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| 1 // Copyright (c) 2013 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 #ifndef NET_QUIC_CONGESTION_CONTROL_CUBE_ROOT_H_ | |
| 6 #define NET_QUIC_CONGESTION_CONTROL_CUBE_ROOT_H_ | |
| 7 | |
| 8 #include "base/basictypes.h" | |
| 9 #include "net/base/net_export.h" | |
| 10 | |
| 11 namespace net { | |
| 12 | |
| 13 class NET_EXPORT_PRIVATE CubeRoot { | |
| 14 public: | |
| 15 // Calculates the cube root using a table lookup followed by one Newton- | |
| 16 // Raphson iteration. | |
| 17 static uint32 Root(uint64 a); | |
| 18 | |
| 19 private: | |
| 20 DISALLOW_COPY_AND_ASSIGN(CubeRoot); | |
| 21 }; | |
| 22 | |
| 23 } // namespace net | |
| 24 #endif // NET_QUIC_CONGESTION_CONTROL_CUBE_ROOT_H_ | |
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