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
|
function test4
%TEST4 test cs_multiply
%
% Example:
% test4
% See also: testall
% Copyright 2006-2007, Timothy A. Davis.
% http://www.cise.ufl.edu/research/sparse
rand ('state', 0) ;
for trial = 1:100
m = fix (100 * rand (1)) ;
n = fix (100 * rand (1)) ;
k = fix (100 * rand (1)) ;
d = rand (1) ;
A = sprandn (m,n,d) ;
B = sprandn (n,k,d) ;
C = A*B ;
D = cs_multiply (A,B) ;
err = nnz (spones (C) - spones (D)) ;
if (err > 0)
error ('nz!') ;
end
err = norm (C-D,1) ;
fprintf ('m %3d n %3d k %3d nnz(A) %6d nnz(B) %6d nnz(C) %6d err %g\n', ...
m, n, k, nnz(A), nnz(B), nnz(C), err) ;
if (err > 1e-12)
error ('!') ;
end
end
|
