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91 lines
4.3 KiB
C++
91 lines
4.3 KiB
C++
/*
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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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* Self-adjoint eigenvalues/eigenvectors.
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********************************************************************************
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*/
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#ifndef EIGEN_SAEIGENSOLVER_LAPACKE_H
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#define EIGEN_SAEIGENSOLVER_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_EIG_SELFADJ(EIGTYPE, LAPACKE_TYPE, LAPACKE_RTYPE, LAPACKE_NAME, EIGCOLROW, LAPACKE_COLROW ) \
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template<> template<typename InputType> inline \
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SelfAdjointEigenSolver<Matrix<EIGTYPE, Dynamic, Dynamic, EIGCOLROW> >& \
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SelfAdjointEigenSolver<Matrix<EIGTYPE, Dynamic, Dynamic, EIGCOLROW> >::compute(const EigenBase<InputType>& matrix, int options) \
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{ \
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eigen_assert(matrix.cols() == matrix.rows()); \
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eigen_assert((options&~(EigVecMask|GenEigMask))==0 \
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&& (options&EigVecMask)!=EigVecMask \
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&& "invalid option parameter"); \
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bool computeEigenvectors = (options&ComputeEigenvectors)==ComputeEigenvectors; \
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lapack_int n = internal::convert_index<lapack_int>(matrix.cols()), lda, matrix_order, info; \
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m_eivalues.resize(n,1); \
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m_subdiag.resize(n-1); \
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m_eivec = matrix; \
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\
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if(n==1) \
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{ \
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m_eivalues.coeffRef(0,0) = numext::real(m_eivec.coeff(0,0)); \
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if(computeEigenvectors) m_eivec.setOnes(n,n); \
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m_info = Success; \
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m_isInitialized = true; \
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m_eigenvectorsOk = computeEigenvectors; \
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return *this; \
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} \
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\
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lda = internal::convert_index<lapack_int>(m_eivec.outerStride()); \
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matrix_order=LAPACKE_COLROW; \
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char jobz, uplo='L'/*, range='A'*/; \
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jobz = computeEigenvectors ? 'V' : 'N'; \
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\
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info = LAPACKE_##LAPACKE_NAME( matrix_order, jobz, uplo, n, (LAPACKE_TYPE*)m_eivec.data(), lda, (LAPACKE_RTYPE*)m_eivalues.data() ); \
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m_info = (info==0) ? Success : NoConvergence; \
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m_isInitialized = true; \
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m_eigenvectorsOk = computeEigenvectors; \
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return *this; \
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}
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EIGEN_LAPACKE_EIG_SELFADJ(double, double, double, dsyev, ColMajor, LAPACK_COL_MAJOR)
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EIGEN_LAPACKE_EIG_SELFADJ(float, float, float, ssyev, ColMajor, LAPACK_COL_MAJOR)
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EIGEN_LAPACKE_EIG_SELFADJ(dcomplex, lapack_complex_double, double, zheev, ColMajor, LAPACK_COL_MAJOR)
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EIGEN_LAPACKE_EIG_SELFADJ(scomplex, lapack_complex_float, float, cheev, ColMajor, LAPACK_COL_MAJOR)
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EIGEN_LAPACKE_EIG_SELFADJ(double, double, double, dsyev, RowMajor, LAPACK_ROW_MAJOR)
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EIGEN_LAPACKE_EIG_SELFADJ(float, float, float, ssyev, RowMajor, LAPACK_ROW_MAJOR)
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EIGEN_LAPACKE_EIG_SELFADJ(dcomplex, lapack_complex_double, double, zheev, RowMajor, LAPACK_ROW_MAJOR)
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EIGEN_LAPACKE_EIG_SELFADJ(scomplex, lapack_complex_float, float, cheev, RowMajor, LAPACK_ROW_MAJOR)
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} // end namespace Eigen
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#endif // EIGEN_SAEIGENSOLVER_H
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