msu              2317 src/decNumber/decNumber.c         Unit *msu=res->lsu+D2U(res->digits)-1;    // current msu
msu              2319 src/decNumber/decNumber.c         for (msu++; msu<=msumax; msu++) *msu=0;   // ensure high units=0
msu              7312 src/decNumber/decNumber.c   Unit *msu;                            // -> target cut point
msu              7319 src/decNumber/decNumber.c   msu=dn->lsu+D2U(dn->digits-drop)-1;   // -> likely msu
msu              7321 src/decNumber/decNumber.c   if (cut!=DECDPUN) *msu%=powers[cut];  // clear left digits
msu              7323 src/decNumber/decNumber.c   dn->digits=decGetDigits(dn->lsu, msu-dn->lsu+1);