contrib/diffutils-2.8.1/lib/inttostr.c

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