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Matrix überarbeitet

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Björn 2025-11-17 13:31:48 +01:00
parent 8c98197327
commit e3349f7f68
1 changed files with 59 additions and 25 deletions
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84
matrix.c
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@ -4,69 +4,103 @@
// TODO Matrix-Funktionen implementieren
// Matrix erzeugen
Matrix createMatrix(unsigned int rows, unsigned int cols)
{
// Allocate memory for the matrix structure
Matrix matrix;
Matrix matrix;
matrix.rows = rows;
matrix.cols = cols;
if (rows == 0 || cols == 0) {
matrix.data = NULL;
return matrix;
}
matrix.data = (MatrixType *)malloc(rows * cols * sizeof(MatrixType));
if (matrix.data == NULL)
if (matrix.data == NULL)
{
// Handle memory allocation failure
matrix.rows = 0;
matrix.cols = 0;
}
return matrix;
}
// Matrix Speicher freigeben
void clearMatrix(Matrix *matrix)
{
// Free the allocated memory for the matrix data
if (matrix->data != NULL)
if (matrix->data != NULL)
{
free(matrix->data);
matrix->data = NULL;
matrix->rows = 0;
matrix->cols = 0;
}
matrix->rows = 0;
matrix->cols = 0;
}
// Wert setzen
void setMatrixAt(MatrixType value, Matrix matrix, unsigned int rowIdx, unsigned int colIdx)
{
// Set the value at the specified row and column index
if (rowIdx < matrix.rows && colIdx < matrix.cols)
if (rowIdx < matrix.rows && colIdx < matrix.cols)
{
matrix.data[rowIdx * matrix.cols + colIdx] = value;
matrix.data[rowIdx * matrix.cols + colIdx] = value;
}
}
// Wert auslesen
MatrixType getMatrixAt(const Matrix matrix, unsigned int rowIdx, unsigned int colIdx)
{
// Get the value at the specified row and column index
if (rowIdx < matrix.rows && colIdx < matrix.cols)
if (rowIdx < matrix.rows && colIdx < matrix.cols)
{
return matrix.data[rowIdx * matrix.cols + colIdx];
}
return 0; // Fallback
}
Matrix add(const Matrix matrix1, const Matrix matrix2)
// Matrizen addieren
Matrix add(const Matrix m1, const Matrix m2)
{
// Add two matrices and return the result
if (matrix1.rows != matrix2.rows || matrix1.cols != matrix2.cols)
if (m1.rows != m2.rows || m1.cols != m2.cols)
{
// Handle dimension mismatch
Matrix emptyMatrix = createMatrix(0, 0);
return emptyMatrix;
return createMatrix(0, 0); // Dimension passt nicht
}
Matrix result = createMatrix(m1.rows, m1.cols);
if (result.data == NULL) return result;
for (unsigned int r = 0; r < m1.rows; r++)
{
for (unsigned int c = 0; c < m1.cols; c++)
{
result.data[r * m1.cols + c] =
getMatrixAt(m1, r, c) + getMatrixAt(m2, r, c);
}
}
return result;
}
Matrix multiply(const Matrix matrix1, const Matrix matrix2)
// Matrizen multiplizieren
Matrix multiply(const Matrix m1, const Matrix m2)
{
// Multiply two matrices and return the result
if (matrix1.cols != matrix2.rows)
if (m1.cols != m2.rows)
{
// Handle dimension mismatch
Matrix emptyMatrix = createMatrix(0, 0);
return emptyMatrix;
return createMatrix(0, 0); // Falls Matrix-Dimensionen nicht passen
}
Matrix result = createMatrix(m1.rows, m2.cols);
if (result.data == NULL) return result;
for (unsigned int r = 0; r < m1.rows; r++)
{
for (unsigned int c = 0; c < m2.cols; c++)
{
MatrixType sum = 0;
for (unsigned int k = 0; k < m1.cols; k++)
{
sum += getMatrixAt(m1, r, k) * getMatrixAt(m2, k, c);
}
result.data[r * m2.cols + c] = sum;
}
}
return result;
}