/*
    Copyright (C) 2008 Andreas Baumann <abaumann@yahoo.com>

    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 3 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, see <http://www.gnu.org/licenses/>.
*/

#include "port/stdlib.h"

#if !defined HAVE_ITOA || defined TEST_ITOA

#include "port/string.h"	/* for strlen */

static void reverse( char *s ) {
	int i, j;
	char c;

	for( i = 0, j = (int)strlen( s )-1; i<j; i++, j-- ) {
		c = s[i];
		s[i] = s[j];
		s[j] = c;
	}
}

char *wolf_port_itoa( int value, char *string, int radix ) {
	int sign;
	int i;
	int digit;

	/* remember sign and make value positive */
	sign = value;
	if( sign < 0 ) {
		value = -value;
	}

	i = 0;
	do {
		digit = value % radix;
		value = value / radix;
		if( digit < 10 ) {
			string[i++] = (char)( digit + '0' );
		} else {
			string[i++] = (char)( digit - 10 + 'A' );
		}
	} while( value > 0 );

	if( sign < 0 ) {
		string[i++] = '-';
	}
	string[i] = '\0';

	reverse( string );

	return string;
}

#endif /* !defined HAVE_ITOA || defined TEST_ITOA */