1 | /* Software floating-point emulation. |
2 | Compare (*a) and (*b), return float condition code. |
3 | Signal exception (unless masked) if unordered. |
4 | Copyright (C) 1997-2024 Free Software Foundation, Inc. |
5 | This file is part of the GNU C Library. |
6 | |
7 | The GNU C Library is free software; you can redistribute it and/or |
8 | modify it under the terms of the GNU Lesser General Public |
9 | License as published by the Free Software Foundation; either |
10 | version 2.1 of the License, or (at your option) any later version. |
11 | |
12 | The GNU C Library is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
15 | Lesser General Public License for more details. |
16 | |
17 | You should have received a copy of the GNU Lesser General Public |
18 | License along with the GNU C Library; if not, see |
19 | <https://www.gnu.org/licenses/>. */ |
20 | |
21 | #include "soft-fp.h" |
22 | #include "quad.h" |
23 | |
24 | int _Qp_cmpe(const long double *a, const long double *b) |
25 | { |
26 | FP_DECL_EX; |
27 | FP_DECL_Q(A); FP_DECL_Q(B); |
28 | int r; |
29 | |
30 | FP_INIT_ROUNDMODE; |
31 | FP_UNPACK_RAW_QP(A, a); |
32 | FP_UNPACK_RAW_QP(B, b); |
33 | FP_CMP_Q(r, B, A, 3, 2); |
34 | if (r == -1) r = 2; |
35 | QP_HANDLE_EXCEPTIONS( |
36 | __asm ( |
37 | " ldd [%0], %%f52\n" |
38 | " ldd [%0+8], %%f54\n" |
39 | " ldd [%1], %%f56\n" |
40 | " ldd [%1+8], %%f58\n" |
41 | " fcmpeq %%fcc3, %%f52, %%f56\n" |
42 | " " : : "r" (a), "r" (b) : QP_CLOBBER_CC); |
43 | _FPU_GETCW(_fcw); |
44 | r = ((_fcw >> 36) & 3)); |
45 | |
46 | return r; |
47 | } |
48 | |