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
|
function [C err] = kron_demo (A,B)
%KRON_DEMO test Program/kron_demo.c and compare with MATLAB kron
% Usage:
% [C err] = kron_demo (A,B)
% SuiteSparse:GraphBLAS, Timothy A. Davis, (c) 2017-2020, All Rights Reserved.
% http://suitesparse.com See GraphBLAS/Doc/License.txt for license.
% write A to a file
Afile = fopen ('A.tsv', 'w') ;
[i j x] = find (A) ;
fprintf (Afile, '%d\t%d\t%0.17g\n', [i j x]') ;
fclose (Afile) ;
% write B to a file
Bfile = fopen ('B.tsv', 'w') ;
[i j x] = find (B) ;
fprintf (Bfile, '%d\t%d\t%0.17g\n', [i j x]') ;
fclose (Bfile) ;
% run kron_demo
system ('../../build/kron_demo A.tsv B.tsv C.tsv') ;
% read C from file
load C.tsv ;
C = spconvert (C) ;
% compare with MATLAB
C2 = kron (A, B) ;
err = norm (C-C2, 1) / (norm (A,1) + norm (B,1)) ;
if (err > 1e-14)
error ('invalid Kronecker product') ;
end
delete A.tsv
delete B.tsv
delete C.tsv
|
