ATAN, ATAN2 (III) 1/15/73 ATAN, ATAN2 (III)





ATAN, ATAN2 (III)            1/15/73            ATAN, ATAN2 (III)





NAME            atan -- arc tangent function



SYNOPSIS        jsr     r5,atan[2]



DESCRIPTION     The atan entry returns the arc tangent of fr0 in

                fr0.  The range is -π/2 to π/2.



                The atan2 entry returns the arc tangent of

                fr0/fr1 in fr0.  The range is -π to π.



FILES           kept in /lib/liba.a



SEE ALSO        --



DIAGNOSTICS     there is no error return



BUGS            --
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