2 * Copyright Droids Corporation, Microb Technology, Eirbot (2005)
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18 * Revision : $Id: f16_double.c,v 1.5.4.2 2008-05-10 15:06:26 zer0 Exp $
25 /* value of 2^^8 in float */
26 #define POW2_8F (256.0)
29 /**************** double <-> f16 */
31 f16 f16_from_double(double d)
34 f.f16_decimal = (uint8_t) ((d - (int8_t)d) * POW2_8F);
35 f.f16_integer = (d < 0 && f.f16_decimal != 0 ? (int8_t)d-1 : (int8_t)d) ;
40 double f16_to_double(f16 f)
45 d += ((double)f.f16_decimal / POW2_8F);