n, zds2, n, zds1, n, carry1);
bary_addc        1807 bignum.c           carry3 = bary_addc(zds2, n, zds2, n, zds3, (4*n < zn ? n : zn-3*n), carry3);