Tim Toolan

Also, support for PLASMA routines would be nice.

Qianyong Chen, I think the segfault was because lwork was too small; doing as follows doesn't seem to crash matlab. The fortranError as well as fortranError_SVD remain both numerically zero.

A = rand(118,106);

% 1st: results from direct matlab
[UM, SM, VM] = svd(A);

matlabError = max(max(abs(A-UM*SM*VM')))

% 2nd: results when using 'lapack' by Tim Toolan
[m,n] = size(A);

C = lapack('DGESVD', 'A','A',m, ...
n,A,m, zeros(n,1), zeros(m),m,zeros(n),n,zeros(1,1),-1,0)
lwork = C{end-2}(1);
C = lapack('DGESVD', 'A','A',m, ...
n,A,m, zeros(n,1), zeros(m),m,zeros(n),n,zeros(lwork,1),lwork,0);
[SF, UF, VFt] = C{[7,8,10]};
VF = VFt';

fortranError_U = max(max(abs(UM - UF)))
fortranError_V = max(max(abs(VM - VF)))
fortranError_SVD = max(abs(SF - diag(SM) ))

fortranError = max(max(abs( A - UF * SM * VF')))