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1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ | 1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ |
2 /* ***** BEGIN LICENSE BLOCK ***** | 2 /* This Source Code Form is subject to the terms of the Mozilla Public |
3 * Version: MPL 1.1/GPL 2.0/LGPL 2.1 | 3 * License, v. 2.0. If a copy of the MPL was not distributed with this |
4 * | 4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
5 * The contents of this file are subject to the Mozilla Public License Version | |
6 * 1.1 (the "License"); you may not use this file except in compliance with | |
7 * the License. You may obtain a copy of the License at | |
8 * http://www.mozilla.org/MPL/ | |
9 * | |
10 * Software distributed under the License is distributed on an "AS IS" basis, | |
11 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License | |
12 * for the specific language governing rights and limitations under the | |
13 * License. | |
14 * | |
15 * The Original Code is the Netscape Portable Runtime (NSPR). | |
16 * | |
17 * The Initial Developer of the Original Code is | |
18 * Netscape Communications Corporation. | |
19 * Portions created by the Initial Developer are Copyright (C) 1998-2000 | |
20 * the Initial Developer. All Rights Reserved. | |
21 * | |
22 * Contributor(s): | |
23 * | |
24 * Alternatively, the contents of this file may be used under the terms of | |
25 * either the GNU General Public License Version 2 or later (the "GPL"), or | |
26 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"), | |
27 * in which case the provisions of the GPL or the LGPL are applicable instead | |
28 * of those above. If you wish to allow use of your version of this file only | |
29 * under the terms of either the GPL or the LGPL, and not to allow others to | |
30 * use your version of this file under the terms of the MPL, indicate your | |
31 * decision by deleting the provisions above and replace them with the notice | |
32 * and other provisions required by the GPL or the LGPL. If you do not delete | |
33 * the provisions above, a recipient may use your version of this file under | |
34 * the terms of any one of the MPL, the GPL or the LGPL. | |
35 * | |
36 * ***** END LICENSE BLOCK ***** */ | |
37 | 5 |
38 #ifndef prbit_h___ | 6 #ifndef prbit_h___ |
39 #define prbit_h___ | 7 #define prbit_h___ |
40 | 8 |
41 #include "prtypes.h" | 9 #include "prtypes.h" |
42 PR_BEGIN_EXTERN_C | 10 PR_BEGIN_EXTERN_C |
43 | 11 |
44 /* replace compare/jump/add/shift sequence with x86 BSF/BSR instruction */ | 12 /* replace compare/jump/add/shift sequence with x86 BSF/BSR instruction */ |
45 #if defined(_WIN32) && (_MSC_VER >= 1300) && (defined(_M_IX86) || defined(_M_AMD
64)) | 13 #if defined(_WIN32) && (_MSC_VER >= 1300) && (defined(_M_IX86) || defined(_M_AMD
64)) |
46 unsigned char _BitScanForward(unsigned long * Index, unsigned long Mask); | 14 unsigned char _BitScanForward(unsigned long * Index, unsigned long Mask); |
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170 #pragma intrinsic(_rotl, _rotr) | 138 #pragma intrinsic(_rotl, _rotr) |
171 #define PR_ROTATE_LEFT32(a, bits) _rotl(a, bits) | 139 #define PR_ROTATE_LEFT32(a, bits) _rotl(a, bits) |
172 #define PR_ROTATE_RIGHT32(a, bits) _rotr(a, bits) | 140 #define PR_ROTATE_RIGHT32(a, bits) _rotr(a, bits) |
173 #else | 141 #else |
174 #define PR_ROTATE_LEFT32(a, bits) (((a) << (bits)) | ((a) >> (32 - (bits)))) | 142 #define PR_ROTATE_LEFT32(a, bits) (((a) << (bits)) | ((a) >> (32 - (bits)))) |
175 #define PR_ROTATE_RIGHT32(a, bits) (((a) >> (bits)) | ((a) << (32 - (bits)))) | 143 #define PR_ROTATE_RIGHT32(a, bits) (((a) >> (bits)) | ((a) << (32 - (bits)))) |
176 #endif | 144 #endif |
177 | 145 |
178 PR_END_EXTERN_C | 146 PR_END_EXTERN_C |
179 #endif /* prbit_h___ */ | 147 #endif /* prbit_h___ */ |
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