code: function buildNumber() {
      extendSimilar(number, true, false, 'round,floor,ceil', function(methods, name) {
        methods[name] = function(precision) {
          return round(this, precision, name);
        }
      });
      extendSimilar(number, true, false, 'abs,pow,sin,asin,cos,acos,tan,atan,exp,pow,sqrt', function(methods, name) {
        methods[name] = function(a, b) {
          return math[name](this, a, b);
        }
      });
    }
docs: *
  @method round(<precision> = 0)
  @returns Number
  @short Shortcut for %Math.round% that also allows a <precision>.
  
  @example
  
  (3.241).round()  -> 3
  (-3.841).round() -> -4
  (3.241).round(2) -> 3.24
  (3748).round(-2) -> 3800
  
  **
  @method ceil(<precision> = 0)
  @returns Number
  @short Shortcut for %Math.ceil% that also allows a <precision>.
  
  @example
  
  (3.241).ceil()  -> 4
  (-3.241).ceil() -> -3
  (3.241).ceil(2) -> 3.25
  (3748).ceil(-2) -> 3800
  
  **
  @method floor(<precision> = 0)
  @returns Number
  @short Shortcut for %Math.floor% that also allows a <precision>.
  
  @example
  
  (3.241).floor()  -> 3
  (-3.841).floor() -> -4
  (3.241).floor(2) -> 3.24
  (3748).floor(-2) -> 3700
  
  **
  @method [math]()
  @returns Number
  @short Math related functions are mapped as shortcuts to numbers and are identical. Note that %Number#log% provides some special defaults.
  
  @set
  abs
  sin
  asin
  cos
  acos
  tan
  atan
  sqrt
  exp
  pow
  
  @example
  
  (3).pow(3) -> 27
  (-3).abs() -> 3
  (1024).sqrt() -> 32
  
  *