Refactor and improve code for pow.

runtime/lib/typed_data.dart

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 // patch classes for Int8List ..... Float64List and ByteData implementations.
 
 import "dart:_internal";
 import 'dart:math' show Random;
 
 patch class Int8List {
@@ skipping 2311 matching lines @@
   Int32x4 _cmpnequal(Float32x4 other)
       native "Float32x4_cmpnequal";
   Float32x4 scale(double s) {
     return _scale(s);
   }
   Float32x4 _scale(double s) native "Float32x4_scale";
   Float32x4 abs() {
     return _abs();
   }
   Float32x4 _abs() native "Float32x4_abs";
-  Float32x4 clamp(Float32x4 lowerLimit,
-                         Float32x4 upperLimit) {
+  Float32x4 clamp(Float32x4 lowerLimit, Float32x4 upperLimit) {
     return _clamp(lowerLimit, upperLimit);
   }
-  Float32x4 _clamp(Float32x4 lowerLimit,
-                          Float32x4 upperLimit)
+  Float32x4 _clamp(Float32x4 lowerLimit, Float32x4 upperLimit)
       native "Float32x4_clamp";
   double get x native "Float32x4_getX";
   double get y native "Float32x4_getY";
   double get z native "Float32x4_getZ";
   double get w native "Float32x4_getW";
   int get signMask native "Float32x4_getSignMask";
 
   Float32x4 shuffle(int mask) native "Float32x4_shuffle";
   Float32x4 shuffleMix(Float32x4 zw, int mask) native "Float32x4_shuffleMix";
 
@@ skipping 1286 matching lines @@
     return value;
   }
   return object;
 }
 
 
 void _throwRangeError(int index, int length) {
   String message = "$index must be in the range [0..$length)";
   throw new RangeError(message);
 }