35 #ifndef _BLAZE_MATH_LAPACK_GEQRF_H_ 36 #define _BLAZE_MATH_LAPACK_GEQRF_H_ 68 template<
typename MT,
bool SO >
69 void geqrf( DenseMatrix<MT,SO>& A, ElementType_t<MT>* tau );
116 template<
typename MT
128 int m ( numeric_cast<int>( SO ? (~A).
rows() : (~A).
columns() ) );
129 int n ( numeric_cast<int>( SO ? (~A).
columns() : (~A).
rows() ) );
130 int lda ( numeric_cast<int>( (~A).
spacing() ) );
133 if( m == 0 || n == 0 ) {
137 int lwork( ( SO ? n : m ) * lda );
138 const std::unique_ptr<ET[]> work(
new ET[lwork] );
141 geqrf( m, n, (~A).
data(), lda, tau, work.get(), lwork, &info );
144 gelqf( m, n, (~A).
data(), lda, tau, work.get(), lwork, &info );
Constraint on the data type.
Header file for auxiliary alias declarations.
#define BLAZE_CONSTRAINT_MUST_HAVE_MUTABLE_DATA_ACCESS(T)
Constraint on the data type.In case the given data type T does not provide low-level data access to m...
Definition: MutableDataAccess.h:61
MT::ElementType * data(DenseMatrix< MT, SO > &dm) noexcept
Low-level data access to the dense matrix elements.
Definition: DenseMatrix.h:170
#define BLAZE_CONSTRAINT_MUST_NOT_BE_COMPUTATION_TYPE(T)
Constraint on the data type.In case the given data type T is a computational expression (i....
Definition: Computation.h:81
Constraint on the data type.
Constraint on the data type.
Cast operators for numeric types.
constexpr size_t columns(const Matrix< MT, SO > &matrix) noexcept
Returns the current number of columns of the matrix.
Definition: Matrix.h:514
#define BLAZE_CONSTRAINT_MUST_NOT_BE_ADAPTOR_TYPE(T)
Constraint on the data type.In case the given data type T is an adaptor type (as for instance LowerMa...
Definition: Adaptor.h:81
Base class for dense matrices.The DenseMatrix class is a base class for all dense matrix classes....
Definition: DenseMatrix.h:81
typename T::ElementType ElementType_t
Alias declaration for nested ElementType type definitions.The ElementType_t alias declaration provide...
Definition: Aliases.h:170
Header file for the CLAPACK gelqf wrapper functions.
size_t spacing(const DenseMatrix< MT, SO > &dm) noexcept
Returns the spacing between the beginning of two rows/columns.
Definition: DenseMatrix.h:253
Constraint on the data type.
Namespace of the Blaze C++ math library.
Definition: Blaze.h:58
#define BLAZE_CONSTRAINT_MUST_BE_CONTIGUOUS_TYPE(T)
Constraint on the data type.In case the given data type T is not an array-like data type with contigu...
Definition: Contiguous.h:61
Header file for the DenseMatrix base class.
Constraint on the data type.
Header file for run time assertion macros.
void geqrf(int m, int n, float *A, int lda, float *tau, float *work, int lwork, int *info)
LAPACK kernel for the QR decomposition of the given dense single precision column-major matrix.
Definition: geqrf.h:146
#define BLAZE_CONSTRAINT_MUST_BE_BLAS_COMPATIBLE_TYPE(T)
Constraint on the data type.In case the given data type T is not a BLAS compatible data type (i....
Definition: BLASCompatible.h:61
constexpr size_t rows(const Matrix< MT, SO > &matrix) noexcept
Returns the current number of rows of the matrix.
Definition: Matrix.h:498
Header file for the CLAPACK geqrf wrapper functions.
void gelqf(int m, int n, float *A, int lda, float *tau, float *work, int lwork, int *info)
LAPACK kernel for the LQ decomposition of the given dense single precision column-major matrix.
Definition: gelqf.h:146
#define BLAZE_INTERNAL_ASSERT(expr, msg)
Run time assertion macro for internal checks.In case of an invalid run time expression,...
Definition: Assert.h:101