Visible to Intel only — GUID: GUID-B1A7855A-9BDD-481B-AEB9-093045CA6540
Visible to Intel only — GUID: GUID-B1A7855A-9BDD-481B-AEB9-093045CA6540
mkl_sparse_?_export_csr
Exports CSR matrix from internal representation.
Syntax
stat = mkl_sparse_s_export_csr (source, indexing, rows, cols, rows_start, rows_end, col_indx, values)
stat = mkl_sparse_d_export_csr (source, indexing, rows, cols, rows_start, rows_end, col_indx, values)
stat = mkl_sparse_c_export_csr (source, indexing, rows, cols, rows_start, rows_end, col_indx, values)
stat = mkl_sparse_z_export_csr (source, indexing, rows, cols, rows_start, rows_end, col_indx, values)
Include Files
- mkl_spblas.f90
Description
If the matrix specified by the source handle is in CSR format, the mkl_sparse_?_export_csr routine exports an m-by-k matrix A in CSR format matrix from the internal representation. The routine returns pointers to the internal representation and does not allocate additional memory.
If the matrix is not already in CSR format, the routine returns SPARSE_STATUS_INVALID_VALUE.
Input Parameters
- source
-
SPARSE_MATRIX_T.
Handle containing internal data.
Output Parameters
- <!-- -->indexing
-
sparse_index_base_t.
Indicates how input arrays are indexed.
SPARSE_INDEX_BASE_ZERO
Zero-based (C-style) indexing: indices start at 0.
SPARSE_INDEX_BASE_ONE
One-based (Fortran-style) indexing: indices start at 1.
- rows
-
C_INT.
Number of rows of the matrix source.
- cols
-
C_INT.
Number of columns of the matrix source.
- rows_start
-
C_INT.
Pointer to array of length m. This array contains row indices, such that rows_start(i) - ind is the first index of row i in the arrays values and col_indx. ind takes 0 for zero-based indexing and 1 for one-based indexing.
Refer to pointerB array description in CSR Format for more details.
- rows_end
-
C_INT.
Pointer to array of length m. This array contains row indices, such that rows_end(i) - ind - 1 is the last index of row i in the arrays values and col_indx. ind takes 0 for zero-based indexing and 1 for one-based indexing.
Refer to pointerE array description in CSR Format for more details.
- col_indx
-
C_INT.
For one-based indexing, pointer to array containing the column indices plus one for each non-zero element of the matrix source. For zero-based indexing, pointer to array containing the column indices for each non-zero element of the matrix source. Its length is rows_end(rows - 1) - ind. ind takes 0 for zero-based indexing and 1 for one-based indexing.
- values
-
C_FLOAT for mkl_sparse_s_export_csr
C_DOUBLE for mkl_sparse_d_export_csr
C_FLOAT_COMPLEX for mkl_sparse_c_export_csr
C_DOUBLE_COMPLEX for mkl_sparse_z_export_csr
Pointer to array containing non-zero elements of the matrix A. Its length is equal to length of the col_indx array.
Refer to values array description in CSR Format for more details.
Output Parameters
- stat
-
INTEGER
Value indicating whether the operation was successful or not, and why:
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.