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
|
// 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 f=%r_j_s(f,s)
// p.^s for p rational matrix
//!
if s==[] then f=[],return,end
if or(imag(s)<>0)|or(int(s)<>s) then error(30),end
[m,n]=size(f)
[ms,ns]=size(s)
if ms==1&ns==1 then
if s<0 then
num=f("num")
if or(abs(coeff(num(:)))*ones(max(degree(num))+1,1)==0) then
error(27)
end
s=-s
f=rlist(f("den").^s,f("num").^s,f("dt"))
else
f=rlist(f("num").^s,f("den").^s,f("dt"))
end
elseif m==1&n==1 then // Element wise exponentiation f.^s with f "scalar"
kp=find(s>=0)
kn=find(s<0)
num=ones(s)
den=ones(s)
num(kp)=f("num").^s(kp)
den(kp)=f("den").^s(kp)
p=1/f
num(kn)=p("num").^(-s(kn))
den(kn)=p("den").^(-s(kn))
f=rlist(num,den,[])
elseif ms==m&ns==n then // Element wise exponentiation
s=s(:);
kp=find(s>=0)
kn=find(s<0)
num=f("num")(:);
den=f("den")(:);
num(kp)=num(kp).^s(kp)
den(kp)=den(kp).^s(kp)
if or(abs(coeff(num(kn)))*ones(max(degree(num(kn)))+1,1)==0) then
error(27)
end
num(kn)=den(kn).^(-s(kn))
den(kn)=num(kn).^(-s(kn))
f=rlist(matrix(num,n,m),matrix(den,n,m),[])
else
error(30)
end
endfunction
|
