FP_CLASS (real-number) Class: Elemental function - Generic Returns the class of an IEEE real (S_floating, T_floating, or X_floating) argument. The result is of type default integer. The return values are defined in module "FORSYSDEF". For information on the location of this file, see the HP Fortran for OpenVMS User Manual. Example: FP_CLASS (4.0_8) has the value 4 (FOR_K_FP_POS_NORM, a normal positive number).