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/* $Id: arith.h,v 1.7 2006/01/06 17:05:53 ellson Exp $ $Revision: 1.7 $ */
/* vim:set shiftwidth=4 ts=8: */
/**********************************************************
* This software is part of the graphviz package *
* http://www.graphviz.org/ *
* *
* Copyright (c) 1994-2004 AT&T Corp. *
* and is licensed under the *
* Common Public License, Version 1.0 *
* by AT&T Corp. *
* *
* Information and Software Systems Research *
* AT&T Research, Florham Park NJ *
**********************************************************/
/* geometric functions (e.g. on points and boxes) with application to, but
* no specific dependance on graphs */
#ifndef GV_ARITH_H
#define GV_ARITH_H
/* for sincos */
#ifndef _GNU_SOURCE
#define _GNU_SOURCE 1
#endif
#ifdef HAVE_LIMITS_H
#include <limits.h>
#else
#ifdef HAVE_VALUES_H
#include <values.h>
#endif
#endif
#include <math.h>
#include "logic.h"
#ifdef __cplusplus
extern "C" {
#endif
#ifdef MIN
#undef MIN
#endif
#define MIN(a,b) ((a)<(b)?(a):(b))
#ifdef MAX
#undef MAX
#endif
#define MAX(a,b) ((a)>(b)?(a):(b))
#ifdef ABS
#undef ABS
#endif
#define ABS(a) ((a) >= 0 ? (a) : -(a))
#ifndef MAXINT
#define MAXINT ((int)(~(unsigned)0 >> 1))
#endif
#ifndef MAXSHORT
#define MAXSHORT (0x7fff)
#endif
#ifndef MAXDOUBLE
#define MAXDOUBLE 1.7976931348623157e+308
#endif
#ifndef MAXFLOAT
#define MAXFLOAT ((float)3.40282347e+38)
#endif
#ifdef BETWEEN
#undef BETWEEN
#endif
#define BETWEEN(a,b,c) (((a) <= (b)) && ((b) <= (c)))
#ifndef M_PI
#define M_PI 3.14159265358979323846
#endif
#ifndef PI
#define PI M_PI
#endif
#define ROUND(f) ((f>=0)?(int)(f + .5):(int)(f - .5))
#define RADIANS(deg) ((deg)/180.0 * PI)
#define DEGREES(rad) ((rad)/M_PI * 180.0)
#define SQR(a) ((a) * (a))
#ifdef HAVE_SINCOS
extern void sincos(double x, double *s, double *c);
#else
# define sincos(x,s,c) *s = sin(x); *c = cos(x)
#endif
#ifdef __cplusplus
}
#endif
#endif
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