busybox/libbb/human_readable.c

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/* vi: set sw=4 ts=4: */
/*
* Utility routines.
*
* Copyright (C) tons of folks. Tracking down who wrote what
* isn't something I'm going to worry about... If you wrote something
* here, please feel free to acknowledge your work.
*
* 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 of the License, 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
*
* Based in part on code from sash, Copyright (c) 1999 by David I. Bell
* Permission has been granted to redistribute this code under the GPL.
*
*/
#include <stdio.h>
#include "libbb.h"
static char buffer[10];
static const char *suffixes[] = { "", "k", "M", "G", "T" };
const char *make_human_readable_str(unsigned long val, unsigned long not_hr)
{
int suffix, base;
if (not_hr)
sprintf(buffer, "%lu", val);
else
for (suffix = 0, base = 1; suffix < 5; suffix++, base <<= 10) {
if (val < (base << 10)) {
if (suffix && val < 10 * base)
sprintf(buffer, "%lu.%lu%s", val / base,
(val % base) * 10 / base, suffixes[suffix]);
else
sprintf(buffer, "%lu%s", val / base, suffixes[suffix]);
break;
}
}
return buffer;
}