text: 'use strict';
  var Random = require('uupaa.random.js');
  
  var r = new Random(1);
  
  module.exports = function(iters, cb) {
     var sum = 0,
         n = iters;
  
     while(n--) {
        sum += r.next()/9007199254740992; //2^53
     }
  
     if(sum < 0 || sum > iters) {
        return cb(new Error('bad sum'));
     }
  
     return cb(null);
  };
  