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1 // Copyright (c) 2008 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2008 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 #include "base/rand_util.h" | 5 #include "base/rand_util.h" |
6 | 6 |
7 #include <stdlib.h> | 7 #include <stdlib.h> |
8 | 8 |
9 #include "base/basictypes.h" | 9 #include "base/basictypes.h" |
10 #include "base/logging.h" | 10 #include "base/logging.h" |
11 | 11 |
12 namespace { | 12 namespace { |
13 | 13 |
14 uint32 RandUInt32() { | 14 uint32 RandUint32() { |
15 uint32 number; | 15 uint32 number; |
16 CHECK(rand_s(&number) == 0); | 16 CHECK(rand_s(&number) == 0); |
17 return number; | 17 return number; |
18 } | 18 } |
19 | 19 |
20 } // namespace | 20 } // namespace |
21 | 21 |
22 namespace base { | 22 namespace base { |
23 | 23 |
24 uint64 RandUInt64() { | 24 uint64 RandUint64() { |
25 uint32 first_half = RandUInt32(); | 25 uint32 first_half = RandUint32(); |
26 uint32 second_half = RandUInt32(); | 26 uint32 second_half = RandUint32(); |
27 return (static_cast<uint64>(first_half) << 32) + second_half; | 27 return (static_cast<uint64>(first_half) << 32) + second_half; |
28 } | 28 } |
29 | 29 |
30 } // namespace base | 30 } // namespace base |
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