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      1 /*	$NetBSD: inttostr.h,v 1.1.1.1 2016/01/13 03:15:30 christos Exp $	*/
      2 
      3 /* inttostr.h -- 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 #if HAVE_CONFIG_H
     24 # include <config.h>
     25 #endif
     26 
     27 #if HAVE_INTTYPES_H
     28 # include <inttypes.h>
     29 #endif
     30 
     31 #if HAVE_LIMITS_H
     32 # include <limits.h>
     33 #endif
     34 #ifndef CHAR_BIT
     35 # define CHAR_BIT 8
     36 #endif
     37 
     38 #if HAVE_SYS_TYPES_H
     39 # include <sys/types.h>
     40 #endif
     41 
     42 #define TYPE_SIGNED(t) (! ((t) 0 < (t) -1))
     43 
     44 /* Upper bound on the string length of an integer converted to string.
     45    302 / 1000 is ceil (log10 (2.0)).  Subtract 1 for the sign bit;
     46    add 1 for integer division truncation; add 1 more for a minus sign.  */
     47 #define INT_STRLEN_BOUND(t) \
     48  ((sizeof (t) * CHAR_BIT - TYPE_SIGNED (t)) * 302 / 1000 + 1 + TYPE_SIGNED (t))
     49 
     50 #define INT_BUFSIZE_BOUND(t) (INT_STRLEN_BOUND (t) + 1)
     51 
     52 #ifndef PARAMS
     53 # if defined PROTOTYPES || defined __STDC__
     54 #  define PARAMS(Args) Args
     55 # else
     56 #  define PARAMS(Args) ()
     57 # endif
     58 #endif
     59 
     60 char *offtostr PARAMS ((off_t, char *));
     61 char *imaxtostr PARAMS ((intmax_t, char *));
     62 char *umaxtostr PARAMS ((uintmax_t, char *));
     63