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// Scilab ( http://www.scilab.org/ ) - This file is part of Scilab
// Copyright (C) INRIA
// This file must be used under the terms of the CeCILL.
// This source file is licensed as described in the file COPYING, which
// you should have received as part of this distribution. The terms
// are also available at
// http://www.cecill.info/licences/Licence_CeCILL_V2.1-en.txt
function [z]=eval3d(fun,x,y)
//Etant donnee une discretisation des abscisses (x) et des ordonnees (y)
// eval3d(fun,x [,y]) retourne la matrice [fun(x(i),y(j))] des valeurs de la
// fonction decrite par la macro fun aux points (x(i),y(j)).
//Attention fun doit savoir gerer des arguments x et y vectoriels.
// Si fun ne sait pas gerer des arguments vectoriels, utiliser
// feval(x,y,fun)
//Si y n'est pas fourni il est suppose identique a x
//!
[lhs,rhs]=argn(0)
if rhs==3 then
nx=prod(size(x));ny=prod(size(y))
z=matrix(fun(ones(1,ny).*.matrix(x,1,nx),matrix(y,1,ny).*.ones(1,nx)),nx,ny)
elseif rhs==2 then
nx=prod(size(x))
z=matrix(fun(ones(1,nx).*.matrix(x,1,nx),matrix(x,1,nx).*.ones(1,nx)),nx,nx)
else
error(msprintf(gettext("%s: Wrong number of input arguments: %d or %d expected.\n"), "eval3d", 2, 3));
end
endfunction
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