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                                 L_ATAN()


Syntax:        L_ATAN(<expN>)


Purpose:       Calculate the Arctangent of <expN>


Arguments:     <expN> the ratio to be calculated


Returns:       The radian of <expN> between -(pi/2) and pi/2


Examples:      L_ATAN(1)             && Result 0.785398


Language:      C

See Also: L_ASIN() L_ATAN() L_DEGREE() L_RADIAN()

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