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sysadm |
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/*
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* Copyright (C) 2000,2001 Onlyer (onlyer@263.net)
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifndef INCLUDED_BIT_H
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#define INCLUDED_BIT_H
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#define BIT_POS(n) ( 1u << (n) )
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#define BIT_SET_FLAG(n,f) ( (n) |= (f) )
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#define BIT_CLR_FLAG(n,f) ( (n) &= ~(f) )
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#define BIT_TST_FLAG(n,f) ( ((n) & (f)) ? 1: 0 )
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#define BIT_SET_CLR_FLAG(n, f, v) ( (v)?(BIT_SET_FLAG(n,f)):(BIT_CLR_FLAG(n,f)) )
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#define BIT_RANGE(n,m) ( BIT_POS((m)+1-(n)) - BIT_POS(n) )
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#define BIT_LSHIFT(n,m) ( (n) << (m) )
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#define BIT_RSHIFT(n,m) ( (n) >> (m) )
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#define BIT_GET(n, m) ( ((n) >> (m)) & 1)
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#define BIT_GET_RANGE(n, m, l) ( ((n) >> (m)) & (1u << (l) -1))
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#define BIT_GET_RANGE_MASK(n, m, mask) ( ((n) >> (m)) & (mask))
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#endif
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