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64 lines
2.2 KiB
C
64 lines
2.2 KiB
C
19 years ago
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/*
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* $Id$
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*
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* Common header file
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* Copyright (C) 2002 ETC s.r.o.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the ETC s.r.o. nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* Written by Marcel Telka <marcel@telka.sk>, 2002.
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*
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*/
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#ifndef COMMON_H
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#define COMMON_H
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#ifndef LANGUAGE
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# ifdef __ASSEMBLY__
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# define LANGUAGE ASM
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# else
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# define LANGUAGE C
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# endif
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#endif
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#ifndef ASM
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#define ASM 0
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#endif
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#ifndef C
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#define C 1
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#endif
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#define MAX_BITS_ABS_VAL 1024
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#define BITS_ABS(a) (((((a) + MAX_BITS_ABS_VAL) / MAX_BITS_ABS_VAL) * 2 - 1) * (a))
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#define BITS_MIN(a,b) (((a) + (b) - BITS_ABS((a) - (b))) / 2)
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#define bit(b) (1 << (b))
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#define bits(b1,b2) (((2 << BITS_ABS((b1) - (b2))) - 1) << BITS_MIN(b1,b2))
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#define bits_val(b1,b2,v) (((v) << BITS_MIN(b1,b2)) & bits(b1,b2))
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#define bits_get(b1,b2,v) (((v) & bits(b1,b2)) >> BITS_MIN(b1,b2))
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#endif /* COMMON_H */
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