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1 // Copyright (c) 2008 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2010 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef BASE_RAND_UTIL_H_ | 5 #ifndef BASE_RAND_UTIL_H_ |
6 #define BASE_RAND_UTIL_H_ | 6 #define BASE_RAND_UTIL_H_ |
7 #pragma once | 7 #pragma once |
8 | 8 |
9 #include "base/basictypes.h" | 9 #include "base/basictypes.h" |
10 | 10 |
11 namespace base { | 11 namespace base { |
12 | 12 |
13 // Returns a random number in range [0, kuint64max]. Thread-safe. | 13 // Returns a random number in range [0, kuint64max]. Thread-safe. |
14 uint64 RandUint64(); | 14 uint64 RandUint64(); |
15 | 15 |
16 // Returns a random number between min and max (inclusive). Thread-safe. | 16 // Returns a random number between min and max (inclusive). Thread-safe. |
17 int RandInt(int min, int max); | 17 int RandInt(int min, int max); |
18 | 18 |
19 // Returns a random number in range [0, max). Thread-safe. | |
20 // | |
21 // Note that this can be used as an adapter for std::random_shuffle(): | |
22 // Given a pre-populated |std::vector<int> myvector|, shuffle it as | |
23 // std::random_shuffle(myvector.begin(), myvector.end(), base::RandGenerator); | |
24 uint64 RandGenerator(uint64 max); | |
Paweł Hajdan Jr.
2010/08/30 18:09:02
I think I'd prefer a RandomShuffle thing. The impl
| |
25 | |
19 // Returns a random double in range [0, 1). Thread-safe. | 26 // Returns a random double in range [0, 1). Thread-safe. |
20 double RandDouble(); | 27 double RandDouble(); |
21 | 28 |
22 } // namespace base | 29 } // namespace base |
23 | 30 |
24 #endif // BASE_RAND_UTIL_H_ | 31 #endif // BASE_RAND_UTIL_H_ |
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