1 /* Floating point library in optimized assembly for 8051
2 * Copyright (c) 2004, Paul Stoffregen, paul@pjrc.com
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Library General Public License
6 * as published by the Free Software Foundation; either version 2
7 * of the License, or (at your option) any later version.
9 * This library 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.
20 #define SDCC_FLOAT_LIB
25 #ifdef FLOAT_ASM_MCS51
27 // char __fs2schar (float x)
28 static void dummy(void) _naked
34 jnb sign_a, fs2schar_pos
37 jnz fs2schar_maxval_neg
40 jnz fs2schar_maxval_neg
43 jnz fs2schar_maxval_neg
45 jnb acc.7, fs2schar_maxval_neg
51 jnz fs2schar_maxval_pos
53 jnz fs2schar_maxval_pos
55 jnz fs2schar_maxval_pos
57 jb acc.7, fs2schar_maxval_pos
69 /* convert float to signed char */
70 signed char __fs2schar (float f) {
71 signed long sl=__fs2slong(f);