fixed previously missed bug

matrix.c

@@ -42,7 +42,7 @@ Matrix createMatrix(unsigned int rows, unsigned int cols)
 }
 */
 
-Matrix createMatrix(size_t cols, size_t rows)
+Matrix createMatrix(size_t rows, size_t cols)
 {
     Matrix m;
     m.rows = rows;
@@ -70,12 +70,11 @@ Matrix createMatrix(size_t cols, size_t rows)
     return m;
 }
 
-
 void clearMatrix(Matrix *matrix)
 {
     for (int i = 0; i < matrix->rows; i++) {
         for (int j = 0; j < matrix->cols;j++) {
-            matrix->buffer[i-1 + matrix->rows*(j-1)] = UNDEFINED_MATRIX_VALUE;
+            matrix->buffer[i + matrix->rows* j] = UNDEFINED_MATRIX_VALUE;
         }
     }
     free(matrix->buffer);