/*
 * $Header$
 * $Log$
 */

#ifndef __DEFS_H
#define __DEFS_H

#ifndef TRUE
#	define	FALSE	0
#	define	TRUE	1
#endif
#ifndef OFF
#	define OFF	0
#	define ON	1
#endif
#ifndef NO
#	define NO	0
#	define YES	1
#endif

#define NOTFOUND	-1

#define THERMAL_ENERGY	0.05
#define MAX_REAL	1e38
#ifndef PI
#	define PI	3.14159265358979323844
#	define PI2	6.28318530717958647692
#endif
#define PIover2		1.57079632679489661923
#define PIover180	1.74532925199433E-002
#define PIunder180	5.72957795130823E+001
#define LN10		2.30258509299405
#define ONEoverLN10	0.43429448190325

/* --- BIT definitions --- */
#define MASK1      0x0001
#define MASK2      0x0003
#define MASK3      0x0007
#define MASK4      0x000f
#define MASK5      0x001f
#define MASK6      0x003f
#define MASK7      0x007f
#define MASK8      0x00ff
#define MASK9      0x01ff
#define MASK10     0x03ff
#define MASK11     0x07ff
#define MASK12     0x0fff
#define MASK13     0x1fff
#define MASK14     0x3fff
#define MASK15     0x7fff
#define MASK16     0xffff

#define BIT0       0x0001
#define BIT1       0x0002
#define BIT2       0x0004
#define BIT3       0x0008
#define BIT4       0x0010
#define BIT5       0x0020
#define BIT6       0x0040
#define BIT7       0x0080
#define BIT8       0x0100
#define BIT9       0x0200
#define BIT10      0x0400
#define BIT11      0x0800
#define BIT12      0x1000
#define BIT13      0x2000
#define BIT14      0x4000
#define BIT15      0x8000
#define BIT16      0x10000L

/* ------------------ comonly used macros -------------------- */
#define	ISPRINT(c)	((c)>=' ' && (c)<='~' && (c)!='\'')
#define ISSPACE(c)	((c==0x09) || (c==0x0D) || (c==0x20))
#define HEXVAL(x)	(((x)>='A')?((((x)>='a')?((x)&(0xdf)):(x))-'A'+10):((x)-'0'))
#define CTL(a)		(('a') & 0x1f)
#define	ESC		((char)27)

#define SWAP(a,b)	a ^= b ^= a ^= b;

#define DIMENSION(p)	(sizeof(p) / sizeof(p[0]))
#define ABS(a)		(((a)<0)?-(a):(a))

#ifndef MAX
#	define MAX(a,b)	(((a)>(b))?(a):(b))
#	define MIN(a,b)	(((a)<(b))?(a):(b))
#endif

#define MAX3(a,b,c)	MAX(MAX(a,b),c)
#define MAX4(a,b,c,d)	MAX(MAX3(a,b,c),d)

#define MIN3(a,b,c)	MIN(MIN(a,b),c)
#define MIN4(a,b,c,d)	MIN(MIN3(a,b,c),d)

#define RANGE(a,x,b)	((x)<(a)?(a): ((x)>(b)?(b):(x)))
#define IN_RANGE(a,x,b)	(((a) <= (x)) && ((x) <= (b)))

#define ODD(n)		((n)&1)
#define EVEN(n)		(!((n)&1))

#define TRUNC(a)	((a)>=0? (int)(a) : (int)((a)-1))
#define ROUND(a)	((a)>=0? (int)((a)+0.5): -(int)(0.5-(a)))
#define CEILING(a)	((a)==(int)(a)? (int)(a): \
			(a)>0? (int)(1+(int)(a)): -(int)(1+(int)(-(a))))
#define FRAC(x)		((x)-(float)((int)(x)))
#define SIGN(x)		((x)>0? 1:(((x)==0)?0:-1))
#define SQR(x)		((x)*(x))

#define RAD(a)		((a)*PIover180)
#define DEG(a)		((a)*PIunder180)

#define COSD(a)		cos(RAD(a))
#define SIND(a)		sin(RAD(a))
#define TAND(a)		tan(RAD(a))

#define LOG(x)		(log(x)*ONEoverLN10)
#define EXP10(x)	exp((x)*LN10)

#endif