64 lines
1.5 KiB
C
64 lines
1.5 KiB
C
/* itos.c -- Convert integer to string. */
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/* Copyright (C) 1998, Free Software Foundation, Inc.
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This file is part of GNU Bash, the Bourne Again SHell.
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Bash is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free
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Software Foundation; either version 2, or (at your option) any later
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version.
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Bash is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License along
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with Bash; see the file COPYING. If not, write to the Free Software
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Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
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#include <config.h>
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#if defined (HAVE_UNISTD_H)
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# include <unistd.h>
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#endif
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#include "bashansi.h"
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#include "shell.h"
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/* Number of characters that can appear in a string representation
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of an integer. 32 is larger than the string rep of 2^^31 - 1. */
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#define MAX_INT_LEN 32
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/* Integer to string conversion. This conses the string; the
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caller should free it. */
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char *
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itos (i)
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int i;
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{
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char buf[MAX_INT_LEN], *p, *ret;
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int negative = 0;
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unsigned int ui;
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if (i < 0)
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{
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negative++;
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i = -i;
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}
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ui = (unsigned int) i;
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p = buf + MAX_INT_LEN - 2;
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p[1] = '\0';
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do
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*p-- = (ui % 10) + '0';
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while (ui /= 10);
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if (negative)
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*p-- = '-';
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ret = savestring (p + 1);
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return (ret);
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}
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