src/Formatter/AbstractFormatter.php
protected function normalizePrecision($precision)
    {
        $precisionFiltered = filter_var($precision, FILTER_SANITIZE_NUMBER_INT);

        return (int) min(10, max(0, $precisionFiltered));
    }
protected function normalizePrecision($precision)
    {
        $precisionFiltered = filter_var($precision, FILTER_SANITIZE_NUMBER_INT);

        return (int) min(10, max(0, $precisionFiltered));
    }
Normalize precision value

The resulting value is an integer value between 0 and 10.

@uses \filter_var()

@param  integer $precision The precision value.
@return integer Returns the normalized value.