Mercurial > octave-nkf
changeset 13074:0b789a03bde1
codesprint: Add 3 tests for qz.cc
| author | Jordi Gutiérrez Hermoso <jordigh@gmail.com> |
|---|---|
| date | Sat, 03 Sep 2011 15:03:21 -0500 |
| parents | 51bc892d5cf8 |
| children | 386024135ce6 |
| files | src/DLD-FUNCTIONS/qz.cc |
| diffstat | 1 files changed, 28 insertions(+), 0 deletions(-) [+] |
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--- a/src/DLD-FUNCTIONS/qz.cc Sat Sep 03 21:51:26 2011 +0200 +++ b/src/DLD-FUNCTIONS/qz.cc Sat Sep 03 15:03:21 2011 -0500 @@ -287,6 +287,9 @@ return (fabs (p) >= 1 ? 1 : -1); } + +//FIXME: Matlab does not produce lambda as the first output argument. +// Compatibility problem? DEFUN_DLD (qz, args, nargout, "-*- texinfo -*-\n\ @deftypefn {Loadable Function} {@var{lambda} =} qz (@var{A}, @var{B})\n\ @@ -1236,3 +1239,28 @@ return retval; } + +/* +%!shared a, b, c +%! a = [1 2; 0 3]; +%! b = [1 0; 0 0]; +%! c = [0 1; 0 0]; +%!assert(qz (a,b), 1); +%!assert(isempty (qz (a,c))); + +%% Exaple 7.7.3 in Golub & Van Loan +%!test +%! a = [ 10 1 2; +%! 1 2 -1; +%! 1 1 2]; +%! b = reshape(1:9,3,3); +%! [aa, bb, q, z, v, w, lambda] = qz (a, b); +%! sz = length(lambda); +%! assert ( (a*v) (:, 1:sz), (b * v * diag ([lambda;0])) (:, 1:sz), 1e-14); +%! assert ( (w'*a) (1:sz, :) , (diag ([lambda;0]) * w' * b) (1:sz, :), 1e-14); +%! assert (q * a * z, aa, 1e-14); +%! assert (q * b * z, bb, 1e-14); + +%% FIXME: Still need a test for third form of calling qz + +*/