webrtc/rtc_base/random.cc - Issue 2877023002: Move webrtc/{base => rtc_base}

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Side by Side Diff: webrtc/rtc_base/random.cc

Issue 2877023002: Move webrtc/{base => rtc_base} (Closed)

Patch Set: update presubmit.py and DEPS include rules Created 3 years, 5 months ago

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1 /*	1 /*

2 * Copyright (c) 2015 The WebRTC project authors. All Rights Reserved.	2 * Copyright (c) 2015 The WebRTC project authors. All Rights Reserved.

3 *	3 *

4 * Use of this source code is governed by a BSD-style license	4 * Use of this source code is governed by a BSD-style license

5 * that can be found in the LICENSE file in the root of the source	5 * that can be found in the LICENSE file in the root of the source

6 * tree. An additional intellectual property rights grant can be found	6 * tree. An additional intellectual property rights grant can be found

7 * in the file PATENTS. All contributing project authors may	7 * in the file PATENTS. All contributing project authors may

8 * be found in the AUTHORS file in the root of the source tree.	8 * be found in the AUTHORS file in the root of the source tree.

9 */	9 */

10 #include "webrtc/base/random.h"	10 #include "webrtc/base/random.h"

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77 double u2 = static_cast<double>(NextOutput()) / 0xFFFFFFFFFFFFFFFFull;	77 double u2 = static_cast<double>(NextOutput()) / 0xFFFFFFFFFFFFFFFFull;

78 return mean + standard_deviation * sqrt(-2 * log(u1)) * cos(2 * kPi * u2);	78 return mean + standard_deviation * sqrt(-2 * log(u1)) * cos(2 * kPi * u2);

79 }	79 }

80	80

81 double Random::Exponential(double lambda) {	81 double Random::Exponential(double lambda) {

82 double uniform = Rand<double>();	82 double uniform = Rand<double>();

83 return -log(uniform) / lambda;	83 return -log(uniform) / lambda;

84 }	84 }

85	85

86 } // namespace webrtc	86 } // namespace webrtc

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