BDIGIT_DBL_SIGNED 1388 bignum.c           BDIGIT_DBL_SIGNED num;
BDIGIT_DBL_SIGNED 1412 bignum.c       	num += (BDIGIT_DBL_SIGNED)BDIGITS(x)[i] - BDIGITS(y)[i];
BDIGIT_DBL_SIGNED 1627 bignum.c           BDIGIT_DBL_SIGNED num;