Visible to Intel only — GUID: GUID-4ABF5159-1A85-4AA2-A45C-07F362E3BCEB
Visible to Intel only — GUID: GUID-4ABF5159-1A85-4AA2-A45C-07F362E3BCEB
mkl_sparse_?_qr_rsolve
Second stage of the solving step of the SPARSE QR solver.
Syntax
sparse_status_t mkl_sparse_d_qr_rsolve ( sparse_operation_t operation, sparse_matrix_t A, sparse_layout_t layout, MKL_INT columns, double *x, MKL_INT ldx, const double *b, MKL_INT ldb );
sparse_status_t mkl_sparse_s_qr_rsolve ( sparse_operation_t operation, sparse_matrix_t A, sparse_layout_t layout, MKL_INT columns, float *x, MKL_INT ldx, const float *b, MKL_INT ldb );
Include Files
- mkl_sparse_qr.h
Description
The mkl_sparse_?_qr_rsolve routine computes the solution of A*x = b.
Input Parameters
- operation
-
Specifies the operation to perform.
NOTE:Currently, the only supported value is SPARSE_OPERATION_NON_TRANSPOSE (non-transpose case; that is, A*x = b is solved). - A
-
Handle containing a sparse matrix in an internal data structure.
- layout
-
Describes the storage scheme for the dense matrix:
SPARSE_LAYOUT_COLUMN_MAJOR Storage of elements uses column-major layout. SPARSE_LAYOUT_ROW_MAJOR Storage of elements uses row-major layout. - x
-
Array with a size of at least rows*cols:
layout = SPARSE_LAYOUT_COLUMN_MAJOR layout = SPARSE_LAYOUT_ROW_MAJOR rows (number of rows in x) ldx Number of columns in A cols (number of columns in x) columns ldx - columns
-
Number of columns in matrix b.
- ldx
-
Specifies the leading dimension of matrix x.
- b
-
Array with a size of at least rows*cols:
layout = SPARSE_LAYOUT_COLUMN_MAJOR layout = SPARSE_LAYOUT_ROW_MAJOR rows (number of rows in b) ldb Number of columns in A cols (number of columns in b) columns ldb - ldb
-
Specifies the leading dimension of matrix b.
Output Parameters
- x
-
Contains the solution of the triangular system R*x = b.
Return Values
- SPARSE_STATUS_SUCCESS
- The operation was successful.
- SPARSE_STATUS_NOT_INITIALIZED
- The routine encountered an empty handle or matrix array.
- SPARSE_STATUS_ALLOC_FAILED
- Internal memory allocation failed.
- SPARSE_STATUS_INVALID_VALUE
- The input parameters contain an invalid value.
- SPARSE_STATUS_EXECUTION_FAILED
- Execution failed.
- SPARSE_STATUS_INTERNAL_ERROR
- An error in algorithm implementation occurred.
- SPARSE_STATUS_NOT_SUPPORTED
- The requested operation is not supported.