1 /* $OpenBSD: rf_hist.h,v 1.3 2002/12/16 07:01:04 tdeval Exp $ */ 2 /* $NetBSD: rf_hist.h,v 1.3 1999/02/05 00:06:12 oster Exp $ */ 3 4 /* 5 * rf_hist.h 6 * 7 * Histgram operations for RAIDframe stats. 8 */ 9 /* 10 * Copyright (c) 1995 Carnegie-Mellon University. 11 * All rights reserved. 12 * 13 * Author: Jim Zelenka 14 * 15 * Permission to use, copy, modify and distribute this software and 16 * its documentation is hereby granted, provided that both the copyright 17 * notice and this permission notice appear in all copies of the 18 * software, derivative works or modified versions, and any portions 19 * thereof, and that both notices appear in supporting documentation. 20 * 21 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" 22 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND 23 * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. 24 * 25 * Carnegie Mellon requests users of this software to return to 26 * 27 * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU 28 * School of Computer Science 29 * Carnegie Mellon University 30 * Pittsburgh PA 15213-3890 31 * 32 * any improvements or extensions that they make and grant Carnegie the 33 * rights to redistribute these changes. 34 */ 35 36 #ifndef _RF__RF_HIST_H_ 37 #define _RF__RF_HIST_H_ 38 39 #include "rf_types.h" 40 41 #define RF_HIST_RESOLUTION 5 42 #define RF_HIST_MIN_VAL 0 43 #define RF_HIST_MAX_VAL 1000 44 #define RF_HIST_RANGE (RF_HIST_MAX_VAL - RF_HIST_MIN_VAL) 45 #define RF_HIST_NUM_BUCKETS (RF_HIST_RANGE / RF_HIST_RESOLUTION + 1) 46 47 typedef RF_uint32 RF_Hist_t; 48 49 #define RF_HIST_ADD(_hist_,_val_) do { \ 50 RF_Hist_t val; \ 51 val = ((RF_Hist_t)(_val_)) / 1000; \ 52 if (val >= RF_HIST_MAX_VAL) \ 53 _hist_[RF_HIST_NUM_BUCKETS-1]++; \ 54 else \ 55 _hist_[(val - RF_HIST_MIN_VAL) / RF_HIST_RESOLUTION]++; \ 56 } while (0) 57 58 #endif /* !_RF__RF_HIST_H_ */ 59