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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_V2.1-en.txt
function r=mtlb_ifft(x,n,job)
// Translation function for ifft() Matlab function
// Number of RHS arguments: 1 <= rhs <= 3
// Number of LHS arguments: lhs = 1
[lhs,rhs]=argn(0)
if size(x,"*")==0 then
r=[]
return
end
if rhs<2 then n=[],end
if rhs==3 then //row or column-wise fft
select job
case 1 then //row-wise
if n<>[] then //pad or truncate
s=size(x,1)
if s>n then //truncated fft
x=x(1:n,:)
elseif s<n then //padd with zeros
x(n,:)=0
end
end
r=[]
for xk=x
r=[r fft(xk,1)]
end
case 2 then //column-wise
if n<>[] then //pad or truncate
s=size(x,2)
if s>n then //truncated fft
x=x(:,1:n)
elseif s<n then //padd with zeros
x(:,n)=0
end
end
r=[]
for k=1:size(x,1)
r=[r;fft(x(k,:),1)]
end
end
else
if min(size(x))==1 then //fft of a vector
if n<>[] then //pad or truncate
s=size(x,"*")
if s>n then //truncated fft
x=x(1:n)
elseif s<n then //padd with zeros
x(n)=0
end
r=fft(x,1)
if s==1 then
r=r.'
end
else
r=fft(x,1)
end
else //row-wise fft
if n<>[] then //pad or truncate
s=size(x,1)
if s>n then //truncated fft
x=x(1:n,:)
elseif s<n then //padd with zeros
x(n,:)=0
end
end
r=[]
for xk=x
r=[r fft(xk,1)]
end
end
end
endfunction
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