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annotate lib/inttostr.c @ 4983:1ade121b7fb9

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New module inttostr.
author Paul Eggert <eggert@cs.ucla.edu>
date Wed, 31 Mar 2004 06:21:11 +0000
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children a48fb0e98c8c
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1 /* inttostr.c -- convert integers to printable strings
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2
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3 Copyright (C) 2001 Free Software Foundation, Inc.
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4
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5 This program is free software; you can redistribute it and/or modify
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6 it under the terms of the GNU General Public License as published by
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7 the Free Software Foundation; either version 2, or (at your option)
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8 any later version.
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9
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10 This program is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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13 GNU General Public License for more details.
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14
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15 You should have received a copy of the GNU General Public License
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16 along with this program; if not, write to the Free Software Foundation,
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17 Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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18
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19 /* Written by Paul Eggert */
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20
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21 #include "inttostr.h"
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22
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23 /* Convert I to a printable string in BUF, which must be at least
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24 INT_BUFSIZE_BOUND (INTTYPE) bytes long. Return the address of the
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25 printable string, which need not start at BUF. */
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26
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27 char *
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28 inttostr (inttype i, char *buf)
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29 {
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30 char *p = buf + INT_STRLEN_BOUND (inttype);
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31 *p = 0;
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32
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33 if (i < 0)
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34 {
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35 do
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36 *--p = '0' - i % 10;
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37 while ((i /= 10) != 0);
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38
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39 *--p = '-';
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40 }
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41 else
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42 {
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43 do
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44 *--p = '0' + i % 10;
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45 while ((i /= 10) != 0);
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46 }
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47
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48 return p;
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49 }