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      1 // Copyright 2014 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #include "ui/ios/uikit_util.h"
      6 
      7 #import <UIKit/UIKit.h>
      8 
      9 #include <cmath>
     10 
     11 namespace ui {
     12 
     13 CGFloat AlignValueToUpperPixel(CGFloat value) {
     14   CGFloat scale = [[UIScreen mainScreen] scale];
     15   return std::ceil(value * scale) / scale;
     16 }
     17 
     18 CGSize AlignSizeToUpperPixel(CGSize size) {
     19   return CGSizeMake(AlignValueToUpperPixel(size.width),
     20                     AlignValueToUpperPixel(size.height));
     21 }
     22 
     23 } // namespace ui
     24