gnu/dist/diffutils/lib/inttostr.c

   1 /*      $NetBSD$        */
   2
   3 /* inttostr.c -- convert integers to printable strings
   4
   5    Copyright (C) 2001 Free Software Foundation, Inc.
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 2, or (at your option)
  10    any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program; if not, write to the Free Software Foundation,
  19    Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  20
  21 /* Written by Paul Eggert */
  22
  23 #include "inttostr.h"
  24
  25 /* Convert I to a printable string in BUF, which must be at least
  26    INT_BUFSIZE_BOUND (INTTYPE) bytes long.  Return the address of the
  27    printable string, which need not start at BUF.  */
  28
  29 char *
  30 inttostr (inttype i, char *buf)
  31 {
  32   char *p = buf + INT_STRLEN_BOUND (inttype);
  33   *p = 0;
  34
  35   if (i < 0)
  36     {
  37       do
  38         *--p = '0' - i % 10;
  39       while ((i /= 10) != 0);
  40
  41       *--p = '-';
  42     }
  43   else
  44     {
  45       do
  46         *--p = '0' + i % 10;
  47       while ((i /= 10) != 0);
  48     }
  49
  50   return p;
  51 }