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

    Given the sine of an angle, the Arc Sine in Radians routine
    returns that angle (in radians).

    Format

      MTH$ASIN  sine

      MTH$DASIN  sine

      MTH$GASIN  sine

      Each of the above formats accepts one of the floating-point
      types as input.

1 - Corresponding JSB Entry Points

      MTH$ASIN_R4

      MTH$DASIN_R7

      MTH$GASIN_R7

      Each of the above JSB entry points accepts one of the floating-
      point types as input.

2 - Returns

    OpenVMS usage:floating_point
    type:         F_floating, D_floating, G_floating
    access:       write only
    mechanism:    by value

    Angle in radians. MTH$ASIN returns an F-floating number.
    MTH$DASIN returns a D-floating number. MTH$GASIN returns a G-
    floating number.

3 - Argument

 sine

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

    The sine of the angle whose value (in radians) 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$ASIN, sine specifies an F-floating number.
    For MTH$DASIN, sine specifies a D-floating number. For MTH$GASIN,
    sine specifies a G-floating number.