1 =============================================================================== 2 3 /* 4 * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. 5 * 6 * Use of this source code is governed by a BSD-style license 7 * that can be found in the LICENSE file in the root of the source 8 * tree. An additional intellectual property rights grant can be found 9 * in the file PATENTS. All contributing project authors may 10 * be found in the AUTHORS file in the root of the source tree. 11 */ 12 13 =============================================================================== 14 15 /* 16 * Copyright (C) 2010 The Android Open Source Project 17 * 18 * Licensed under the Apache License, Version 2.0 (the "License"); 19 * you may not use this file except in compliance with the License. 20 * You may obtain a copy of the License at 21 * 22 * http://www.apache.org/licenses/LICENSE-2.0 23 * 24 * Unless required by applicable law or agreed to in writing, software 25 * distributed under the License is distributed on an "AS IS" BASIS, 26 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 27 * See the License for the specific language governing permissions and 28 * limitations under the License. 29 * 30 */ 31 32 =============================================================================== 33 34 /* 35 * http://www.kurims.kyoto-u.ac.jp/~ooura/fft.html 36 * Copyright Takuya OOURA, 1996-2001 37 * 38 * You may use, copy, modify and distribute this code for any purpose (include 39 * commercial use) and without fee. Please refer to this package when you modify 40 * this code. 41 * 42 * Changes by the WebRTC authors: 43 * - Trivial type modifications. 44 * - Minimal code subset to do rdft of length 128. 45 * - Optimizations because of known length. 46 * 47 * All changes are covered by the WebRTC license and IP grant: 48 * Use of this source code is governed by a BSD-style license 49 * that can be found in the LICENSE file in the root of the source 50 * tree. An additional intellectual property rights grant can be found 51 * in the file PATENTS. All contributing project authors may 52 * be found in the AUTHORS file in the root of the source tree. 53 */ 54 55 =============================================================================== 56 57 /* 58 * http://www.kurims.kyoto-u.ac.jp/~ooura/fft.html 59 * Copyright Takuya OOURA, 1996-2001 60 * 61 * You may use, copy, modify and distribute this code for any purpose (include 62 * commercial use) and without fee. Please refer to this package when you modify 63 * this code. 64 * 65 * Changes: 66 * Trivial type modifications by the WebRTC authors. 67 */ 68 69 =============================================================================== 70 71 /*Boost Software License - Version 1.0 - August 17th, 2003 72 73 Permission is hereby granted, free of charge, to any person or organization 74 obtaining a copy of the software and accompanying documentation covered by 75 this license (the "Software") to use, reproduce, display, distribute, 76 execute, and transmit the Software, and to prepare derivative works of the 77 Software, and to permit third-parties to whom the Software is furnished to 78 do so, all subject to the following: 79 80 The copyright notices in the Software and this entire statement, including 81 the above license grant, this restriction and the following disclaimer, 82 must be included in all copies of the Software, in whole or in part, and 83 all derivative works of the Software, unless such copies or derivative 84 works are solely in the form of machine-executable object code generated by 85 a source language processor. 86 87 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 88 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 89 FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT 90 SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE 91 FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE, 92 ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 93 DEALINGS IN THE SOFTWARE.*/ 94 95 =============================================================================== 96 97 // Copyright Steven J. Ross 2001 - 2009. 98 // Distributed under the Boost Software License, Version 1.0. 99 // (See accompanying file LICENSE_1_0.txt or copy at 100 // http://www.boost.org/LICENSE_1_0.txt) 101 102 // See http://www.boost.org/ for updates, documentation, and revision history. 103 104 /* 105 Some improvements suggested by: 106 Phil Endecott and Frank Gennari 107 Cygwin fix provided by: 108 Scott McMurray 109 */ 110 111 =============================================================================== 112 113 // Copyright (c) 2011 The Chromium Authors. All rights reserved. 114 // 115 // Redistribution and use in source and binary forms, with or without 116 // modification, are permitted provided that the following conditions are 117 // met: 118 // 119 // * Redistributions of source code must retain the above copyright 120 // notice, this list of conditions and the following disclaimer. 121 // * Redistributions in binary form must reproduce the above 122 // copyright notice, this list of conditions and the following disclaimer 123 // in the documentation and/or other materials provided with the 124 // distribution. 125 // * Neither the name of Google Inc. nor the names of its 126 // contributors may be used to endorse or promote products derived from 127 // this software without specific prior written permission. 128 // 129 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 130 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 131 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 132 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 133 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 134 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 135 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 136 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 137 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 138 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 139 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 140 141 =============================================================================== 142 143 // (C) Copyright Greg Colvin and Beman Dawes 1998, 1999. 144 // Copyright (c) 2001, 2002 Peter Dimov 145 // 146 // Permission to copy, use, modify, sell and distribute this software 147 // is granted provided this copyright notice appears in all copies. 148 // This software is provided "as is" without express or implied 149 // warranty, and with no claim as to its suitability for any purpose. 150 // 151 // See http://www.boost.org/libs/smart_ptr/scoped_ptr.htm for documentation. 152 // 153 154 // scoped_ptr mimics a built-in pointer except that it guarantees deletion 155 // of the object pointed to, either on destruction of the scoped_ptr or via 156 // an explicit reset(). scoped_ptr is a simple solution for simple needs; 157 // use shared_ptr or std::auto_ptr if your needs are more complex. 158 159 // scoped_ptr_malloc added in by Google. When one of 160 // these goes out of scope, instead of doing a delete or delete[], it 161 // calls free(). scoped_ptr_malloc<char> is likely to see much more 162 // use than any other specializations. 163 164 // release() added in by Google. Use this to conditionally 165 // transfer ownership of a heap-allocated object to the caller, usually on 166 // method success. 167 168 169 =============================================================================== 170 /* 171 * Written by Wilco Dijkstra, 1996. 172 * Refer to NOTICE file at the root of git project. 173 * 174 * Minor modifications in code style for WebRTC, 2012. 175 */ 176 177 // The following email record is related to source files spl_sqrt_floor.c 178 // and spl_sqrt_floor.s in trunk/src/common_audio/signal_processing/. 179 // 180 // 181 // From: Wilco Dijkstra <Wilco.Dijkstra (a] ntlworld.com> 182 // Date: Fri, Jun 24, 2011 at 3:20 AM 183 // Subject: Re: sqrt routine 184 // To: Kevin Ma <kma (a] google.com> 185 // Hi Kevin, 186 // Thanks for asking. Those routines are public domain (originally posted to 187 // comp.sys.arm a long time ago), so you can use them freely for any purpose. 188 // Cheers, 189 // Wilco 190 // 191 // ----- Original Message ----- 192 // From: "Kevin Ma" <kma (a] google.com> 193 // To: <Wilco.Dijkstra (a] ntlworld.com> 194 // Sent: Thursday, June 23, 2011 11:44 PM 195 // Subject: Fwd: sqrt routine 196 // Hi Wilco, 197 // I saw your sqrt routine from several web sites, including 198 // http://www.finesse.demon.co.uk/steven/sqrt.html. 199 // Just wonder if there's any copyright information with your Successive 200 // approximation routines, or if I can freely use it for any purpose. 201 // Thanks. 202 // Kevin 203
