yet Another Coudhdb reduce

couchdb_reduce.js

function (key, values, rereduce) {
    if (rereduce) {
      var results = {
      'sum': values.reduce(function(a, b) { return a + b.sum }, 0),
      'min': values.reduce(function(a, b) { return Math.min(a, b.min) }, Infinity),
      'max': values.reduce(function(a, b) { return Math.max(a, b.max) }, -Infinity),
      'count': values.reduce(function(a, b) { return a + b.count }, 0),
      'sumsqr': values.reduce(function(a, b) { return a + b.sumsqr }, 0)
       };
        for(var i = 0; i < values.length; i++) {
            for(var name in values[i]) {
                if (results[name]) results[name] += values[i][name];
                else results[name] = values[i][name];
            }
        }
        return results;
    } else {
    var results = {
      'sum': sum(values),
      'min': Math.min.apply(null, values),
      'max': Math.max.apply(null, values),
      'count': values.length,
      'sumsqr': (function() {
        var sumsqr = 0;
        values.forEach(function (value) {
          sumsqr += value * value;
        });

        return sumsqr;
      })(),
    }; 
    for(var i = 0; i < values.length; i++) {
        var name = values[i];
        if (name >="1" && name <="5") { 
        if (results[name]) results[name]++;
        else results[name] = 1;
        }
    }
    return results;
    }
}