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add reconstructedMatrix() to LLT, and LUs

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=> they show that some improvements have still to be done
   for permutations, tr*tr, trapezoidal matrices
This commit is contained in:
Gael Guennebaud
2010-02-24 19:16:10 +01:00
parent a7e4c0f825
commit 7c98c04412
6 changed files with 87 additions and 6 deletions
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21
test/lu.cpp
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@@ -91,6 +91,7 @@ template<typename MatrixType> void lu_non_invertible()
KernelMatrixType m1kernel = lu.kernel();
ImageMatrixType m1image = lu.image(m1);
VERIFY_IS_APPROX(m1, lu.reconstructedMatrix());
VERIFY(rank == lu.rank());
VERIFY(cols - lu.rank() == lu.dimensionOfKernel());
VERIFY(!lu.isInjective());
@@ -125,6 +126,7 @@ template<typename MatrixType> void lu_invertible()
lu.compute(m1);
} while(!lu.isInvertible());
VERIFY_IS_APPROX(m1, lu.reconstructedMatrix());
VERIFY(0 == lu.dimensionOfKernel());
VERIFY(lu.kernel().cols() == 1); // the kernel() should consist of a single (zero) column vector
VERIFY(size == lu.rank());
@@ -138,6 +140,23 @@ template<typename MatrixType> void lu_invertible()
VERIFY_IS_APPROX(m2, lu.inverse()*m3);
}
template<typename MatrixType> void lu_partial_piv()
{
/* this test covers the following files:
PartialPivLU.h
*/
typedef typename MatrixType::Scalar Scalar;
typedef typename NumTraits<typename MatrixType::Scalar>::Real RealScalar;
int rows = ei_random<int>(1,4);
int cols = rows;
MatrixType m1(cols, rows);
m1.setRandom();
PartialPivLU<MatrixType> plu(m1);
VERIFY_IS_APPROX(m1, plu.reconstructedMatrix());
}
template<typename MatrixType> void lu_verify_assert()
{
MatrixType tmp;
@@ -180,6 +199,7 @@ void test_lu()
CALL_SUBTEST_4( lu_non_invertible<MatrixXd>() );
CALL_SUBTEST_4( lu_invertible<MatrixXd>() );
CALL_SUBTEST_4( lu_partial_piv<MatrixXd>() );
CALL_SUBTEST_4( lu_verify_assert<MatrixXd>() );
CALL_SUBTEST_5( lu_non_invertible<MatrixXcf>() );
@@ -188,6 +208,7 @@ void test_lu()
CALL_SUBTEST_6( lu_non_invertible<MatrixXcd>() );
CALL_SUBTEST_6( lu_invertible<MatrixXcd>() );
CALL_SUBTEST_6( lu_partial_piv<MatrixXcd>() );
CALL_SUBTEST_6( lu_verify_assert<MatrixXcd>() );
CALL_SUBTEST_7(( lu_non_invertible<Matrix<float,Dynamic,16> >() ));