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

 complex-sine

    OpenVMS usage:complex_number
    type:         D_floating complex, G_floating complex
    access:       write only
    mechanism:    by reference

    Complex sine of the complex number. The complex sine routines
    with D-floating complex and G-floating complex input values
    write the complex sine into this complex-sine argument. For
    MTH$CDSIN, complex-sine specifies a D-floating complex number.
    For MTH$CGSIN, complex-sine specifies a G-floating complex
    number.

 complex-number

    OpenVMS usage:complex_number
    type:         D_floating complex, G_floating complex
    access:       read only
    mechanism:    by reference

    A complex number (r,i), where r and i are floating-point numbers.
    The complex-number argument is the address of this complex
    number. For MTH$CDSIN, complex-number specifies a D-floating
    complex number. For MTH$CGSIN, complex-number specifies a G-
    floating complex number.