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/* $OpenBSD: rf_hist.h,v 1.3 2002/12/16 07:01:04 tdeval Exp $ */
/* $NetBSD: rf_hist.h,v 1.3 1999/02/05 00:06:12 oster Exp $ */
/*
* rf_hist.h
*
* Histgram operations for RAIDframe stats.
*/
/*
* Copyright (c) 1995 Carnegie-Mellon University.
* All rights reserved.
*
* Author: Jim Zelenka
*
* Permission to use, copy, modify and distribute this software and
* its documentation is hereby granted, provided that both the copyright
* notice and this permission notice appear in all copies of the
* software, derivative works or modified versions, and any portions
* thereof, and that both notices appear in supporting documentation.
*
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
* FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
*
* Carnegie Mellon requests users of this software to return to
*
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
* School of Computer Science
* Carnegie Mellon University
* Pittsburgh PA 15213-3890
*
* any improvements or extensions that they make and grant Carnegie the
* rights to redistribute these changes.
*/
#ifndef _RF__RF_HIST_H_
#define _RF__RF_HIST_H_
#include "rf_types.h"
#define RF_HIST_RESOLUTION 5
#define RF_HIST_MIN_VAL 0
#define RF_HIST_MAX_VAL 1000
#define RF_HIST_RANGE (RF_HIST_MAX_VAL - RF_HIST_MIN_VAL)
#define RF_HIST_NUM_BUCKETS (RF_HIST_RANGE / RF_HIST_RESOLUTION + 1)
typedef RF_uint32 RF_Hist_t;
#define RF_HIST_ADD(_hist_,_val_) do { \
RF_Hist_t val; \
val = ((RF_Hist_t)(_val_)) / 1000; \
if (val >= RF_HIST_MAX_VAL) \
_hist_[RF_HIST_NUM_BUCKETS-1]++; \
else \
_hist_[(val - RF_HIST_MIN_VAL) / RF_HIST_RESOLUTION]++; \
} while (0)
#endif /* !_RF__RF_HIST_H_ */
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