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/* itos.c -- Convert integer to string. */
/* Copyright (C) 1998, Free Software Foundation, Inc.
This file is part of GNU Bash, the Bourne Again SHell.
Bash 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.
Bash 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 Bash; see the file COPYING. If not, write to the Free Software
Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
#include <config.h>
#if defined (HAVE_UNISTD_H)
# include <unistd.h>
#endif
#include "bashansi.h"
#include "shell.h"
/* Number of characters that can appear in a string representation
of an integer. 32 is larger than the string rep of 2^^31 - 1. */
#define MAX_INT_LEN 32
/* Integer to string conversion. The caller passes the buffer and
the size. This should check for buffer underflow, but currently
does not. */
char *
inttostr (i, buf, len)
int i;
char *buf;
int len;
{
char *p;
int negative = 0;
unsigned int ui;
if (i < 0)
{
negative++;
i = -i;
}
ui = (unsigned int) i;
p = buf + len - 2;
p[1] = '\0';
do
*p-- = (ui % 10) + '0';
while (ui /= 10);
if (negative)
*p-- = '-';
return (p + 1);
}
/* Integer to string conversion. This conses the string; the
caller should free it. */
char *
itos (i)
int i;
{
char *p, lbuf[MAX_INT_LEN];
p = inttostr (i, lbuf, sizeof(lbuf));
return (savestring (p));
}
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