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
24 #ifdef FLOAT_ASM_MCS51
26 static void dummy(void) __naked
30 .globl fs_compare_uint32
36 cjne a, dpl, compare32_done
39 cjne a, b, compare32_done
42 cjne a, dph, compare32_done
46 cjne a, dpl, compare32_done
52 .globl fs_check_negative_zeros
53 fs_check_negative_zeros:
55 cjne a, #0x80, a_not_neg_zero
57 jnz a_not_neg_zero_cleanup
59 jnz a_not_neg_zero_cleanup
61 jnz a_not_neg_zero_cleanup
63 a_not_neg_zero_cleanup:
68 cjne @r0, #0x80, b_not_neg_zero
70 cjne @r0, #0, b_not_neg_zero_cleanup_1
72 cjne @r0, #0, b_not_neg_zero_cleanup_2
74 cjne @r0, #0, b_not_neg_zero_cleanup_3
80 b_not_neg_zero_cleanup_3:
82 b_not_neg_zero_cleanup_2:
84 b_not_neg_zero_cleanup_1: