Blaze 3.9
hetri.h
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1//=================================================================================================
33//=================================================================================================
34
35#ifndef _BLAZE_MATH_LAPACK_HETRI_H_
36#define _BLAZE_MATH_LAPACK_HETRI_H_
37
38
39//*************************************************************************************************
40// Includes
41//*************************************************************************************************
42
43#include <memory>
44#include <blaze/math/Aliases.h>
54#include <blaze/util/Assert.h>
56
57
58
59namespace blaze {
60
61//=================================================================================================
62//
63// LAPACK LDLH-BASED INVERSION FUNCTIONS (HETRI)
64//
65//=================================================================================================
66
67//*************************************************************************************************
70template< typename MT, bool SO >
71void hetri( DenseMatrix<MT,SO>& A, char uplo, const blas_int_t* ipiv );
73//*************************************************************************************************
74
75
76//*************************************************************************************************
114template< typename MT // Type of the dense matrix
115 , bool SO > // Storage order of the dense matrix
116inline void hetri( DenseMatrix<MT,SO>& A, char uplo, const blas_int_t* ipiv )
117{
123
124 using ET = ElementType_t<MT>;
125
126 if( !isSquare( *A ) ) {
127 BLAZE_THROW_INVALID_ARGUMENT( "Invalid non-square matrix provided" );
128 }
129
130 if( uplo != 'L' && uplo != 'U' ) {
131 BLAZE_THROW_INVALID_ARGUMENT( "Invalid uplo argument provided" );
132 }
133
134 blas_int_t n ( numeric_cast<blas_int_t>( (*A).columns() ) );
135 blas_int_t lda ( numeric_cast<blas_int_t>( (*A).spacing() ) );
136 blas_int_t info( 0 );
137
138 if( n == 0 ) {
139 return;
140 }
141
142 if( IsRowMajorMatrix_v<MT> ) {
143 ( uplo == 'L' )?( uplo = 'U' ):( uplo = 'L' );
144 }
145
146 const std::unique_ptr<ET[]> work( new ET[n] );
147
148 hetri( uplo, n, (*A).data(), lda, ipiv, work.get(), &info );
149
150 BLAZE_INTERNAL_ASSERT( info >= 0, "Invalid argument for matrix inversion" );
151
152 if( info > 0 ) {
153 BLAZE_THROW_LAPACK_ERROR( "Inversion of singular matrix failed" );
154 }
155}
156//*************************************************************************************************
157
158} // namespace blaze
159
160#endif
Constraint on the data type.
Header file for auxiliary alias declarations.
typename T::ElementType ElementType_t
Alias declaration for nested ElementType type definitions.
Definition: Aliases.h:190
Header file for run time assertion macros.
Constraint on the data type.
Constraint on the data type.
Header file for the IsRowMajorMatrix type trait.
Constraint on the data type.
Cast operators for numeric types.
Header file for the CLAPACK hetri wrapper functions.
Base class for dense matrices.
Definition: DenseMatrix.h:82
Constraint on the data type.
Header file for the DenseMatrix base class.
void hetri(DenseMatrix< MT, SO > &A, char uplo, const blas_int_t *ipiv)
LAPACK kernel for the inversion of the given dense Hermitian indefinite matrix.
Definition: hetri.h:116
#define BLAZE_CONSTRAINT_MUST_BE_BLAS_COMPATIBLE_TYPE(T)
Constraint on the data type.
Definition: BLASCompatible.h:61
#define BLAZE_CONSTRAINT_MUST_BE_CONTIGUOUS_TYPE(T)
Constraint on the data type.
Definition: Contiguous.h:61
#define BLAZE_CONSTRAINT_MUST_NOT_BE_COMPUTATION_TYPE(T)
Constraint on the data type.
Definition: Computation.h:81
#define BLAZE_CONSTRAINT_MUST_NOT_BE_ADAPTOR_TYPE(T)
Constraint on the data type.
Definition: Adaptor.h:81
#define BLAZE_CONSTRAINT_MUST_HAVE_MUTABLE_DATA_ACCESS(T)
Constraint on the data type.
Definition: MutableDataAccess.h:61
int32_t blas_int_t
Signed integer type used in the BLAS/LAPACK wrapper functions.
Definition: Types.h:64
#define BLAZE_THROW_LAPACK_ERROR(MESSAGE)
Macro for the emission of an exception on detection of a LAPACK error.
Definition: Exception.h:146
bool isSquare(const Matrix< MT, SO > &matrix) noexcept
Checks if the given matrix is a square matrix.
Definition: Matrix.h:1383
#define BLAZE_INTERNAL_ASSERT(expr, msg)
Run time assertion macro for internal checks.
Definition: Assert.h:101
#define BLAZE_THROW_INVALID_ARGUMENT(MESSAGE)
Macro for the emission of a std::invalid_argument exception.
Definition: Exception.h:235
Header file for the exception macros of the math module.