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

 h-degrees

    OpenVMS usage:floating_point
    type:         H_floating
    access:       write only
    mechanism:    by reference

    Angle (in degrees) whose cosine is specified by cosine. The h-
    degrees argument is the address of an H-floating number that
    is this angle. MTH$HACOSD writes the address of the angle into
    h-degrees.

 cosine

    OpenVMS usage:floating_point
    type:         H_floating
    access:       read only
    mechanism:    by reference

    Cosine of the angle whose value (in degrees) is to be returned.
    The cosine argument is the address of a floating-point number
    that is this cosine. The absolute value of cosine must be less
    than or equal to 1. For MTH$HACOSD, cosine specifies an H-
    floating number.