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add a meta unroller for the triangular solver (only for vectors as rhs)

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This commit is contained in:
Gael Guennebaud
2009-07-10 11:30:46 +02:00
parent 1a1b2e9f27
commit b47dea8b7a
2 changed files with 72 additions and 24 deletions
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12
test/triangular.cpp
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@@ -86,7 +86,17 @@ template<typename MatrixType> void triangular(const MatrixType& m)
while (ei_abs2(m1(i,i))<1e-3) m1(i,i) = ei_random<Scalar>();
Transpose<MatrixType> trm4(m4);
// test back and forward subsitution
// test back and forward subsitution with a vector as the rhs
m3 = m1.template triangularView<Eigen::UpperTriangular>();
VERIFY(v2.isApprox(m3.adjoint() * (m1.adjoint().template triangularView<Eigen::LowerTriangular>().solve(v2)), largerEps));
m3 = m1.template triangularView<Eigen::LowerTriangular>();
VERIFY(v2.isApprox(m3.transpose() * (m1.transpose().template triangularView<Eigen::UpperTriangular>().solve(v2)), largerEps));
m3 = m1.template triangularView<Eigen::UpperTriangular>();
VERIFY(v2.isApprox(m3 * (m1.template triangularView<Eigen::UpperTriangular>().solve(v2)), largerEps));
m3 = m1.template triangularView<Eigen::LowerTriangular>();
VERIFY(v2.isApprox(m3.conjugate() * (m1.conjugate().template triangularView<Eigen::LowerTriangular>().solve(v2)), largerEps));
// test back and forward subsitution with a matrix as the rhs
m3 = m1.template triangularView<Eigen::UpperTriangular>();
VERIFY(m2.isApprox(m3.adjoint() * (m1.adjoint().template triangularView<Eigen::LowerTriangular>().solve(m2)), largerEps));
m3 = m1.template triangularView<Eigen::LowerTriangular>();