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// Scilab ( http://www.scilab.org/ ) - This file is part of Scilab
// Copyright (C) 2002-2004 - INRIA - Vincent COUVERT
//
// 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-en.txt
function [tree]=sci_log2(tree)
// M2SCI function
// Conversion function for Matlab log2()
// Input: tree = Matlab funcall tree
// Ouput: tree = Scilab equivalent for tree
// %c_log2/%c_frexp and %b_log2/%b_frexp are not defined in Scilab
X = getrhs(tree)
X = convert2double(X)
tree.rhs=Rhs_tlist(X)
// Y = log2(X)
if lhs==1 then
tree.lhs(1).infer=X.infer
// [F,E] = log2(X)
else
if is_complex(X) then
X = Funcall("real",1,list(X),list(Variable("",X.infer)))
elseif ~is_real(X) then
newX = Funcall("real",1,list(X),list(Variable("",X.infer)))
repl_poss(newX,X,X,gettext("is Real."));
X=newX
end
tree.rhs=Rhs_tlist(X)
tree.name="frexp"
tree.lhs(1).dims=X.dims
tree.lhs(1).type=Type(Double,Real)
end
endfunction
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