coreutils/lib/inttostr.h
2002-10-19 12:34:03 +00:00

58 lines
1.7 KiB
C

/* inttostr.h -- convert integers to printable strings
Copyright (C) 2001, 2002 Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software Foundation,
Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
/* Written by Paul Eggert */
#if HAVE_CONFIG_H
# include <config.h>
#endif
#if HAVE_INTTYPES_H
# include <inttypes.h>
#endif
#if HAVE_LIMITS_H
# include <limits.h>
#endif
#ifndef CHAR_BIT
# define CHAR_BIT 8
#endif
#if HAVE_SYS_TYPES_H
# include <sys/types.h>
#endif
/* Upper bound on the string length of an integer converted to string.
302 / 1000 is ceil (log10 (2.0)). Subtract 1 for the sign bit;
add 1 for integer division truncation; add 1 more for a minus sign. */
#define INT_STRLEN_BOUND(t) ((sizeof (t) * CHAR_BIT - 1) * 302 / 1000 + 2)
#define INT_BUFSIZE_BOUND(t) (INT_STRLEN_BOUND (t) + 1)
#ifndef PARAMS
# if defined PROTOTYPES || defined __STDC__
# define PARAMS(Args) Args
# else
# define PARAMS(Args) ()
# endif
#endif
char *offtostr PARAMS ((off_t, char *));
char *imaxtostr PARAMS ((intmax_t, char *));
char *umaxtostr PARAMS ((uintmax_t, char *));