VMS Help  —  CPML  hypot()  Description
    hypot() computes the length of the hypotenuse of a right
    triangle, where x and y represent the perpendicular sides of
    the triangle.

    hypot(x,y) is defined as the square root of (x**2 + y**2) and
    returns the same value as cabs(x,y).

                           Entry-Point Names

    Generic
    Function   Data Type   OpenVMS        Tru64 UNIX
    Name       Required

    hypot      S_FLOAT     math$hypot_s   hypotf
               T_FLOAT     math$hypot_t   hypot
               X_FLOAT     math$hypot_x   hypotl
               F_FLOAT     math$hypot_f
               G_FLOAT     math$hypot_g
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