@@ -240,7 +240,7 @@ |
||
| 240 | 240 | * |
| 241 | 241 | * @param array $keyX |
| 242 | 242 | * @param integer $threshold |
| 243 | - * @return array |
|
| 243 | + * @return string |
|
| 244 | 244 | * @throws RuntimeException |
| 245 | 245 | */ |
| 246 | 246 | protected function reverseCoefficients(array $keyX, $threshold) |