usr.sbin/sup/source/atoo.c

   1 /*      $NetBSD: atoo.c,v 1.4 2002/07/10 20:19:38 wiz Exp $     */
   2
   3 /*
   4  * Copyright (c) 1991 Carnegie Mellon University
   5  * All Rights Reserved.
   6  *
   7  * Permission to use, copy, modify and distribute this software and its
   8  * documentation is hereby granted, provided that both the copyright
   9  * notice and this permission notice appear in all copies of the
  10  * software, derivative works or modified versions, and any portions
  11  * thereof, and that both notices appear in supporting documentation.
  12  *
  13  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
  14  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
  15  * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
  16  *
  17  * Carnegie Mellon requests users of this software to return to
  18  *
  19  *  Software Distribution Coordinator   or   Software.Distribution@CS.CMU.EDU
  20  *  School of Computer Science
  21  *  Carnegie Mellon University
  22  *  Pittsburgh PA 15213-3890
  23  *
  24  * any improvements or extensions that they make and grant Carnegie the rights
  25  * to redistribute these changes.
  26  */
  27 /*  atoo  --  convert ascii to octal
  28  *
  29  *  Usage:  i = atoo (string);
  30  *      unsigned int i;
  31  *      char *string;
  32  *
  33  *  Atoo converts the value contained in "string" into an
  34  *  unsigned integer, assuming that the value represents
  35  *  an octal number.
  36  *
  37  *  HISTORY
  38  * 20-Nov-79  Steven Shafer (sas) at Carnegie-Mellon University
  39  *      Rewritten for VAX.
  40  *
  41  */
  42 #include "supcdefs.h"
  43 #include "supextern.h"
  44
  45 unsigned int
  46 atoo(char *ap)
  47 {
  48         unsigned int n;
  49         char *p;
  50
  51         p = ap;
  52         n = 0;
  53         while (*p == ' ' || *p == '     ')
  54                 p++;
  55         while (*p >= '0' && *p <= '7')
  56                 n = n * 8 + *p++ - '0';
  57         return (n);
  58 }