Blaze 3.9
potri.h
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1//=================================================================================================
33//=================================================================================================
34
35#ifndef _BLAZE_MATH_LAPACK_POTRI_H_
36#define _BLAZE_MATH_LAPACK_POTRI_H_
37
38
39//*************************************************************************************************
40// Includes
41//*************************************************************************************************
42
43#include <blaze/math/Aliases.h>
53#include <blaze/util/Assert.h>
55
56
57namespace blaze {
58
59//=================================================================================================
60//
61// LAPACK LLH-BASED INVERSION FUNCTIONS (POTRI)
62//
63//=================================================================================================
64
65//*************************************************************************************************
68template< typename MT, bool SO >
69void potri( DenseMatrix<MT,SO>& A, char uplo );
71//*************************************************************************************************
72
73
74//*************************************************************************************************
113template< typename MT // Type of the dense matrix
114 , bool SO > // Storage order of the dense matrix
115inline void potri( DenseMatrix<MT,SO>& A, char uplo )
116{
122
123 if( !isSquare( *A ) ) {
124 BLAZE_THROW_INVALID_ARGUMENT( "Invalid non-square matrix provided" );
125 }
126
127 if( uplo != 'L' && uplo != 'U' ) {
128 BLAZE_THROW_INVALID_ARGUMENT( "Invalid uplo argument provided" );
129 }
130
131 blas_int_t n ( numeric_cast<blas_int_t>( (*A).columns() ) );
132 blas_int_t lda ( numeric_cast<blas_int_t>( (*A).spacing() ) );
133 blas_int_t info( 0 );
134
135 if( n == 0 ) {
136 return;
137 }
138
139 if( IsRowMajorMatrix_v<MT> ) {
140 ( uplo == 'L' )?( uplo = 'U' ):( uplo = 'L' );
141 }
142
143 potri( uplo, n, (*A).data(), lda, &info );
144
145 BLAZE_INTERNAL_ASSERT( info >= 0, "Invalid argument for matrix inversion" );
146
147 if( info > 0 ) {
148 BLAZE_THROW_LAPACK_ERROR( "Inversion of singular matrix failed" );
149 }
150}
151//*************************************************************************************************
152
153} // namespace blaze
154
155#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 potri wrapper functions.
Base class for dense matrices.
Definition: DenseMatrix.h:82
Constraint on the data type.
Header file for the DenseMatrix base class.
void potri(DenseMatrix< MT, SO > &A, char uplo)
LAPACK kernel for the inversion of the given dense positive definite matrix.
Definition: potri.h:115
#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.