generated from freudenreichan/info2Praktikum-NeuronalesNetz
matrix.c aktualisiert
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matrix.c
64
matrix.c
@ -4,32 +4,72 @@
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// TODO Matrix-Funktionen implementieren
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Matrix createMatrix(unsigned int rows, unsigned int cols)
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MatrixTyp erstelleMatrix(unsigned int reihen, unsigned int spalten)
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{
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MatrixTyp m;
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m.reihen = reihen;
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m.spalten = spalten;
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m.werte = (MatrixWert *)malloc(reihen * spalten * sizeof(MatrixWert));
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for (unsigned int i = 0; i < reihen * spalten; ++i) {
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m.werte[i] = UNDEFINIERTER_MATRIXWERT;
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}
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return m;
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}
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void clearMatrix(Matrix *matrix)
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void loescheMatrix(MatrixTyp *matrix)
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{
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free(matrix->werte);
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matrix->werte = NULL;
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matrix->reihen = 0;
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matrix->spalten = 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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void setzeMatrixWert(MatrixWert wert, MatrixTyp matrix, unsigned int reiheIndex, unsigned int spalteIndex)
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{
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if (reiheIndex < matrix.reihen && spalteIndex < matrix.spalten) {
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matrix.werte[reiheIndex * matrix.spalten + spalteIndex] = wert;
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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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MatrixWert holeMatrixWert(const MatrixTyp matrix, unsigned int reiheIndex, unsigned int spalteIndex)
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{
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if (reiheIndex < matrix.reihen && spalteIndex < matrix.spalten) {
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return matrix.werte[reiheIndex * matrix.spalten + spalteIndex];
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}
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return UNDEFINIERTER_MATRIXWERT;
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}
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Matrix add(const Matrix matrix1, const Matrix matrix2)
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MatrixTyp addiereMatrix(const MatrixTyp matrix1, const MatrixTyp matrix2)
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{
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if (matrix1.reihen != matrix2.reihen || matrix1.spalten != matrix2.spalten) {
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return erstelleMatrix(0, 0);
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}
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MatrixTyp ergebnis = erstelleMatrix(matrix1.reihen, matrix1.spalten);
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for (unsigned int i = 0; i < matrix1.reihen; ++i) {
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for (unsigned int j = 0; j < matrix1.spalten; ++j) {
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MatrixWert wert = holeMatrixWert(matrix1, i, j) + holeMatrixWert(matrix2, i, j);
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setzeMatrixWert(wert, ergebnis, i, j);
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}
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}
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return ergebnis;
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}
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Matrix multiply(const Matrix matrix1, const Matrix matrix2)
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MatrixTyp multipliziereMatrix(const MatrixTyp matrix1, const MatrixTyp matrix2)
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{
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if (matrix1.spalten != matrix2.reihen) {
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return erstelleMatrix(0, 0);
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}
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MatrixTyp ergebnis = erstelleMatrix(matrix1.reihen, matrix2.spalten);
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for (unsigned int i = 0; i < matrix1.reihen; ++i) {
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for (unsigned int j = 0; j < matrix2.spalten; ++j) {
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MatrixWert summe = 0;
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for (unsigned int k = 0; k < matrix1.spalten; ++k) {
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summe += holeMatrixWert(matrix1, i, k) * holeMatrixWert(matrix2, k, j);
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}
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setzeMatrixWert(summe, ergebnis, i, j);
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}
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}
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return ergebnis;
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}
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