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78 lines
3.6 KiB
78 lines
3.6 KiB
6 years ago
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/*
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Copyright (c) 2011, Intel Corporation. All rights reserved.
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Redistribution and use in source and binary forms, with or without modification,
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are permitted provided that the following conditions are met:
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* Redistributions of source code must retain the above copyright notice, this
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list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright notice,
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this list of conditions and the following disclaimer in the documentation
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and/or other materials provided with the distribution.
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* Neither the name of Intel Corporation nor the names of its contributors may
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be used to endorse or promote products derived from this software without
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specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
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ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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********************************************************************************
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* Content : Eigen bindings to LAPACKe
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* Real Schur needed to real unsymmetrical eigenvalues/eigenvectors.
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********************************************************************************
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*/
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#ifndef EIGEN_REAL_SCHUR_LAPACKE_H
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#define EIGEN_REAL_SCHUR_LAPACKE_H
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namespace Eigen {
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/** \internal Specialization for the data types supported by LAPACKe */
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#define EIGEN_LAPACKE_SCHUR_REAL(EIGTYPE, LAPACKE_TYPE, LAPACKE_PREFIX, LAPACKE_PREFIX_U, EIGCOLROW, LAPACKE_COLROW) \
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template<> template<typename InputType> inline \
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RealSchur<Matrix<EIGTYPE, Dynamic, Dynamic, EIGCOLROW> >& \
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RealSchur<Matrix<EIGTYPE, Dynamic, Dynamic, EIGCOLROW> >::compute(const EigenBase<InputType>& matrix, bool computeU) \
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{ \
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eigen_assert(matrix.cols() == matrix.rows()); \
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\
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lapack_int n = internal::convert_index<lapack_int>(matrix.cols()), sdim, info; \
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lapack_int matrix_order = LAPACKE_COLROW; \
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char jobvs, sort='N'; \
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LAPACK_##LAPACKE_PREFIX_U##_SELECT2 select = 0; \
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jobvs = (computeU) ? 'V' : 'N'; \
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m_matU.resize(n, n); \
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lapack_int ldvs = internal::convert_index<lapack_int>(m_matU.outerStride()); \
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m_matT = matrix; \
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lapack_int lda = internal::convert_index<lapack_int>(m_matT.outerStride()); \
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Matrix<EIGTYPE, Dynamic, Dynamic> wr, wi; \
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wr.resize(n, 1); wi.resize(n, 1); \
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info = LAPACKE_##LAPACKE_PREFIX##gees( matrix_order, jobvs, sort, select, n, (LAPACKE_TYPE*)m_matT.data(), lda, &sdim, (LAPACKE_TYPE*)wr.data(), (LAPACKE_TYPE*)wi.data(), (LAPACKE_TYPE*)m_matU.data(), ldvs ); \
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if(info == 0) \
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m_info = Success; \
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else \
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m_info = NoConvergence; \
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\
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m_isInitialized = true; \
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m_matUisUptodate = computeU; \
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return *this; \
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\
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}
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EIGEN_LAPACKE_SCHUR_REAL(double, double, d, D, ColMajor, LAPACK_COL_MAJOR)
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EIGEN_LAPACKE_SCHUR_REAL(float, float, s, S, ColMajor, LAPACK_COL_MAJOR)
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EIGEN_LAPACKE_SCHUR_REAL(double, double, d, D, RowMajor, LAPACK_ROW_MAJOR)
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EIGEN_LAPACKE_SCHUR_REAL(float, float, s, S, RowMajor, LAPACK_ROW_MAJOR)
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} // end namespace Eigen
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#endif // EIGEN_REAL_SCHUR_LAPACKE_H
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