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1 /* | 1 /* |
2 * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. | 2 * Copyright (c) 2011 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 | 10 |
11 | 11 |
12 /* | 12 /* |
13 * This file contains the function WebRtcSpl_Sqrt(). | 13 * This file contains the function WebRtcSpl_Sqrt(). |
14 * The description header can be found in signal_processing_library.h | 14 * The description header can be found in signal_processing_library.h |
15 * | 15 * |
16 */ | 16 */ |
17 | 17 |
18 #include "webrtc/base/checks.h" | 18 #include "webrtc/rtc_base/checks.h" |
19 #include "webrtc/common_audio/signal_processing/include/signal_processing_librar
y.h" | 19 #include "webrtc/common_audio/signal_processing/include/signal_processing_librar
y.h" |
20 | 20 |
21 int32_t WebRtcSpl_SqrtLocal(int32_t in); | 21 int32_t WebRtcSpl_SqrtLocal(int32_t in); |
22 | 22 |
23 int32_t WebRtcSpl_SqrtLocal(int32_t in) | 23 int32_t WebRtcSpl_SqrtLocal(int32_t in) |
24 { | 24 { |
25 | 25 |
26 int16_t x_half, t16; | 26 int16_t x_half, t16; |
27 int32_t A, B, x2; | 27 int32_t A, B, x2; |
28 | 28 |
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185 } else | 185 } else |
186 { | 186 { |
187 A >>= 16; // A = A>>16 | 187 A >>= 16; // A = A>>16 |
188 } | 188 } |
189 | 189 |
190 A = A & ((int32_t)0x0000ffff); | 190 A = A & ((int32_t)0x0000ffff); |
191 A >>= nshift; // De-normalize the result. | 191 A >>= nshift; // De-normalize the result. |
192 | 192 |
193 return A; | 193 return A; |
194 } | 194 } |
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