VMS Help RTL Routines, MTH$, MTH$xCOSH, Argument  *Conan The Librarian (sorry for the slow response - running on an old VAX)

 floating-point-input-value

    OpenVMS usage:floating_point
    type:         F_floating, D_floating, G_floating
    access:       read only
    mechanism:    by reference

    The input value. The floating-point-input-value argument is the
    address of this input value. For MTH$COSH, floating-point-input-
    value specifies an F-floating number. For MTH$DCOSH, floating-
    point-input-value specifies a D-floating number. For MTH$GCOSH,
    floating-point-input-value specifies a G-floating number.