text: /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
  /* ***** BEGIN LICENSE BLOCK *****
   * Version: MPL 1.1/GPL 2.0/LGPL 2.1
   *
   * The contents of this file are subject to the Mozilla Public License Version
   * 1.1 (the "License"); you may not use this file except in compliance with
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   * License.
   *
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   *
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  /**
     File Name:          15.8.2.2.js
     ECMA Section:       15.8.2.2 acos( x )
     Description:        return an approximation to the arc cosine of the
     argument.  the result is expressed in radians and
     range is from +0 to +PI.  special cases:
     - if x is NaN, return NaN
     - if x > 1, the result is NaN
     - if x < -1, the result is NaN
     - if x == 1, the result is +0
     Author:             christine@netscape.com
     Date:               7 july 1997
  */
  var SECTION = "15.8.2.2";
  var VERSION = "ECMA_1";
  startTest();
  var TITLE   = "Math.acos()";
  
  writeHeaderToLog( SECTION + " "+ TITLE);
  
  new TestCase( SECTION,
  	      "Math.acos.length",
  	      1,
  	      Math.acos.length );
  
  new TestCase( SECTION,
  	      "Math.acos(void 0)",
  	      Number.NaN,
  	      Math.acos(void 0) );
  
  new TestCase( SECTION,
  	      "Math.acos()",
  	      Number.NaN,
  	      Math.acos() );
  
  new TestCase( SECTION,
  	      "Math.acos(null)",
  	      Math.PI/2,
  	      Math.acos(null) );
  
  new TestCase( SECTION,
  	      "Math.acos(NaN)",
  	      Number.NaN,
  	      Math.acos(Number.NaN) );
  
  new TestCase( SECTION,
  	      "Math.acos(a string)",
  	      Number.NaN,
  	      Math.acos("a string") );
  
  new TestCase( SECTION,
  	      "Math.acos('0')",
  	      Math.PI/2,
  	      Math.acos('0') );
  
  new TestCase( SECTION,
  	      "Math.acos('1')",
  	      0,
  	      Math.acos('1') );
  
  new TestCase( SECTION,
  	      "Math.acos('-1')",
  	      Math.PI,
  	      Math.acos('-1') );
  
  new TestCase( SECTION,
  	      "Math.acos(1.00000001)",
  	      Number.NaN,
  	      Math.acos(1.00000001) );
  
  new TestCase( SECTION,
  	      "Math.acos(11.00000001)",
  	      Number.NaN,
  	      Math.acos(-1.00000001) );
  
  new TestCase( SECTION,
  	      "Math.acos(1)",
  	      0,
  	      Math.acos(1)          );
  
  new TestCase( SECTION,
  	      "Math.acos(-1)",
  	      Math.PI,
  	      Math.acos(-1)         );
  
  new TestCase( SECTION,
  	      "Math.acos(0)",
  	      Math.PI/2,
  	      Math.acos(0)          );
  
  new TestCase( SECTION,
  	      "Math.acos(-0)",
  	      Math.PI/2,
  	      Math.acos(-0)         );
  
  new TestCase( SECTION,
  	      "Math.acos(Math.SQRT1_2)",
  	      Math.PI/4,
  	      Math.acos(Math.SQRT1_2));
  
  new TestCase( SECTION,
  	      "Math.acos(-Math.SQRT1_2)",
  	      Math.PI/4*3,
  	      Math.acos(-Math.SQRT1_2));
  
  new TestCase( SECTION,
  	      "Math.acos(0.9999619230642)",
  	      Math.PI/360,
  	      Math.acos(0.9999619230642));
  
  new TestCase( SECTION,
  	      "Math.acos(-3.0)",
  	      Number.NaN,
  	      Math.acos(-3.0));
  
  test();
  