MKL_support.h

/*
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 are permitted provided that the following conditions are met:
 
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   list of conditions and the following disclaimer.
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   and/or other materials provided with the distribution.
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   be used to endorse or promote products derived from this software without
   specific prior written permission.
 
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 DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
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 (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 Intel(R) MKL
 *   Include file with common MKL declarations
 ********************************************************************************
*/
 
#ifndef EIGEN_MKL_SUPPORT_H
#define EIGEN_MKL_SUPPORT_H
 
#ifdef EIGEN_USE_MKL_ALL
  #ifndef EIGEN_USE_BLAS
    #define EIGEN_USE_BLAS
  #endif
  #ifndef EIGEN_USE_LAPACKE
    #define EIGEN_USE_LAPACKE
  #endif
  #ifndef EIGEN_USE_MKL_VML
    #define EIGEN_USE_MKL_VML
  #endif
#endif
 
#ifdef EIGEN_USE_LAPACKE_STRICT
  #define EIGEN_USE_LAPACKE
#endif
 
#if defined(EIGEN_USE_BLAS) || defined(EIGEN_USE_LAPACKE) || defined(EIGEN_USE_MKL_VML)
  #define EIGEN_USE_MKL
#endif
 
#if defined EIGEN_USE_MKL
#   include <mkl.h> 
/*Check IMKL version for compatibility: < 10.3 is not usable with Eigen*/
#   ifndef INTEL_MKL_VERSION
#       undef EIGEN_USE_MKL /* INTEL_MKL_VERSION is not even defined on older versions */
#   elif INTEL_MKL_VERSION < 100305    /* the intel-mkl-103-release-notes say this was when the lapacke.h interface was added*/
#       undef EIGEN_USE_MKL
#   endif
#   ifndef EIGEN_USE_MKL
    /*If the MKL version is too old, undef everything*/
#       undef   EIGEN_USE_MKL_ALL
#       undef   EIGEN_USE_BLAS
#       undef   EIGEN_USE_LAPACKE
#       undef   EIGEN_USE_MKL_VML
#       undef   EIGEN_USE_LAPACKE_STRICT
#       undef   EIGEN_USE_LAPACKE
#   endif
#endif
 
#if defined EIGEN_USE_MKL
#include <mkl_lapacke.h>
#define EIGEN_MKL_VML_THRESHOLD 128
 
/* MKL_DOMAIN_BLAS, etc are defined only in 10.3 update 7 */
/* MKL_BLAS, etc are not defined in 11.2 */
#ifdef MKL_DOMAIN_ALL
#define EIGEN_MKL_DOMAIN_ALL MKL_DOMAIN_ALL
#else
#define EIGEN_MKL_DOMAIN_ALL MKL_ALL
#endif
 
#ifdef MKL_DOMAIN_BLAS
#define EIGEN_MKL_DOMAIN_BLAS MKL_DOMAIN_BLAS
#else
#define EIGEN_MKL_DOMAIN_BLAS MKL_BLAS
#endif
 
#ifdef MKL_DOMAIN_FFT
#define EIGEN_MKL_DOMAIN_FFT MKL_DOMAIN_FFT
#else
#define EIGEN_MKL_DOMAIN_FFT MKL_FFT
#endif
 
#ifdef MKL_DOMAIN_VML
#define EIGEN_MKL_DOMAIN_VML MKL_DOMAIN_VML
#else
#define EIGEN_MKL_DOMAIN_VML MKL_VML
#endif
 
#ifdef MKL_DOMAIN_PARDISO
#define EIGEN_MKL_DOMAIN_PARDISO MKL_DOMAIN_PARDISO
#else
#define EIGEN_MKL_DOMAIN_PARDISO MKL_PARDISO
#endif
 
namespace Eigen {
 
typedef std::complex<double> dcomplex;
typedef std::complex<float>  scomplex;
 
namespace internal {
 
template<typename MKLType, typename EigenType>
static inline void assign_scalar_eig2mkl(MKLType& mklScalar, const EigenType& eigenScalar) {
  mklScalar=eigenScalar;
}
 
template<typename MKLType, typename EigenType>
static inline void assign_conj_scalar_eig2mkl(MKLType& mklScalar, const EigenType& eigenScalar) {
  mklScalar=eigenScalar;
}
 
template <>
inline void assign_scalar_eig2mkl<MKL_Complex16,dcomplex>(MKL_Complex16& mklScalar, const dcomplex& eigenScalar) {
  mklScalar.real=eigenScalar.real();
  mklScalar.imag=eigenScalar.imag();
}
 
template <>
inline void assign_scalar_eig2mkl<MKL_Complex8,scomplex>(MKL_Complex8& mklScalar, const scomplex& eigenScalar) {
  mklScalar.real=eigenScalar.real();
  mklScalar.imag=eigenScalar.imag();
}
 
template <>
inline void assign_conj_scalar_eig2mkl<MKL_Complex16,dcomplex>(MKL_Complex16& mklScalar, const dcomplex& eigenScalar) {
  mklScalar.real=eigenScalar.real();
  mklScalar.imag=-eigenScalar.imag();
}
 
template <>
inline void assign_conj_scalar_eig2mkl<MKL_Complex8,scomplex>(MKL_Complex8& mklScalar, const scomplex& eigenScalar) {
  mklScalar.real=eigenScalar.real();
  mklScalar.imag=-eigenScalar.imag();
}
 
} // end namespace internal
 
} // end namespace Eigen
 
#endif
 
#endif // EIGEN_MKL_SUPPORT_H