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Make better decision on PartialPivLU vs inverse(): We have specialized inverse() only for FIXED matrices.

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Chen-Pang He
2012-10-02 19:53:38 +08:00
parent e92fe88159
commit 21c2b4e327
2 changed files with 4 additions and 2 deletions
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4
unsupported/Eigen/src/MatrixFunctions/MatrixPower.h
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@@ -194,7 +194,7 @@ void MatrixPowerTriangular<MatrixType>::computeIntPower(const Derived& b, Result
else if (p>0) {
m_tmp1 = m_T;
}
else if (m_A.cols() > 2 && b.cols()*(pp-applyings) <= m_A.cols()*squarings) {
else if (m_OKforLU && b.cols()*(pp-applyings) <= m_A.cols()*squarings) {
res = m_T.solve(b);
for (--pp; pp >= 1; --pp)
res = m_T.solve(res);
@@ -424,7 +424,7 @@ void MatrixPower<MatrixType>::computeIntPower(const Derived& b, ResultType& res,
else if (p>0) {
m_tmp1 = m_A;
}
else if (m_A.cols() > 2 && b.cols()*(pp-applyings) <= m_A.cols()*squarings) {
else if (m_OKforLU && b.cols()*(pp-applyings) <= m_A.cols()*squarings) {
PartialPivLU<MatrixType> A(m_A);
res = A.solve(b);
for (--pp; pp >= 1; --pp)