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47 lines
1.5 KiB
47 lines
1.5 KiB
#ifndef CSR_SPARSE_MATRIX_H /* Include guard */
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#define CSR_SPARSE_MATRIX_H
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/* ===== INCLUDES ===== */
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#include <stdbool.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <stdlib.h>
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/* ===== STRUCTURES ===== */
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// A sparse matrix in compressed SparseRow format.
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typedef struct csrSparseMatrix {
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int size, numberOfNonZeroElements;
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int *rowCumulativeIndexes, *columnIndexes;
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double *values;
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} CsrSparseMatrix;
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/* ===== FUNCTION DEFINITIONS ===== */
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// initCsrSparseMatrix creates and initializes the members of a CsrSparseMatrix
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// structure instance.
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CsrSparseMatrix initCsrSparseMatrix();
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// allocMemoryForCsr allocates memory for the elements of the matrix.
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void allocMemoryForCsr(CsrSparseMatrix *sparseMatrix, int numberOfElements);
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// zeroOutRow assigns a zero value to all the elements of a row in the matrix.
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void zeroOutRow(CsrSparseMatrix *sparseMatrix, int row);
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// zeroOutColumn assigns a zero value to all the elements of a column in the
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// matrix.
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void zeroOutColumn(CsrSparseMatrix *sparseMatrix, int column);
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// csrSparseMatrixVectorMultiplication calculates the product of a
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// CsrSparseMatrix and a vector.
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void csrSparseMatrixVectorMultiplication(CsrSparseMatrix sparseMatrix,
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double *vector, double **product, int vectorSize);
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// destroyCsrSparseMatrix frees all space used by the CsrSparseMatrix.
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void destroyCsrSparseMatrix(CsrSparseMatrix *sparseMatrix);
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// printCsrSparseMatrix prints the values of a CsrSparseMatrix.
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void printCsrSparseMatrix(CsrSparseMatrix sparseMatrix);
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#endif // CSR_SPARSE_MATRIX_H
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