VMS Help RTL Routines, MTH$, MTH$xATAN2  *Conan The Librarian (sorry for the slow response - running on an old VAX)

    Given sine and cosine, the Arc Tangent in Radians with Two
    Arguments routine returns the angle (in radians) whose tangent
    is given by the quotient of  sine and cosine (sine/cosine).

    Format

      MTH$ATAN2  sine ,cosine

      MTH$DATAN2  sine ,cosine

      MTH$GATAN2  sine ,cosine

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

  Additional Information (explode) :

• Returns
• Arguments