text: // Copyright 2009 the Sputnik authors.  All rights reserved.
  // This code is governed by the BSD license found in the LICENSE file.
  
  /**
   * If x is NaN, Math.acos(x) is NaN
   *
   * @path ch15/15.8/15.8.2/15.8.2.2/S15.8.2.2_A1.js
   * @description Checking if Math.acos(NaN) is NaN
   */
  
  // CHECK#1
  var x = NaN;
  if (!isNaN(Math.acos(x)))
  {
  	$ERROR("#1: 'var x=NaN; isNaN(Math.acos(x)) === false'");
  }
  
  