diff --git a/matrix.c b/matrix.c
new file mode 100644
index 0000000..9d0c2e9
--- /dev/null
+++ b/matrix.c
@@ -0,0 +1,151 @@
+#include <stdlib.h>
+#include <string.h>
+#include "matrix.h"
+
+// TODO Matrix-Funktionen implementieren
+
+Matrix createMatrix(unsigned int rows, unsigned int cols)
+{
+    Matrix m;
+
+    if (rows == 0 || cols == 0)
+    {
+        m.rows = 0;
+        m.cols = 0;
+        m.buffer = NULL;
+        return m;
+    }
+
+    m.rows = rows;
+    m.cols = cols;
+    m.buffer = (MatrixType *)calloc(rows * cols, sizeof(MatrixType));
+
+    return m;
+}
+
+void clearMatrix(Matrix *matrix)
+{
+    if (matrix != NULL)
+    {
+        if (matrix->buffer != NULL)
+        {
+            free(matrix->buffer);
+            matrix->buffer = NULL;
+        }
+
+        matrix->rows = 0;
+        matrix->cols = 0;
+    }
+}
+
+void setMatrixAt(MatrixType value, Matrix matrix, unsigned int rowIdx, unsigned int colIdx)
+{
+    if (matrix.buffer != NULL)
+    {
+        if (rowIdx < matrix.rows && colIdx < matrix.cols)
+        {
+            matrix.buffer[rowIdx * matrix.cols + colIdx] = value;
+        }
+    }
+}
+
+MatrixType getMatrixAt(const Matrix matrix, unsigned int rowIdx, unsigned int colIdx)
+{
+    if (matrix.buffer == NULL || rowIdx >= matrix.rows || colIdx >= matrix.cols)
+    {
+        return UNDEFINED_MATRIX_VALUE;
+    }
+
+    return matrix.buffer[rowIdx * matrix.cols + colIdx];
+}
+
+Matrix add(const Matrix matrix1, const Matrix matrix2)
+{
+    Matrix result;
+
+    if (matrix1.buffer == NULL || matrix2.buffer == NULL || matrix1.rows != matrix2.rows)
+    {
+        result.rows = 0;
+        result.cols = 0;
+        result.buffer = NULL;
+        return result;
+    }
+
+    if (matrix1.cols == matrix2.cols)
+    {
+        result = createMatrix(matrix1.rows, matrix1.cols);
+        for (int i = 0; i < matrix1.rows; i++)
+        {
+            for (int j = 0; j < matrix1.cols; j++)
+            {
+                MatrixType value = getMatrixAt(matrix1, i, j) + getMatrixAt(matrix2, i, j);
+                setMatrixAt(value, result, i, j);
+            }
+        }
+        return result;
+    }
+
+    if (matrix1.cols == 1 && matrix2.cols > 1)
+    {
+        result = createMatrix(matrix1.rows, matrix2.cols);
+        for (int i = 0; i < matrix1.rows; i++)
+        {
+            for (int j = 0; j < matrix2.cols; j++)
+            {
+                MatrixType value = getMatrixAt(matrix1, i, 0) + getMatrixAt(matrix2, i, j);
+                setMatrixAt(value, result, i, j);
+            }
+        }
+        return result;
+    }
+    else if (matrix2.cols == 1 && matrix1.cols > 1)
+    {
+        result = createMatrix(matrix1.rows, matrix1.cols);
+        for (int i = 0; i < matrix1.rows; i++)
+        {
+            for (int j = 0; j < matrix1.cols; j++)
+            {
+                MatrixType value = getMatrixAt(matrix1, i, j) + getMatrixAt(matrix2, i, 0);
+                setMatrixAt(value, result, i, j);
+            }
+        }
+        return result;
+    }
+
+    //Fall: Unterschiedliche Spaltenanzahl, beide ungleich 1
+    result.rows = 0;
+    result.cols = 0;
+    result.buffer = NULL;
+    return result;
+}
+
+Matrix multiply(const Matrix matrix1, const Matrix matrix2)
+{
+    Matrix result;
+
+    if (matrix1.buffer == NULL || matrix2.buffer == NULL || matrix1.cols != matrix2.rows)
+    {
+        result.rows = 0;
+        result.cols = 0;
+        result.buffer = NULL;
+        return result;
+    }
+
+    result = createMatrix(matrix1.rows, matrix2.cols);
+
+    for (int i = 0; i < matrix1.rows; i++)
+    {
+        for (int j = 0; j < matrix2.cols; j++)
+        {
+            MatrixType sum = 0;
+
+            for (int k = 0; k < matrix1.cols; k++)
+            {
+                sum += getMatrixAt(matrix1, i, k) * getMatrixAt(matrix2, k, j);
+            }
+            setMatrixAt(sum, result, i, j);
+        }
+    }
+
+    return result;
+}