}
if ($numValidChars > 0) {
$value = substr($value, 0, $numValidChars);
return floatval(base_convert($value, $radix, 10));
}
return NAN;
}, 'parseFloat' => function ($value) {
$value = to_string($value);
$value = preg_replace('/^[\\t\\x0B\\f \\xA0\\r\\n]+/', '', $value);
$sign = $value[0] === '-' ? -1 : 1;
$value = preg_replace('/^[+-]/', '', $value);
if (preg_match('/^(\\d+\\.\\d*|\\.\\d+|\\d+)e([+-]?[0-9]+)/i', $value, $m)) {
return (double) ($sign * $m[1] * pow(10, $m[2]));
}
if (preg_match('/^(\\d+\\.\\d*|\\.\\d+|\\d+)/i', $value, $m)) {
return (double) ($m[0] * $sign);
}
return NAN;
}, 'isNaN' => function ($value) {
return is_nan(to_number($value));
});
Number::$protoMethods = array('valueOf' => function () {
$self = Func::getContext();
return $self->value;
}, 'toString' => function ($radix = null) {
$self = Func::getContext();
//todo: radix
return to_string($self->value);
});
Number::$protoObject = new Object();
Number::$protoObject->setMethods(Number::$protoMethods, true, false, true);