tanh(3F)                                                 tanh(3F)



     NAME
          tanh, dtanh - Fortran hyperbolic tangent intrinsic function

     SYNOPSIS
          real r1, r2
          double precision dp1, dp2

          r2=tanh(r1)

          dp2=dtanh(dp1)
          dp2=tanh(dp1)

     DESCRIPTION
          tanh returns the real hyperbolic tangent of its real argu-
          ment.  dtanh returns the double-precision hyperbolic tangent
          of its double precision argument.  The generic form tanh may
          be used to return a double-precision value given a double-
          precision argument.

     SEE ALSO
          sinh(3M).


































     April, 1990                                                     1