JSTests/test262/test/built-ins/isNaN/S15.1.2.4_A2.6.js - WebKit - Git at Google

 // Copyright 2009 the Sputnik authors.  All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.

 /*---
 info: The isNaN property has not prototype property
 esid: sec-isnan-number
 description: Checking isNaN.prototype
 ---*/
 assert.sameValue(isNaN.prototype, undefined, 'The value of isNaN.prototype is expected to equal undefined');
	// Copyright 2009 the Sputnik authors. All rights reserved.
	// This code is governed by the BSD license found in the LICENSE file.

	/*---
	info: The isNaN property has not prototype property
	esid: sec-isnan-number
	description: Checking isNaN.prototype
	---*/
	assert.sameValue(isNaN.prototype, undefined, 'The value of isNaN.prototype is expected to equal undefined');