1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
|
// 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_fft(tree)
// M2SCI function
// Conversion function for Matlab fft()
// Input: tree = Matlab funcall tree
// Ouput: tree = Scilab equivalent for tree
// Emulation function: mtlb_fft()
// Y = fft(X)
if rhs==1 then
X = getrhs(tree)
// %c_fft and %b_fft are not defined
X = convert2double(X)
tree.rhs=Rhs_tlist(X,-1)
if size(X.dims)==2 then
if is_a_scalar(X) | is_a_vector(X) then
tree.rhs=Rhs_tlist(X,-1)
elseif not_a_vector(X) then
if X.dims(2)<>Unknown then
tree.rhs=Rhs_tlist(X,-1,X.dims(1),1)
else
tmp=Funcall("size",1,list(X,1),list())
tree.rhs=Rhs_tlist(X,-1,tmp,1)
end
else
tree.name="mtlb_fft"
tree.rhs=Rhs_tlist(X)
end
else
tree.rhs=Rhs_tlist(X,-1,Funcall("firstnonsingleton",1,list(X,"num"),list()),1)
end
tree.lhs(1).dims=X.dims
tree.lhs(1).type=Type(Double,Unknown)
// Y = fft(X,n)
elseif rhs==2 then
[X,n] = getrhs(tree)
X = convert2double(X)
n = convert2double(n)
tree.rhs=Rhs_tlist(X,n)
tree.name="mtlb_fft"
if is_empty(X)
tree.lhs(1).dims=list(0,0)
else
tree.lhs(1).dims=allunknown(X.dims)
end
tree.lhs(1).type=Type(Double,Unknown)
// Three input args
elseif rhs==3 then
[X,n,dim] = getrhs(tree)
X = convert2double(X)
n = convert2double(n)
dim = convert2double(dim)
tree.rhs=Rhs_tlist(X,n,dim)
tree.name="mtlb_fft"
tree.lhs(1).dims=allunknown(X.dims)
tree.lhs(1).type=Type(Double,Unknown)
end
endfunction
|
