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Diffstat (limited to 'Eigen/src/QR/HouseholderQR_LAPACKE.h')
| -rw-r--r-- | Eigen/src/QR/HouseholderQR_LAPACKE.h | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/Eigen/src/QR/HouseholderQR_LAPACKE.h b/Eigen/src/QR/HouseholderQR_LAPACKE.h new file mode 100644 index 000000000..1dc7d5363 --- /dev/null +++ b/Eigen/src/QR/HouseholderQR_LAPACKE.h @@ -0,0 +1,68 @@ +/* + 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 |