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/**
* common.h
*
* Author: Damian Eads
* Date: September 22, 2007 (moved into new file on June 8, 2008)
*
* Copyright (c) 2007, 2008, Damian Eads. All rights reserved.
* Adapted for incorporation into Scipy, April 9, 2008.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* - Redistributions of source code must retain the above
* copyright notice, this list of conditions and the
* following disclaimer.
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* - Neither the name of the author nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _CLUSTER_COMMON_H
#define _CLUSTER_COMMON_H
#define CPY_MAX(_x, _y) ((_x > _y) ? (_x) : (_y))
#define CPY_MIN(_x, _y) ((_x < _y) ? (_x) : (_y))
#define NCHOOSE2(_n) ((_n)*(_n-1)/2)
#define CPY_BITS_PER_CHAR (sizeof(unsigned char) * 8)
#define CPY_FLAG_ARRAY_SIZE_BYTES(num_bits) (CPY_CEIL_DIV((num_bits), \
CPY_BITS_PER_CHAR))
#define CPY_GET_BIT(_xx, i) (((_xx)[(i) / CPY_BITS_PER_CHAR] >> \
((CPY_BITS_PER_CHAR-1) - \
((i) % CPY_BITS_PER_CHAR))) & 0x1)
#define CPY_SET_BIT(_xx, i) ((_xx)[(i) / CPY_BITS_PER_CHAR] |= \
((0x1) << ((CPY_BITS_PER_CHAR-1) \
-((i) % CPY_BITS_PER_CHAR))))
#define CPY_CLEAR_BIT(_xx, i) ((_xx)[(i) / CPY_BITS_PER_CHAR] &= \
~((0x1) << ((CPY_BITS_PER_CHAR-1) \
-((i) % CPY_BITS_PER_CHAR))))
#ifndef CPY_CEIL_DIV
#define CPY_CEIL_DIV(x, y) ((((double)x)/(double)y) == \
((double)((x)/(y))) ? ((x)/(y)) : ((x)/(y) + 1))
#endif
#ifdef CPY_DEBUG
#define CPY_DEBUG_MSG(...) fprintf(stderr, __VA_ARGS__)
#else
#define CPY_DEBUG_MSG(...)
#endif
#endif
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