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78579ded18
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36
matrix.c
36
matrix.c
@ -1,5 +1,6 @@
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#include <stdlib.h>
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#include <stdlib.h>
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#include <string.h>
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#include <string.h>
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#include <stdio.h>
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#include "matrix.h"
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#include "matrix.h"
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// TODO Matrix-Funktionen implementieren
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// TODO Matrix-Funktionen implementieren
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@ -7,6 +8,13 @@
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Matrix createMatrix(unsigned int rows, unsigned int cols)
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Matrix createMatrix(unsigned int rows, unsigned int cols)
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{
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{
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Matrix matrix;
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Matrix matrix;
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Matrix empty = {0, 0, NULL};
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if(rows == 0 || cols == 0)
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{
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//print("Fehler: Dimensionen muessen >= 1 sein!");
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return empty;
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}
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matrix.rows = rows;
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matrix.rows = rows;
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matrix.cols = cols;
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matrix.cols = cols;
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@ -14,7 +22,7 @@ Matrix createMatrix(unsigned int rows, unsigned int cols)
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if(matrix.buffer == NULL)
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if(matrix.buffer == NULL)
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{
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{
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printf("Fehler bei der Speicherreservierung! Keine Matrix erstellt!");
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//printf("Fehler bei der Speicherreservierung! Keine Matrix erstellt!");
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matrix.rows = 0;
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matrix.rows = 0;
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matrix.cols = 0;
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matrix.cols = 0;
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}
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}
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@ -24,41 +32,41 @@ Matrix createMatrix(unsigned int rows, unsigned int cols)
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void clearMatrix(Matrix *matrix)
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void clearMatrix(Matrix *matrix)
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{
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{
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free(matrix.buffer);
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free(matrix->buffer);
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matrix->buffer = NULL;
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matrix->buffer = NULL;
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matrix->rows = 0;
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matrix->rows = 0;
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matrix->cols = 0;
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matrix->cols = 0;
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}
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}
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void setMatrixAt(MatrixType value, Matrix *matrix, unsigned int rowIdx, unsigned int colIdx)
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void setMatrixAt(MatrixType value, Matrix matrix, unsigned int rowIdx, unsigned int colIdx)
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{
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{
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if(matrix->buffer == NULL)
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if(matrix.buffer == NULL)
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{
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{
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printf("Fehler beim Setzen! Matrix nicht initialisiert");
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//printf("Fehler beim Setzen! Matrix nicht initialisiert");
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return;
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return;
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}
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}
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if(rowIdx >= matrix->rows || colIdx >= matrix->cols)
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if(rowIdx >= matrix.rows || colIdx >= matrix.cols)
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{
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{
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printf("Ungueltige Indizes beim Setzen!\n");
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//printf("Ungueltige Indizes beim Setzen!\n");
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return;
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return;
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}
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}
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matrix->buffer[rowIdx * matrix->cols + colIdx] = value;
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matrix.buffer[rowIdx * matrix.cols + colIdx] = value;
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}
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}
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MatrixType getMatrixAt(const Matrix matrix, unsigned int rowIdx, unsigned int colIdx)
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MatrixType getMatrixAt(const Matrix matrix, unsigned int rowIdx, unsigned int colIdx)
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{
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{
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if(matrix.buffer == NULL)
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if(matrix.buffer == NULL)
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{
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{
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printf("Fehler beim Lesen! Matrix nicht initialisiert");
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//printf("Fehler beim Lesen! Matrix nicht initialisiert");
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return 0;
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return 0;
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}
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}
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if(rowIdx >= matrix.rows || colIdx >= matrix.cols)
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if(rowIdx >= matrix.rows || colIdx >= matrix.cols)
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{
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{
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printf("Ungueltige Indizes beim Lesen!\n");
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//printf("Ungueltige Indizes beim Lesen!\n");
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return 0;
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return 0;
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}
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}
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@ -69,7 +77,7 @@ Matrix add(const Matrix matrix1, const Matrix matrix2)
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{
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{
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if((matrix1.rows != matrix2.rows) || (matrix1.cols != matrix2.cols))
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if((matrix1.rows != matrix2.rows) || (matrix1.cols != matrix2.cols))
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{
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{
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printf("Fehler bei Addition: Matrix Dimensionen passen nicht ueberein!\n");
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//printf("Fehler bei Addition: Matrix Dimensionen passen nicht ueberein!\n");
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Matrix empty = {0, 0, NULL};
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Matrix empty = {0, 0, NULL};
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return empty;
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return empty;
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}
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}
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@ -88,7 +96,7 @@ Matrix add(const Matrix matrix1, const Matrix matrix2)
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matrix2Wert = getMatrixAt(matrix2, row, col);
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matrix2Wert = getMatrixAt(matrix2, row, col);
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summe = matrix1Wert + matrix2Wert;
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summe = matrix1Wert + matrix2Wert;
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setMatrixAt(summe, &ergebnisMatrix, row, col);
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setMatrixAt(summe, ergebnisMatrix, row, col);
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}
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}
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}
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}
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@ -99,7 +107,7 @@ Matrix multiply(const Matrix matrix1, const Matrix matrix2)
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{
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{
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if(matrix1.cols != matrix2.rows)
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if(matrix1.cols != matrix2.rows)
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{
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{
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printf("Fehler bei Multiplikation: Matrix Dimensionen passen nicht ueberein!\n");
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//printf("Fehler bei Multiplikation: Matrix Dimensionen passen nicht ueberein!\n");
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Matrix empty = {0, 0, NULL};
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Matrix empty = {0, 0, NULL};
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return empty;
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return empty;
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}
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}
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@ -119,7 +127,7 @@ Matrix multiply(const Matrix matrix1, const Matrix matrix2)
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erg += getMatrixAt(matrix1, row, k) * getMatrixAt(matrix2, k, col);
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erg += getMatrixAt(matrix1, row, k) * getMatrixAt(matrix2, k, col);
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}
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}
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setMatrixAt(erg, &ergebnisMatrix, row, col);
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setMatrixAt(erg, ergebnisMatrix, row, col);
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}
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}
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}
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}
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@ -164,7 +164,7 @@ void test_setMatrixAtFailsOnIndicesOutOfRange(void)
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Matrix matrixToTest = {.rows=2, .cols=3, .buffer=buffer};
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Matrix matrixToTest = {.rows=2, .cols=3, .buffer=buffer};
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setMatrixAt(-1, matrixToTest, 2, 3);
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setMatrixAt(-1, matrixToTest, 2, 3);
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TEST_ASSERT_EQUAL_FLOAT_ARRAY(expectedResults, matrixToTest.buffer, matrixToTest.cols * matrixToTest.rows);
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TEST_ASSERT_EQUAL_FLOAT_ARRAY(expectedResults, matrixToTest.buffer, sizeof(buffer)/sizeof(MatrixType));
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}
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}
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void setUp(void) {
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void setUp(void) {
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