Eigen::internal::tribb_kernel< LhsScalar, RhsScalar, Index, mr, nr, ConjLhs, ConjRhs, ResInnerStride, UpLo > Struct Template Reference

#include <GeneralMatrixMatrixTriangular.h>

Public Types
enum	{ BlockSize = meta_least_common_multiple<plain_enum_max(mr, nr), plain_enum_min(mr, nr)>::ret }
typedef gebp_traits< LhsScalar, RhsScalar, ConjLhs, ConjRhs >	Traits
typedef Traits::ResScalar	ResScalar

Public Member Functions
void	operator() (ResScalar *res_, Index resIncr, Index resStride, const LhsScalar *blockA, const RhsScalar *blockB, Index size, Index depth, const ResScalar &alpha)

Member Typedef Documentation

ResScalar

template<typename LhsScalar , typename RhsScalar , typename Index , int mr, int nr, bool ConjLhs, bool ConjRhs, int ResInnerStride, int UpLo>

typedef Traits::ResScalar Eigen::internal::tribb_kernel< LhsScalar, RhsScalar, Index, mr, nr, ConjLhs, ConjRhs, ResInnerStride, UpLo >::ResScalar

Traits

template<typename LhsScalar , typename RhsScalar , typename Index , int mr, int nr, bool ConjLhs, bool ConjRhs, int ResInnerStride, int UpLo>

typedef gebp_traits<LhsScalar, RhsScalar, ConjLhs, ConjRhs> Eigen::internal::tribb_kernel< LhsScalar, RhsScalar, Index, mr, nr, ConjLhs, ConjRhs, ResInnerStride, UpLo >::Traits

Member Enumeration Documentation

anonymous enum

template<typename LhsScalar , typename RhsScalar , typename Index , int mr, int nr, bool ConjLhs, bool ConjRhs, int ResInnerStride, int UpLo>

anonymous enum

Enumerator
BlockSize

{ BlockSize = meta_least_common_multiple<plain_enum_max(mr, nr), plain_enum_min(mr, nr)>::ret };

Member Function Documentation

operator()()

template<typename LhsScalar , typename RhsScalar , typename Index , int mr, int nr, bool ConjLhs, bool ConjRhs, int ResInnerStride, int UpLo>

void Eigen::internal::tribb_kernel< LhsScalar, RhsScalar, Index, mr, nr, ConjLhs, ConjRhs, ResInnerStride, UpLo >::operator() ( ResScalar *  res_, Index  resIncr, Index  resStride, const LhsScalar *  blockA, const RhsScalar *  blockB, Index  size, Index  depth, const ResScalar &  alpha  )

inline

                                                                   {
    typedef blas_data_mapper<ResScalar, Index, ColMajor, Unaligned, ResInnerStride> ResMapper;
    typedef blas_data_mapper<ResScalar, Index, ColMajor, Unaligned> BufferMapper;
    ResMapper res(res_, resStride, resIncr);
    gebp_kernel<LhsScalar, RhsScalar, Index, ResMapper, mr, nr, ConjLhs, ConjRhs> gebp_kernel1;
    gebp_kernel<LhsScalar, RhsScalar, Index, BufferMapper, mr, nr, ConjLhs, ConjRhs> gebp_kernel2;
 
    Matrix<ResScalar, BlockSize, BlockSize, ColMajor> buffer;
 
    // let's process the block per panel of actual_mc x BlockSize,
    // again, each is split into three parts, etc.
    for (Index j = 0; j < size; j += BlockSize) {
      Index actualBlockSize = std::min<Index>(BlockSize, size - j);
      const RhsScalar* actual_b = blockB + j * depth;
 
      if (UpLo == Upper)
        gebp_kernel1(res.getSubMapper(0, j), blockA, actual_b, j, depth, actualBlockSize, alpha, -1, -1, 0, 0);
 
      // selfadjoint micro block
      {
        Index i = j;
        buffer.setZero();
        // 1 - apply the kernel on the temporary buffer
        gebp_kernel2(BufferMapper(buffer.data(), BlockSize), blockA + depth * i, actual_b, actualBlockSize, depth,
                     actualBlockSize, alpha, -1, -1, 0, 0);
 
        // 2 - triangular accumulation
        for (Index j1 = 0; j1 < actualBlockSize; ++j1) {
          typename ResMapper::LinearMapper r = res.getLinearMapper(i, j + j1);
          for (Index i1 = UpLo == Lower ? j1 : 0; UpLo == Lower ? i1 < actualBlockSize : i1 <= j1; ++i1)
            r(i1) += buffer(i1, j1);
        }
      }
 
      if (UpLo == Lower) {
        Index i = j + actualBlockSize;
        gebp_kernel1(res.getSubMapper(i, j), blockA + depth * i, actual_b, size - i, depth, actualBlockSize, alpha, -1,
                     -1, 0, 0);
      }
    }
  }

References actual_b, alpha, Eigen::internal::tribb_kernel< LhsScalar, RhsScalar, Index, mr, nr, ConjLhs, ConjRhs, ResInnerStride, UpLo >::BlockSize, Eigen::PlainObjectBase< Derived >::data(), i, j, Eigen::Lower, UniformPSDSelfTest::r, res, Eigen::PlainObjectBase< Derived >::setZero(), size, and Eigen::Upper.

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The documentation for this struct was generated from the following file:

• GeneralMatrixMatrixTriangular.h