public function setLowerBound($lowerBound)
    {
        if (is_float($lowerBound) === true) {
            $this->lowerBound = $lowerBound;
        } else {
            $msg = "The 'lowerBound' argument must be a float value, '" . gettype($lowerBound) . "' given.";
            throw new InvalidArgumentException($msg);
        }
    }
public function setLowerBound($lowerBound)
    {
        if (is_float($lowerBound) === true) {
            $this->lowerBound = $lowerBound;
        } else {
            $msg = "The 'lowerBound' argument must be a float value, '" . gettype($lowerBound) . "' given.";
            throw new InvalidArgumentException($msg);
        }
    }
public function setLowerBound ( $ lowerBound ) { if ( is_float ( $ lowerBound ) === true ) { $ this -> lowerBound = $ lowerBound ; } else { $ msg = "The 'lowerBound' argument must be a float value, '" . gettype ( $ lowerBound ) . "' given." ; throw new InvalidArgumentException ( $ msg ) ; } }
Get the value of the lowerBound attribute.

@param float $lowerBound A float value.
@throws \InvalidArgumentException If $lowerBound is not a float value.
Get the value of the lowerBound attribute .