fix #98

src/Form/Field/Currency.php

@@ -50,14 +50,6 @@ class Currency extends Text
         return $this->options(compact('digits'));
     }
 
-    /**
-     * {@inheritdoc}
-     */
-    protected function prepareInputValue($value)
-    {
-        return (float) $value;
-    }
-
     /**
      * {@inheritdoc}
      */