michael@0: /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: //-----------------------------------------------------------------------------
michael@0: var BUGNUMBER     = "(none)";
michael@0: var summary = "A (slow) generator of pi";
michael@0: var actual, expect;
michael@0: 
michael@0: printBugNumber(BUGNUMBER);
michael@0: printStatus(summary);
michael@0: 
michael@0: /**************
michael@0:  * BEGIN TEST *
michael@0:  **************/
michael@0: 
michael@0: function pi()
michael@0: {
michael@0:   var val = 0;
michael@0:   var curr = 1;
michael@0:   var isNeg = false;
michael@0:   while (true)
michael@0:   {
michael@0:     if (isNeg)
michael@0:       yield val -= 4/curr;
michael@0:     else
michael@0:       yield val += 4/curr;
michael@0:     curr += 2;
michael@0:     isNeg = !isNeg;
michael@0:   }
michael@0: }
michael@0: 
michael@0: var failed = false;
michael@0: var it = pi();
michael@0: 
michael@0: var vals =
michael@0:   [4,
michael@0:    4 - 4/3,
michael@0:    4 - 4/3 + 4/5,
michael@0:    4 - 4/3 + 4/5 - 4/7];
michael@0: 
michael@0: try
michael@0: {
michael@0:   for (var i = 0, sz = vals.length; i < sz; i++)
michael@0:     if (it.next() != vals[i])
michael@0:       throw vals[i];
michael@0: }
michael@0: catch (e)
michael@0: {
michael@0:   failed = e;
michael@0: }
michael@0: 
michael@0: 
michael@0: 
michael@0: expect = false;
michael@0: actual = failed;
michael@0: 
michael@0: reportCompare(expect, actual, summary);