D-floating-point-base OpenVMS usage:floating_point type: D_floating access: read only mechanism: by value Base. The D-floating-point-base argument is a D-floating number containing the base. longword-integer-exponent OpenVMS usage:longword_signed type: longword (signed) access: read only mechanism: by value Exponent. The longword-integer-exponent argument is a signed longword that contains the signed longword integer exponent.