function value = r8_relu ( x )

%*****************************************************************************80
%
%% R8_RELU evaluates the ReLU function of an R8.
%
%  Discussion:
%
%    An R8 is a double precision real value.
%
%    The ReLU function is max(x,0.0).
%
%  Licensing:
%
%    This code is distributed under the GNU LGPL license.
%
%  Modified:
%
%    10 January 2019
%
%  Author:
%
%    John Burkardt
%
%  Parameters:
%
%    Input, real X, the argument.
%
%    Output, real VALUE, the function value.
%
  value = max ( x, 0.0 );

  return
end
