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001 /* Copyright (C) 2004 The KOS Team 001 /* Copyright (C) 2004 The KOS Team 002 002 003 This program is free software; you can redi 003 This program is free software; you can redistribute it and/or 004 modify it under the terms of the GNU Genera 004 modify it under the terms of the GNU General Public License 005 as published by the Free Software Foundatio 005 as published by the Free Software Foundation; either version 2 006 of the License, or (at your option) any lat 006 of the License, or (at your option) any later version. 007 007 008 This program is distributed in the hope tha 008 This program is distributed in the hope that it will be useful, 009 but WITHOUT ANY WARRANTY; without even the 009 but WITHOUT ANY WARRANTY; without even the implied warranty of 010 MERCHANTABILITY or FITNESS FOR A PARTICULAR 010 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 011 GNU General Public License for more details 011 GNU General Public License for more details. 012 012 013 You should have received a copy of the GNU 013 You should have received a copy of the GNU General Public License 014 along with this program; if not, write to t 014 along with this program; if not, write to the Free Software 015 Foundation, Inc., 59 Temple Place - Suite 3 015 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, 016 USA. 016 USA. 017 */ 017 */ 018 #ifndef _SOS_MACROS_H_ 018 #ifndef _SOS_MACROS_H_ 019 #define _SOS_MACROS_H_ 019 #define _SOS_MACROS_H_ 020 020 021 /** Align on a boundary (MUST be a power of 2) 021 /** Align on a boundary (MUST be a power of 2), so that return value <= val */ 022 #define SOS_ALIGN_INF(val,boundary) \ 022 #define SOS_ALIGN_INF(val,boundary) \ 023 (((unsigned)(val)) & (~((boundary)-1))) 023 (((unsigned)(val)) & (~((boundary)-1))) 024 024 025 /** Align on a boundary (MUST be a power of 2) 025 /** Align on a boundary (MUST be a power of 2), so that return value >= val */ 026 #define SOS_ALIGN_SUP(val,boundary) \ 026 #define SOS_ALIGN_SUP(val,boundary) \ 027 ({ unsigned int __bnd=(boundary); \ 027 ({ unsigned int __bnd=(boundary); \ 028 (((((unsigned)(val))-1) & (~(__bnd - 1))) 028 (((((unsigned)(val))-1) & (~(__bnd - 1))) + __bnd); }) 029 029 030 /** Check whether val is aligned on a boundary << 031 #define SOS_IS_ALIGNED(val,boundary) \ << 032 ( 0 == (((unsigned)(val)) & ((boundary)-1)) << 033 << 034 /** 030 /** 035 * @return TRUE if val is a power of 2. 031 * @return TRUE if val is a power of 2. 036 * @note val is evaluated multiple times 032 * @note val is evaluated multiple times 037 */ 033 */ 038 #define SOS_IS_POWER_OF_2(val) \ 034 #define SOS_IS_POWER_OF_2(val) \ 039 ((((val) - 1) & (val)) == 0) 035 ((((val) - 1) & (val)) == 0) 040 036 041 #endif /* _SOS_MACROS_H_ */ 037 #endif /* _SOS_MACROS_H_ */
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