jiri/LA_library
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

*** empty log message ***

Browse Source
This commit is contained in:
jiri
2010-01-11 10:12:28 +00:00
parent 12c88e6872
commit 8ec7c11a6e
6 changed files with 92 additions and 42 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
t.cc
View File

@@ -1555,17 +1555,17 @@ if(1)
{
int n;
cin >>n;
SparseSMat<double> bh(n);
SparseSMat<double> bh(n,n);
for(int i=0; i<=n/400; ++i) for(int j=i; j<n; ++j) {if((double)random()/RAND_MAX>0.995 || i==j)
{bh.add(i,j,(double)random()/RAND_MAX*(i==j?10.:(random()>RAND_MAX/2?1:-1)),false);}}
if(n<1000) cout <<"Random matrix\n"<<bh;
SparseSMat<double> bb(n);
SparseSMat<double> bb(n,n);
bb.gemm(0.,bh,'c',bh,'n',1.);
if(n<1000) cout <<"Input matrix\n"<<bb;
cout <<"Original filling = "<<bb.simplify()<<endl;
SparseSMat<double> b = bb.cholesky();
if(n<1000) cout <<"Cholesky result\n"<<b;
SparseSMat<double> br(n);
SparseSMat<double> br(n,n);
br.gemm(0.,b,'c',b,'n',1.);
if(n<1000) cout <<"Result of reconstruction\n"<<br;
if(n<1000) cout <<"Difference\n"<<br-bb;