1*bf2c3715SXin Li /* 2*bf2c3715SXin Li Copyright (c) 2011, Intel Corporation. All rights reserved. 3*bf2c3715SXin Li 4*bf2c3715SXin Li Redistribution and use in source and binary forms, with or without modification, 5*bf2c3715SXin Li are permitted provided that the following conditions are met: 6*bf2c3715SXin Li 7*bf2c3715SXin Li * Redistributions of source code must retain the above copyright notice, this 8*bf2c3715SXin Li list of conditions and the following disclaimer. 9*bf2c3715SXin Li * Redistributions in binary form must reproduce the above copyright notice, 10*bf2c3715SXin Li this list of conditions and the following disclaimer in the documentation 11*bf2c3715SXin Li and/or other materials provided with the distribution. 12*bf2c3715SXin Li * Neither the name of Intel Corporation nor the names of its contributors may 13*bf2c3715SXin Li be used to endorse or promote products derived from this software without 14*bf2c3715SXin Li specific prior written permission. 15*bf2c3715SXin Li 16*bf2c3715SXin Li THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND 17*bf2c3715SXin Li ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 18*bf2c3715SXin Li WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 19*bf2c3715SXin Li DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR 20*bf2c3715SXin Li ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 21*bf2c3715SXin Li (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 22*bf2c3715SXin Li LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON 23*bf2c3715SXin Li ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24*bf2c3715SXin Li (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 25*bf2c3715SXin Li SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26*bf2c3715SXin Li 27*bf2c3715SXin Li ******************************************************************************** 28*bf2c3715SXin Li * Content : Eigen bindings to LAPACKe 29*bf2c3715SXin Li * Self-adjoint eigenvalues/eigenvectors. 30*bf2c3715SXin Li ******************************************************************************** 31*bf2c3715SXin Li */ 32*bf2c3715SXin Li 33*bf2c3715SXin Li #ifndef EIGEN_SAEIGENSOLVER_LAPACKE_H 34*bf2c3715SXin Li #define EIGEN_SAEIGENSOLVER_LAPACKE_H 35*bf2c3715SXin Li 36*bf2c3715SXin Li namespace Eigen { 37*bf2c3715SXin Li 38*bf2c3715SXin Li /** \internal Specialization for the data types supported by LAPACKe */ 39*bf2c3715SXin Li 40*bf2c3715SXin Li #define EIGEN_LAPACKE_EIG_SELFADJ_2(EIGTYPE, LAPACKE_TYPE, LAPACKE_RTYPE, LAPACKE_NAME, EIGCOLROW ) \ 41*bf2c3715SXin Li template<> template<typename InputType> inline \ 42*bf2c3715SXin Li SelfAdjointEigenSolver<Matrix<EIGTYPE, Dynamic, Dynamic, EIGCOLROW> >& \ 43*bf2c3715SXin Li SelfAdjointEigenSolver<Matrix<EIGTYPE, Dynamic, Dynamic, EIGCOLROW> >::compute(const EigenBase<InputType>& matrix, int options) \ 44*bf2c3715SXin Li { \ 45*bf2c3715SXin Li eigen_assert(matrix.cols() == matrix.rows()); \ 46*bf2c3715SXin Li eigen_assert((options&~(EigVecMask|GenEigMask))==0 \ 47*bf2c3715SXin Li && (options&EigVecMask)!=EigVecMask \ 48*bf2c3715SXin Li && "invalid option parameter"); \ 49*bf2c3715SXin Li bool computeEigenvectors = (options&ComputeEigenvectors)==ComputeEigenvectors; \ 50*bf2c3715SXin Li lapack_int n = internal::convert_index<lapack_int>(matrix.cols()), lda, info; \ 51*bf2c3715SXin Li m_eivalues.resize(n,1); \ 52*bf2c3715SXin Li m_subdiag.resize(n-1); \ 53*bf2c3715SXin Li m_eivec = matrix; \ 54*bf2c3715SXin Li \ 55*bf2c3715SXin Li if(n==1) \ 56*bf2c3715SXin Li { \ 57*bf2c3715SXin Li m_eivalues.coeffRef(0,0) = numext::real(m_eivec.coeff(0,0)); \ 58*bf2c3715SXin Li if(computeEigenvectors) m_eivec.setOnes(n,n); \ 59*bf2c3715SXin Li m_info = Success; \ 60*bf2c3715SXin Li m_isInitialized = true; \ 61*bf2c3715SXin Li m_eigenvectorsOk = computeEigenvectors; \ 62*bf2c3715SXin Li return *this; \ 63*bf2c3715SXin Li } \ 64*bf2c3715SXin Li \ 65*bf2c3715SXin Li lda = internal::convert_index<lapack_int>(m_eivec.outerStride()); \ 66*bf2c3715SXin Li char jobz, uplo='L'/*, range='A'*/; \ 67*bf2c3715SXin Li jobz = computeEigenvectors ? 'V' : 'N'; \ 68*bf2c3715SXin Li \ 69*bf2c3715SXin Li info = LAPACKE_##LAPACKE_NAME( LAPACK_COL_MAJOR, jobz, uplo, n, (LAPACKE_TYPE*)m_eivec.data(), lda, (LAPACKE_RTYPE*)m_eivalues.data() ); \ 70*bf2c3715SXin Li m_info = (info==0) ? Success : NoConvergence; \ 71*bf2c3715SXin Li m_isInitialized = true; \ 72*bf2c3715SXin Li m_eigenvectorsOk = computeEigenvectors; \ 73*bf2c3715SXin Li return *this; \ 74*bf2c3715SXin Li } 75*bf2c3715SXin Li 76*bf2c3715SXin Li #define EIGEN_LAPACKE_EIG_SELFADJ(EIGTYPE, LAPACKE_TYPE, LAPACKE_RTYPE, LAPACKE_NAME ) \ 77*bf2c3715SXin Li EIGEN_LAPACKE_EIG_SELFADJ_2(EIGTYPE, LAPACKE_TYPE, LAPACKE_RTYPE, LAPACKE_NAME, ColMajor ) \ 78*bf2c3715SXin Li EIGEN_LAPACKE_EIG_SELFADJ_2(EIGTYPE, LAPACKE_TYPE, LAPACKE_RTYPE, LAPACKE_NAME, RowMajor ) 79*bf2c3715SXin Li 80*bf2c3715SXin Li EIGEN_LAPACKE_EIG_SELFADJ(double, double, double, dsyev) 81*bf2c3715SXin Li EIGEN_LAPACKE_EIG_SELFADJ(float, float, float, ssyev) 82*bf2c3715SXin Li EIGEN_LAPACKE_EIG_SELFADJ(dcomplex, lapack_complex_double, double, zheev) 83*bf2c3715SXin Li EIGEN_LAPACKE_EIG_SELFADJ(scomplex, lapack_complex_float, float, cheev) 84*bf2c3715SXin Li 85*bf2c3715SXin Li } // end namespace Eigen 86*bf2c3715SXin Li 87*bf2c3715SXin Li #endif // EIGEN_SAEIGENSOLVER_H 88