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      1 /*
      2  Copyright (c) 2011, Intel Corporation. All rights reserved.
      3 
      4  Redistribution and use in source and binary forms, with or without modification,
      5  are permitted provided that the following conditions are met:
      6 
      7  * Redistributions of source code must retain the above copyright notice, this
      8    list of conditions and the following disclaimer.
      9  * Redistributions in binary form must reproduce the above copyright notice,
     10    this list of conditions and the following disclaimer in the documentation
     11    and/or other materials provided with the distribution.
     12  * Neither the name of Intel Corporation nor the names of its contributors may
     13    be used to endorse or promote products derived from this software without
     14    specific prior written permission.
     15 
     16  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
     17  ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     18  WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
     19  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
     20  ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
     21  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     22  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
     23  ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     24  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
     25  SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     26 
     27  ********************************************************************************
     28  *   Content : Eigen bindings to Intel(R) MKL
     29  *   Include file with common MKL declarations
     30  ********************************************************************************
     31 */
     32 
     33 #ifndef EIGEN_MKL_SUPPORT_H
     34 #define EIGEN_MKL_SUPPORT_H
     35 
     36 #ifdef EIGEN_USE_MKL_ALL
     37   #ifndef EIGEN_USE_BLAS
     38     #define EIGEN_USE_BLAS
     39   #endif
     40   #ifndef EIGEN_USE_LAPACKE
     41     #define EIGEN_USE_LAPACKE
     42   #endif
     43   #ifndef EIGEN_USE_MKL_VML
     44     #define EIGEN_USE_MKL_VML
     45   #endif
     46 #endif
     47 
     48 #ifdef EIGEN_USE_LAPACKE_STRICT
     49   #define EIGEN_USE_LAPACKE
     50 #endif
     51 
     52 #if defined(EIGEN_USE_BLAS) || defined(EIGEN_USE_LAPACKE) || defined(EIGEN_USE_MKL_VML)
     53   #define EIGEN_USE_MKL
     54 #endif
     55 
     56 #if defined EIGEN_USE_MKL
     57 
     58 #include <mkl.h>
     59 #include <mkl_lapacke.h>
     60 #define EIGEN_MKL_VML_THRESHOLD 128
     61 
     62 namespace Eigen {
     63 
     64 typedef std::complex<double> dcomplex;
     65 typedef std::complex<float>  scomplex;
     66 
     67 namespace internal {
     68 
     69 template<typename MKLType, typename EigenType>
     70 static inline void assign_scalar_eig2mkl(MKLType& mklScalar, const EigenType& eigenScalar) {
     71   mklScalar=eigenScalar;
     72 }
     73 
     74 template<typename MKLType, typename EigenType>
     75 static inline void assign_conj_scalar_eig2mkl(MKLType& mklScalar, const EigenType& eigenScalar) {
     76   mklScalar=eigenScalar;
     77 }
     78 
     79 template <>
     80 inline void assign_scalar_eig2mkl<MKL_Complex16,dcomplex>(MKL_Complex16& mklScalar, const dcomplex& eigenScalar) {
     81   mklScalar.real=eigenScalar.real();
     82   mklScalar.imag=eigenScalar.imag();
     83 }
     84 
     85 template <>
     86 inline void assign_scalar_eig2mkl<MKL_Complex8,scomplex>(MKL_Complex8& mklScalar, const scomplex& eigenScalar) {
     87   mklScalar.real=eigenScalar.real();
     88   mklScalar.imag=eigenScalar.imag();
     89 }
     90 
     91 template <>
     92 inline void assign_conj_scalar_eig2mkl<MKL_Complex16,dcomplex>(MKL_Complex16& mklScalar, const dcomplex& eigenScalar) {
     93   mklScalar.real=eigenScalar.real();
     94   mklScalar.imag=-eigenScalar.imag();
     95 }
     96 
     97 template <>
     98 inline void assign_conj_scalar_eig2mkl<MKL_Complex8,scomplex>(MKL_Complex8& mklScalar, const scomplex& eigenScalar) {
     99   mklScalar.real=eigenScalar.real();
    100   mklScalar.imag=-eigenScalar.imag();
    101 }
    102 
    103 } // end namespace internal
    104 
    105 } // end namespace Eigen
    106 
    107 #endif
    108 
    109 #endif // EIGEN_MKL_SUPPORT_H
    110