1 /* inttostr.h -- convert integers to printable strings
3 Copyright (C) 2001 Free Software Foundation, Inc.
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)
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.
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. */
19 /* Written by Paul Eggert */
26 # include <inttypes.h>
37 # include <sys/types.h>
40 #define TYPE_SIGNED(t) (! ((t) 0 < (t) -1))
42 /* Upper bound on the string length of an integer converted to string.
43 302 / 1000 is ceil (log10 (2.0)). Subtract 1 for the sign bit;
44 add 1 for integer division truncation; add 1 more for a minus sign. */
45 #define INT_STRLEN_BOUND(t) \
46 ((sizeof (t) * CHAR_BIT - TYPE_SIGNED (t)) * 302 / 1000 + 1 + TYPE_SIGNED (t))
48 #define INT_BUFSIZE_BOUND(t) (INT_STRLEN_BOUND (t) + 1)
51 # if defined PROTOTYPES || defined __STDC__
52 # define PARAMS(Args) Args
54 # define PARAMS(Args) ()
58 char *offtostr PARAMS ((off_t, char *));
59 char *imaxtostr PARAMS ((intmax_t, char *));
60 char *umaxtostr PARAMS ((uintmax_t, char *));