bignum_mul_word   852 src/bignum.c           bignum_mul_word(br, bx, by->values[i], i);
bignum_mul_word   879 src/bignum.c       bignum_mul_word(br, bx, yabs, 0);
bignum_mul_word  1314 src/bignum.c       bignum_mul_word(r, acc, coef, 0);