| /* |
| Copyright (c) 2011, Intel Corporation. All rights reserved. |
| |
| Redistribution and use in source and binary forms, with or without modification, |
| are permitted provided that the following conditions are met: |
| |
| * Redistributions of source code must retain the above copyright notice, this |
| list of conditions and the following disclaimer. |
| * Redistributions in binary form must reproduce the above copyright notice, |
| this list of conditions and the following disclaimer in the documentation |
| and/or other materials provided with the distribution. |
| * Neither the name of Intel Corporation nor the names of its contributors may |
| be used to endorse or promote products derived from this software without |
| specific prior written permission. |
| |
| THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND |
| ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
| WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR |
| ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
| (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON |
| ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| |
| ******************************************************************************** |
| * Content : Eigen bindings to LAPACKe |
| * Householder QR decomposition of a matrix w/o pivoting based on |
| * LAPACKE_?geqrf function. |
| ******************************************************************************** |
| */ |
| |
| #ifndef EIGEN_QR_LAPACKE_H |
| #define EIGEN_QR_LAPACKE_H |
| |
| namespace Eigen { |
| |
| namespace internal { |
| |
| /** \internal Specialization for the data types supported by LAPACKe */ |
| |
| #define EIGEN_LAPACKE_QR_NOPIV(EIGTYPE, LAPACKE_TYPE, LAPACKE_PREFIX) \ |
| template<typename MatrixQR, typename HCoeffs> \ |
| struct householder_qr_inplace_blocked<MatrixQR, HCoeffs, EIGTYPE, true> \ |
| { \ |
| static void run(MatrixQR& mat, HCoeffs& hCoeffs, Index = 32, \ |
| typename MatrixQR::Scalar* = 0) \ |
| { \ |
| lapack_int m = (lapack_int) mat.rows(); \ |
| lapack_int n = (lapack_int) mat.cols(); \ |
| lapack_int lda = (lapack_int) mat.outerStride(); \ |
| lapack_int matrix_order = (MatrixQR::IsRowMajor) ? LAPACK_ROW_MAJOR : LAPACK_COL_MAJOR; \ |
| LAPACKE_##LAPACKE_PREFIX##geqrf( matrix_order, m, n, (LAPACKE_TYPE*)mat.data(), lda, (LAPACKE_TYPE*)hCoeffs.data()); \ |
| hCoeffs.adjointInPlace(); \ |
| } \ |
| }; |
| |
| EIGEN_LAPACKE_QR_NOPIV(double, double, d) |
| EIGEN_LAPACKE_QR_NOPIV(float, float, s) |
| EIGEN_LAPACKE_QR_NOPIV(dcomplex, lapack_complex_double, z) |
| EIGEN_LAPACKE_QR_NOPIV(scomplex, lapack_complex_float, c) |
| |
| } // end namespace internal |
| |
| } // end namespace Eigen |
| |
| #endif // EIGEN_QR_LAPACKE_H |