59 lines
1.4 KiB
C
59 lines
1.4 KiB
C
#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include "matrix.h"
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// TODO Matrix-Funktionen implementieren
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Matrix createMatrix(unsigned int rows, unsigned int cols)
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{
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if (rows != 0 && cols != 0)
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{
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Matrix matrix;
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matrix.rows = rows;
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matrix.cols = cols;
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matrix.buffer = (float*) calloc(rows * cols, sizeof(float)); //belegt den speicherplatz mit calloc -> mit 0
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return matrix;
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}
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else
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{ //Bei einer "falschen" Matrix eine leere zurückgeben, ohne speicher zu belegen
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printf("Nullgroesse der Matrix!!!\n");
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Matrix matrix;
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matrix.rows = 0;
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matrix.cols = 0;
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matrix.buffer = NULL;
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return matrix;
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}
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}
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void clearMatrix(Matrix *matrix)
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{
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free(matrix->buffer); //gibt den heap speicher frei
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matrix->buffer = NULL; //zeiger auf NULL setzen
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matrix->rows = 0;
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matrix->cols = 0;
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}
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void setMatrixAt(MatrixType value, Matrix matrix, unsigned int rowIdx, unsigned int colIdx)
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{
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matrix.buffer[rowIdx * matrix.cols + colIdx] = value;
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}
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MatrixType getMatrixAt(const Matrix matrix, unsigned int rowIdx, unsigned int colIdx)
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{
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if(rowIdx < matrix.rows && colIdx < matrix.cols){
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return matrix.buffer[rowIdx * matrix.cols + colIdx];
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}else{
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return 0;
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}
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}
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Matrix add(const Matrix matrix1, const Matrix matrix2)
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{
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}
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Matrix multiply(const Matrix matrix1, const Matrix matrix2)
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{
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} |