La funció DISC retorna la taxa de descompte per a una fiança. Basat en el tipus de comptador de dies: 0 US 30/ 360 (per defecte), 1: dies reals, 2: dies reals/ 360, 3 dies reals/ 365 o 4: europeu 30/ 365.
The DISC function returns the discount rate for a security. Basis is the type of day counting you want to use: 0: US 30/ 360 (default), 1: real days, 2: real days/ 360, 3: real days/ 365 or 4: European 30/ 365.