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. D-floating-point-exponent OpenVMS usage:floating_point type: D_floating access: read only mechanism: by value Exponent. The D-floating-point-exponent argument is a D-floating number that contains the exponent.