/sys$common/syshlp/helplib.hlb RTL Routines, MTH$, MTH$HASIND, 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 sine is specified by sine. The h-degrees
    argument is the address of an H-floating number that is this
    angle. MTH$HASIND writes the address of the angle into h-degrees.

 sine

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

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