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Make use of TRMM (speed up), and remove useless condition (the triangular don't need LU)

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Chen-Pang He
2012-10-02 23:04:23 +08:00
parent 21c2b4e327
commit 4cfde4590f
2 changed files with 5 additions and 5 deletions
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3
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_OKforLU && b.cols()*(pp-applyings) <= m_A.cols()*squarings) {
else if (b.cols()*(pp-applyings) <= m_A.cols()*squarings) {
res = m_T.solve(b);
for (--pp; pp >= 1; --pp)
res = m_T.solve(res);
@@ -301,6 +301,7 @@ class MatrixPower : public MatrixPowerBase<MatrixPower<MatrixType>,MatrixType>
typedef Matrix<std::complex<RealScalar>, RowsAtCompileTime, ColsAtCompileTime,
Options,MaxRowsAtCompileTime,MaxColsAtCompileTime> ComplexMatrix;
static const bool m_OKforLU = RowsAtCompileTime == Dynamic || RowsAtCompileTime > 4;
ComplexMatrix m_T, m_U, m_fT;
RealScalar modfAndInit(RealScalar, RealScalar*);