1 | /*
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2 | Copyright (c) 2011, Intel Corporation. All rights reserved.
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3 |
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4 | Redistribution and use in source and binary forms, with or without modification,
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5 | are permitted provided that the following conditions are met:
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6 |
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7 | * Redistributions of source code must retain the above copyright notice, this
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8 | list of conditions and the following disclaimer.
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9 | * Redistributions in binary form must reproduce the above copyright notice,
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10 | this list of conditions and the following disclaimer in the documentation
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11 | and/or other materials provided with the distribution.
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12 | * Neither the name of Intel Corporation nor the names of its contributors may
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13 | be used to endorse or promote products derived from this software without
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14 | specific prior written permission.
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15 |
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16 | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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17 | ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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18 | WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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19 | DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
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20 | ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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21 | (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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22 | LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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23 | ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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24 | (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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25 | SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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26 |
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27 | ********************************************************************************
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28 | * Content : Eigen bindings to Intel(R) MKL
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29 | * Householder QR decomposition of a matrix w/o pivoting based on
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30 | * LAPACKE_?geqrf function.
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31 | ********************************************************************************
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32 | */
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33 |
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34 | #ifndef EIGEN_QR_MKL_H
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35 | #define EIGEN_QR_MKL_H
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36 |
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37 | #include "../Core/util/MKL_support.h"
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38 |
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39 | namespace Eigen {
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40 |
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41 | namespace internal {
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42 |
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43 | /** \internal Specialization for the data types supported by MKL */
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44 |
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45 | #define EIGEN_MKL_QR_NOPIV(EIGTYPE, MKLTYPE, MKLPREFIX) \
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46 | template<typename MatrixQR, typename HCoeffs> \
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47 | struct householder_qr_inplace_blocked<MatrixQR, HCoeffs, EIGTYPE, true> \
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48 | { \
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49 | static void run(MatrixQR& mat, HCoeffs& hCoeffs, \
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50 | typename MatrixQR::Index = 32, \
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51 | typename MatrixQR::Scalar* = 0) \
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52 | { \
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53 | lapack_int m = (lapack_int) mat.rows(); \
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54 | lapack_int n = (lapack_int) mat.cols(); \
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55 | lapack_int lda = (lapack_int) mat.outerStride(); \
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56 | lapack_int matrix_order = (MatrixQR::IsRowMajor) ? LAPACK_ROW_MAJOR : LAPACK_COL_MAJOR; \
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57 | LAPACKE_##MKLPREFIX##geqrf( matrix_order, m, n, (MKLTYPE*)mat.data(), lda, (MKLTYPE*)hCoeffs.data()); \
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58 | hCoeffs.adjointInPlace(); \
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59 | } \
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60 | };
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61 |
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62 | EIGEN_MKL_QR_NOPIV(double, double, d)
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63 | EIGEN_MKL_QR_NOPIV(float, float, s)
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64 | EIGEN_MKL_QR_NOPIV(dcomplex, MKL_Complex16, z)
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65 | EIGEN_MKL_QR_NOPIV(scomplex, MKL_Complex8, c)
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66 |
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67 | } // end namespace internal
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68 |
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69 | } // end namespace Eigen
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70 |
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71 | #endif // EIGEN_QR_MKL_H
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