


      COSH(3F)                    (UNIX 5.0)                   COSH(3F)



      NAME
           cosh, dcosh - Fortran hyperbolic cosine intrinsic function

      SYNTAX
           real r1, r2
           double precision dp1, dp2

           r2 = cosh(r1)

           dp2 = dcosh(dp1)
           dp2 = cosh(dp1)

      DESCRIPTION
           Cosh returns the hyperbolic cosine of its argument, in the
           real or double-precsion type of its argument.

           Dcosh returns the double-precision hyperbolic cosine of its
           double-precision argument.

           Although Cosh works for either data type, Dcosh is for
           clarity in programming.

      SEE ALSO
           sinh(3M).































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