SMAT_matlabcall_demo_function( x , y )

% /*M-FILE FUNCTION SMAT_MATLABCALL_DEMO_FUNCTION MMM SMATLINK */ %
% /*==================================================================================================
%  Simple MATlab and MAThematica LINK laboratory Toolbox for Matlab 7.x
%
%  Copyright 2009 The SxLAB Family - Yi Chen - [e-mail]
% ====================================================================================================
% File description:
%
%          An example for Calling Mathematica Kernel by Matlab Function m-file
%        
%          z = sqrt( x^2 + y^2 )
%Exampe:
% 1) 
% z = SMAT_matlabcall_demo_function( 3.1 , 4.1 )
% 
% z =
% 
%           5.14003891035856
%2) 
%  z  = SMAT_matlabcall_demo_function( 3 , 4 )
% 
% z =
% 
%      5
%===================================================================================================
%  See Also:        
%                    
%                    SMAT_matlabcall_casetest.m  
%                    SMAT_matlabcall_demo_script.m
%===================================================================================================
% 
% 
%===================================================================================================
%Revision -
% Date         Name                    Description of Change
% 29-Jun-2008  Yi Chen                 Initial
%HISTORY$
%==================================================================================================*/

% SMAT_MATLABCALL_DEMO_FUNCTION Begin

function [ z ] = SMAT_matlabcall_demo_function( x , y )

% Step 1 : Pro process - convert number to string by num2str()
  aa  = SMAT_matlabcall_pre_process( x^2 );
  bb  = SMAT_matlabcall_pre_process( y^2 );

% Step 2 : build a input string
  input  = [ aa, '+', bb ];

% Step 3 : define a function in mathematica
  output = SMAT_matlabcall(input);

% Step 4 : Post process - convert string output to number output by str2num()
%          str2double()
  z = sqrt(SMAT_matlabcall_post_process( output ));
  
% Step 5 : Optional
  SMAT_matlabcall('Close')

% SMAT_MATLABCALL_DEMO_FUNCTION End