bary_mul_karatsuba_branch 2459 bignum.c           bary_mul_karatsuba_branch(zds, zn, xds, xn, yds, yn, wds, wn);
bary_mul_karatsuba_branch 2466 bignum.c               bary_mul_karatsuba_branch(zds, zn, xds, xn, yds, yn, wds, wn);