mkl_sparse_?_export

Developer Reference for Intel® oneAPI Math Kernel Library for Fortran

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ID 766686

Date 6/30/2025

Version

Public

mkl_sparse_?_export_coo

Exports COO matrix from internal representation.

Syntax

stat = mkl_sparse_s_export_coo (source, indexing, rows, cols, nnz, rows_indx, cols_indx, values)
stat = mkl_sparse_d_export_coo (source, indexing, rows, cols, nnz, rows_indx, cols_indx, values)
stat = mkl_sparse_c_export_coo (source, indexing, rows, cols, nnz, rows_indx, cols_indx, values)
stat = mkl_sparse_z_export_coo (source, indexing, rows, cols, nnz, rows_indx, cols_indx, values)

Include Files

mkl_spblas.f90

Description

If the matrix specified by the source handle is in Coordinate (COO) format, the mkl_sparse_?_export_coo routine exports a rows-by-cols matrix A using COO as the internal representation. The routine returns pointers to the internal representation and does not allocate additional memory.

If the matrix is not already in COO 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.

nnz

C_INT.

Number of non-zero elements of the matrix source.

rows_indx

C_INT.

Pointer to array of length rows. This array contains row indices, such that rows_start(i) - ind is the first index of row i in the arrays values and cols_indx. ind takes 0 for zero-based indexing and 1 for one-based indexing.

Refer to the COO Format description for more details.

cols_indx

C_INT.

Pointer to an array of length nnz. This array contains the column indices such that cols_indx[i] is the column index of element i in COO representation. The array is indexed according to the value returned by the indexing variable.

Refer to the COO Format description for more details.

values

C_FLOAT for mkl_sparse_s_export_coo

C_DOUBLE for mkl_sparse_d_export_coo

C_FLOAT_COMPLEX for mkl_sparse_c_export_coo

C_DOUBLE_COMPLEX for mkl_sparse_z_export_coo

Pointer to an array of length nnz. This array contains the values of the matrix A, such that values[i] is the value of element i in COO representation.

Refer to the COO Format description for more details.

Output Parameters

stat: INTEGER.

Parent topic: Matrix Manipulation Routines

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Developer Reference for Intel® oneAPI Math Kernel Library for Fortran

mkl_sparse_?_export_coo

Syntax

Include Files

Description

Input Parameters

Output Parameters

Output Parameters