2 * libmad - MPEG audio decoder library
3 * Copyright (C) 2000-2004 Underbit Technologies, Inc.
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19 * $Id: fixed.c,v 1.13 2004/01/23 09:41:32 rob Exp $
32 * DESCRIPTION: return absolute value of a fixed-point number
34 mad_fixed_t mad_f_abs(mad_fixed_t x)
36 return x < 0 ? -x : x;
41 * DESCRIPTION: perform division using fixed-point math
43 mad_fixed_t mad_f_div(mad_fixed_t x, mad_fixed_t y)
62 if (q > mad_f_intpart(MAD_F_MAX) &&
63 !(q == -mad_f_intpart(MAD_F_MIN) && r == 0 && (x < 0) != (y < 0)))
66 for (bits = MAD_F_FRACBITS; bits && r; --bits) {
77 if ((x < 0) != (y < 0))