inline
DMatrixSlice::DMatrixSlice( DMatrixSlice& gms, const Range1D& I
, const Range1D& J)
: ptr_( gms.col_ptr(1) + (I.lbound() - 1) + (J.lbound() - 1) * gms.max_rows() )
, max_rows_(gms.max_rows())
, rows_(I.size())
, cols_(J.size())
{
gms.validate_row_subscript(I.ubound());
gms.validate_col_subscript(J.ubound());
}
void DenseLinAlgPack::syr2k(BLAS_Cpp::Transp trans,value_type alpha, const DMatrixSlice& gms_rhs1
, const DMatrixSlice& gms_rhs2, value_type beta, DMatrixSliceSym* sym_lhs)
{
Mp_MtM_assert_sizes( sym_lhs->gms().rows(), sym_lhs->gms().cols(), BLAS_Cpp::no_trans
, gms_rhs1.rows(), gms_rhs1.cols(), trans
, gms_rhs2.rows(), gms_rhs2.cols(), trans_not(trans) );
BLAS_Cpp::syr2k(sym_lhs->uplo(),trans,sym_lhs->gms().rows()
,cols(gms_rhs1.rows(), gms_rhs1.cols(), trans),alpha
,gms_rhs1.col_ptr(1),gms_rhs1.max_rows()
,gms_rhs2.col_ptr(1),gms_rhs2.max_rows(),beta
,sym_lhs->gms().col_ptr(1),sym_lhs->gms().max_rows() );
}
void DenseLinAlgPack::Mp_StMtM(DMatrixSlice* gms_lhs, value_type alpha, const DMatrixSlice& gms_rhs1
, BLAS_Cpp::Transp trans_rhs1, const DMatrixSlice& gms_rhs2
, BLAS_Cpp::Transp trans_rhs2, value_type beta)
{
Mp_MtM_assert_sizes( gms_lhs->rows(), gms_lhs->cols(), BLAS_Cpp::no_trans
, gms_rhs1.rows(), gms_rhs1.cols(), trans_rhs1
, gms_rhs2.rows(), gms_rhs2.cols(), trans_rhs2);
BLAS_Cpp::gemm(trans_rhs1,trans_rhs2,gms_lhs->rows(),gms_lhs->cols()
,cols(gms_rhs1.rows(),gms_rhs1.cols(),trans_rhs1)
,alpha,gms_rhs1.col_ptr(1),gms_rhs1.max_rows()
,gms_rhs2.col_ptr(1),gms_rhs2.max_rows()
,beta,gms_lhs->col_ptr(1),gms_lhs->max_rows() );
}
void DenseLinAlgPack::Vp_StMtV(DVectorSlice* vs_lhs, value_type alpha, const DMatrixSlice& gms_rhs1
, BLAS_Cpp::Transp trans_rhs1, const DVectorSlice& vs_rhs2, value_type beta)
{
Vp_MtV_assert_sizes(vs_lhs->dim(), gms_rhs1.rows() , gms_rhs1.cols(), trans_rhs1
, vs_rhs2.dim());
BLAS_Cpp::gemv(trans_rhs1,gms_rhs1.rows(),gms_rhs1.cols(),alpha,gms_rhs1.col_ptr(1)
,gms_rhs1.max_rows(), vs_rhs2.raw_ptr(),vs_rhs2.stride(),beta,vs_lhs->raw_ptr()
,vs_lhs->stride());
}