135 lines
3.5 KiB
C
135 lines
3.5 KiB
C
/* $NetBSD: rf_utils.c,v 1.16 2006/11/16 01:33:23 christos Exp $ */
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/*
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* Copyright (c) 1995 Carnegie-Mellon University.
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* All rights reserved.
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*
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* Author: Mark Holland
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*
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* Permission to use, copy, modify and distribute this software and
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* its documentation is hereby granted, provided that both the copyright
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* notice and this permission notice appear in all copies of the
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* software, derivative works or modified versions, and any portions
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* thereof, and that both notices appear in supporting documentation.
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*
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* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
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* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
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* FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
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*
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* Carnegie Mellon requests users of this software to return to
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*
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* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
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* School of Computer Science
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* Carnegie Mellon University
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* Pittsburgh PA 15213-3890
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*
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* any improvements or extensions that they make and grant Carnegie the
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* rights to redistribute these changes.
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*/
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/****************************************
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*
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* rf_utils.c -- various support routines
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*
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****************************************/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: rf_utils.c,v 1.16 2006/11/16 01:33:23 christos Exp $");
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#include "rf_archs.h"
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#include "rf_utils.h"
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#include "rf_debugMem.h"
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#include "rf_alloclist.h"
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/* creates & zeros 2-d array with b rows and k columns (MCH) */
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RF_RowCol_t **
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rf_make_2d_array(int b, int k, RF_AllocListElem_t *allocList)
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{
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RF_RowCol_t **retval, i;
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RF_MallocAndAdd(retval, b * sizeof(RF_RowCol_t *), (RF_RowCol_t **), allocList);
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for (i = 0; i < b; i++) {
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RF_MallocAndAdd(retval[i], k * sizeof(RF_RowCol_t), (RF_RowCol_t *), allocList);
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(void) memset((char *) retval[i], 0, k * sizeof(RF_RowCol_t));
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}
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return (retval);
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}
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#if (RF_INCLUDE_PARITY_DECLUSTERING > 0) || (RF_INCLUDE_PARITY_DECLUSTERING_PQ > 0)
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void
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rf_free_2d_array(RF_RowCol_t **a, int b, int k)
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{
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RF_RowCol_t i;
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for (i = 0; i < b; i++)
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RF_Free(a[i], k * sizeof(RF_RowCol_t));
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RF_Free(a, b * sizeof(RF_RowCol_t));
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}
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/* creates & zeros a 1-d array with c columns */
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RF_RowCol_t *
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rf_make_1d_array(int c, RF_AllocListElem_t *allocList)
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{
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RF_RowCol_t *retval;
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RF_MallocAndAdd(retval, c * sizeof(RF_RowCol_t), (RF_RowCol_t *), allocList);
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(void) memset((char *) retval, 0, c * sizeof(RF_RowCol_t));
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return (retval);
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}
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void
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rf_free_1d_array(RF_RowCol_t *a, int n)
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{
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RF_Free(a, n * sizeof(RF_RowCol_t));
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}
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/* Euclid's algorithm: finds and returns the greatest common divisor
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* between a and b. (MCH)
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*/
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int
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rf_gcd(int m, int n)
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{
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int t;
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while (m > 0) {
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t = n % m;
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n = m;
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m = t;
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}
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return (n);
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}
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#endif
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/* these convert between text and integer. Apparently the regular C macros
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* for doing this are not available in the kernel
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*/
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#define ISDIGIT(x) ( (x) >= '0' && (x) <= '9' )
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#define ISHEXCHAR(x) ( ((x) >= 'a' && (x) <= 'f') || ((x) >= 'A' && (x) <= 'F') )
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#define ISHEX(x) ( ISDIGIT(x) || ISHEXCHAR(x) )
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#define HC2INT(x) ( ((x) >= 'a' && (x) <= 'f') ? (x) - 'a' + 10 : \
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( ((x) >= 'A' && (x) <= 'F') ? (x) - 'A' + 10 : (x - '0') ) )
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int
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rf_atoi(char *p)
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{
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int val = 0, negate = 0;
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if (*p == '-') {
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negate = 1;
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p++;
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}
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for (; ISDIGIT(*p); p++)
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val = 10 * val + (*p - '0');
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return ((negate) ? -val : val);
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}
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int
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rf_htoi(char *p)
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{
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int val = 0;
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for (; ISHEXCHAR(*p); p++)
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val = 16 * val + HC2INT(*p);
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return (val);
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}
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