ATAN(3F)                COMMAND REFERENCE                ATAN(3F)



NAME
     atan, datan - FORTRAN arctangent intrinsic function

SYNOPSIS
     real r1, r2
     double precision dp1, dp2

     r2 = atan(r1)

     dp2 = datan(dp1)
     dp2 = atan(dp1)

DESCRIPTION
     Atan returns the real arctangent of its real argument.
     Datan returns the double-precision arctangent of its
     double-precision argument.  The generic form atan may be
     used with a double-precision argument returning a double-
     precision value.

SEE ALSO
     sin(3m).


































Printed 5/12/88                                                 1

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