File: loadavg.h

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/*
 *	Top - a top users display for Berkeley Unix
 *
 *	Defines required to access load average figures.
 *
 *	This include file sets up everything we need to access the load average
 *	values in the kernel in a machine independent way.	First, it sets the
 *	typedef "load_avg" to be either double or long (depending on what is
 *	needed), then it defines these macros appropriately:
 *
 *	loaddouble(la) - convert load_avg to double.
 *	intload(i)	   - convert integer to load_avg.
 */

#ifndef _LOADAVG_H_
#define _LOADAVG_H_

/*
 * We assume that if FSCALE is defined, then avenrun and ccpu are type long.
 * If your machine is an exception (mips, perhaps?) then make adjustments
 * here.
 *
 * Defined types:  load_avg for load averages, pctcpu for cpu percentages.
 */
#if defined(mips) && !defined(NetBSD)
#include <sys/fixpoint.h>
#if defined(FBITS) && !defined(FSCALE)
#define FSCALE (1 << FBITS)		/* mips */
#endif
#endif

#ifdef FSCALE
#define FIXED_LOADAVG FSCALE
#define FIXED_PCTCPU FSCALE
#endif

#ifdef ibm032
#undef FIXED_LOADAVG
#undef FIXED_PCTCPU
#define FIXED_PCTCPU PCT_SCALE
#endif


#ifdef FIXED_PCTCPU
typedef long pctcpu;

#define pctdouble(p) ((double)(p) / FIXED_PCTCPU)
#else
typedef double pctcpu;

#define pctdouble(p) (p)
#endif

#ifdef FIXED_LOADAVG
typedef long load_avg;

#define loaddouble(la) ((double)(la) / FIXED_LOADAVG)
#define intload(i) ((int)((i) * FIXED_LOADAVG))
#else
typedef double load_avg;

#define loaddouble(la) (la)
#define intload(i) ((double)(i))
#endif

#endif   /* _LOADAVG_H_ */