comparison toolboxes/graph_visualisation/include/graphviz/arith.h @ 0:e9a9cd732c1e tip

first hg version after svn

+/* $Id: arith.h,v 1.16 2009/06/03 01:10:51 ellson Exp $ $Revision: 1.16 $ */
+/* 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
+
+#include <limits.h>
+#ifdef HAVE_VALUES_H
+#include <values.h>
+#endif
+#include <math.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))
+
+#define AVG(a,b)	((a + b) / 2)
+#define SGN(a)		(((a)<0)? -1 : 1)
+#define CMP(a,b)	(((a)<(b)) ? -1 : (((a)>(b)) ? 1 : 0))
+
+#ifndef INT_MAX
+#define	INT_MAX		((int)(~(unsigned)0 >> 1))
+#endif
+
+#ifndef INT_MIN
+#define INT_MIN		(-INT_MAX - 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 SQRT2
+#define SQRT2		1.41421356237309504880
+#endif
+
+#define ROUND(f)        ((f>=0)?(int)(f + .5):(int)(f - .5))
+#define RADIANS(deg)	((deg)/180.0 * M_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