65 lines
1.5 KiB
C
65 lines
1.5 KiB
C
|
/* 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. This conses the string; the
|
||
|
|
caller should free it. */
|
||
|
|
char *
|
||
|
|
itos (i)
|
||
|
|
int i;
|
||
|
|
{
|
||
|
|
char buf[MAX_INT_LEN], *p, *ret;
|
||
|
|
int negative = 0;
|
||
|
|
unsigned int ui;
|
||
|
|
|
||
|
|
if (i < 0)
|
||
|
|
{
|
||
|
|
negative++;
|
||
|
|
i = -i;
|
||
|
|
}
|
||
|
|
|
||
|
|
ui = (unsigned int) i;
|
||
|
|
|
||
|
|
p = buf + MAX_INT_LEN - 2;
|
||
|
|
p[1] = '\0';
|
||
|
|
|
||
|
|
do
|
||
|
|
*p-- = (ui % 10) + '0';
|
||
|
|
while (ui /= 10);
|
||
|
|
|
||
|
|
if (negative)
|
||
|
|
*p-- = '-';
|
||
|
|
|
||
|
|
ret = savestring (p + 1);
|
||
|
|
return (ret);
|
||
|
|
}
|