Blaze 3.9
trtri.h
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1//=================================================================================================
33//=================================================================================================
34
35#ifndef _BLAZE_MATH_LAPACK_TRTRI_H_
36#define _BLAZE_MATH_LAPACK_TRTRI_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 TRIANGULAR MATRIX INVERSION FUNCTIONS (TRTRI)
62//
63//=================================================================================================
64
65//*************************************************************************************************
68template< typename MT, bool SO >
69void trtri( DenseMatrix<MT,SO>& A, char uplo, char diag );
71//*************************************************************************************************
72
73
74//*************************************************************************************************
114template< typename MT // Type of the dense matrix
115 , bool SO > // Storage order of the dense matrix
116inline void trtri( DenseMatrix<MT,SO>& A, char uplo, char diag )
117{
123
124 if( !isSquare( *A ) ) {
125 BLAZE_THROW_INVALID_ARGUMENT( "Invalid non-square matrix provided" );
126 }
127
128 if( uplo != 'L' && uplo != 'U' ) {
129 BLAZE_THROW_INVALID_ARGUMENT( "Invalid uplo argument provided" );
130 }
131
132 if( diag != 'U' && diag != 'N' ) {
133 BLAZE_THROW_INVALID_ARGUMENT( "Invalid diag argument provided" );
134 }
135
136 blas_int_t n ( numeric_cast<blas_int_t>( (*A).columns() ) );
137 blas_int_t lda ( numeric_cast<blas_int_t>( (*A).spacing() ) );
138 blas_int_t info( 0 );
139
140 if( n == 0 ) {
141 return;
142 }
143
144 if( IsRowMajorMatrix_v<MT> ) {
145 ( uplo == 'L' )?( uplo = 'U' ):( uplo = 'L' );
146 }
147
148 trtri( uplo, diag, n, (*A).data(), lda, &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 trtri wrapper functions.
Base class for dense matrices.
Definition: DenseMatrix.h:82
Constraint on the data type.
Header file for the DenseMatrix base class.
void trtri(DenseMatrix< MT, SO > &A, char uplo, char diag)
LAPACK kernel for the inversion of the given dense triangular matrix.
Definition: trtri.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.