head 1.1; branch 1.1.1; access; symbols OSSP_JS_1_6_20070208:1.1.1.1 MOZILLA_JS_1_6_20070208:1.1.1.1 MOZILLA_JS_1_6_20070102:1.1.1.1 MOZILLA_JS_1_6_20060916:1.1.1.1 OSSP_JS_1_6_20060820:1.1.1.1 MOZILLA_JS_1_6_20060820:1.1.1.1 OSSP_JS_1_6_20060803:1.1.1.1 MOZILLA_JS_1_6_20060803:1.1.1.1 OSSP_JS_1_6_20060731:1.1.1.1 MOZILLA_JS_1_6_20060731:1.1.1.1 OSSP_JS_1_6_20060730:1.1.1.1 MOZILLA_JS_1_6_20060730:1.1.1.1 OSSP_JS_1_6_20060729:1.1.1.1 MOZILLA_JS_1_6_20060729:1.1.1.1 OSSP_JS_1_6_20060724:1.1.1.1 MOZILLA_JS_1_6_20060724:1.1.1.1 MOZILLA_JS_1_6_20060722:1.1.1.1 OSSP_JS_1_6_20060722:1.1.1.1 MOZILLA:1.1.1; locks; strict; comment @ * @; 1.1 date 2003.11.15.00.10.56; author rse; state Exp; branches 1.1.1.1; next ; commitid yL3y5cCdrhpJcQFr; 1.1.1.1 date 2003.11.15.00.10.56; author rse; state Exp; branches; next ; commitid yL3y5cCdrhpJcQFr; desc @@ 1.1 log @Initial revision @ text @/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ /* ***** BEGIN LICENSE BLOCK ***** * Version: MPL 1.1/GPL 2.0/LGPL 2.1 * * The contents of this file are subject to the Mozilla Public License Version * 1.1 (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * http://www.mozilla.org/MPL/ * * Software distributed under the License is distributed on an "AS IS" basis, * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License * for the specific language governing rights and limitations under the * License. * * The Original Code is Mozilla Communicator client code, released * March 31, 1998. * * The Initial Developer of the Original Code is * Netscape Communications Corporation. * Portions created by the Initial Developer are Copyright (C) 1998 * the Initial Developer. All Rights Reserved. * * Contributor(s): * * Alternatively, the contents of this file may be used under the terms of * either of the GNU General Public License Version 2 or later (the "GPL"), * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"), * in which case the provisions of the GPL or the LGPL are applicable instead * of those above. If you wish to allow use of your version of this file only * under the terms of either the GPL or the LGPL, and not to allow others to * use your version of this file under the terms of the MPL, indicate your * decision by deleting the provisions above and replace them with the notice * and other provisions required by the GPL or the LGPL. If you do not delete * the provisions above, a recipient may use your version of this file under * the terms of any one of the MPL, the GPL or the LGPL. * * ***** END LICENSE BLOCK ***** */ #ifndef jsbit_h___ #define jsbit_h___ #include "jstypes.h" JS_BEGIN_EXTERN_C /* ** A jsbitmap_t is a long integer that can be used for bitmaps */ typedef JSUword jsbitmap_t; /* NSPR name, a la Unix system types */ typedef jsbitmap_t jsbitmap; /* JS-style scalar typedef name */ #define JS_TEST_BIT(_map,_bit) \ ((_map)[(_bit)>>JS_BITS_PER_WORD_LOG2] & (1L << ((_bit) & (JS_BITS_PER_WORD-1)))) #define JS_SET_BIT(_map,_bit) \ ((_map)[(_bit)>>JS_BITS_PER_WORD_LOG2] |= (1L << ((_bit) & (JS_BITS_PER_WORD-1)))) #define JS_CLEAR_BIT(_map,_bit) \ ((_map)[(_bit)>>JS_BITS_PER_WORD_LOG2] &= ~(1L << ((_bit) & (JS_BITS_PER_WORD-1)))) /* ** Compute the log of the least power of 2 greater than or equal to n */ extern JS_PUBLIC_API(JSIntn) JS_CeilingLog2(JSUint32 i); /* ** Compute the log of the greatest power of 2 less than or equal to n */ extern JS_PUBLIC_API(JSIntn) JS_FloorLog2(JSUint32 i); /* ** Macro version of JS_CeilingLog2: Compute the log of the least power of ** 2 greater than or equal to _n. The result is returned in _log2. */ #define JS_CEILING_LOG2(_log2,_n) \ JS_BEGIN_MACRO \ JSUint32 j_ = (JSUint32)(_n); \ (_log2) = 0; \ if ((j_) & ((j_)-1)) \ (_log2) += 1; \ if ((j_) >> 16) \ (_log2) += 16, (j_) >>= 16; \ if ((j_) >> 8) \ (_log2) += 8, (j_) >>= 8; \ if ((j_) >> 4) \ (_log2) += 4, (j_) >>= 4; \ if ((j_) >> 2) \ (_log2) += 2, (j_) >>= 2; \ if ((j_) >> 1) \ (_log2) += 1; \ JS_END_MACRO /* ** Macro version of JS_FloorLog2: Compute the log of the greatest power of ** 2 less than or equal to _n. The result is returned in _log2. ** ** This is equivalent to finding the highest set bit in the word. */ #define JS_FLOOR_LOG2(_log2,_n) \ JS_BEGIN_MACRO \ JSUint32 j_ = (JSUint32)(_n); \ (_log2) = 0; \ if ((j_) >> 16) \ (_log2) += 16, (j_) >>= 16; \ if ((j_) >> 8) \ (_log2) += 8, (j_) >>= 8; \ if ((j_) >> 4) \ (_log2) += 4, (j_) >>= 4; \ if ((j_) >> 2) \ (_log2) += 2, (j_) >>= 2; \ if ((j_) >> 1) \ (_log2) += 1; \ JS_END_MACRO JS_END_EXTERN_C #endif /* jsbit_h___ */ @ 1.1.1.1 log @Import new upstream version: Mozilla JavaScript 1.6-1.5.0.5-20060722 @ text @@