


      COS(3F)                     (UNIX 5.0)                    COS(3F)



      NAME
           cos, dcos, ccos - Fortran cosine intrinsic function

      SYNTAX
           real r1, r2
           double precision dp1, dp2
           complex cx1, cx2

           r2 = cos(r1)

           dp2 = dcos(dp1)
           dp2 = cos(dp1)

           cx2 = ccos(cx1)
           cx2 = cos(cx1)

      DESCRIPTION
           Cos returns the cosine of its argument, in the real,
           complex, or double-precision type of its argument.

           Dcos returns the double-precision cosine of its double-
           precision argument.

           Ccos returns the complex cosine of its complex argument.

           Although Cos works with any type, the other forms are used
           for clarity in programming.

      SEE ALSO
           trig(3M).

























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