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d876f532 UD |
1 | /* Software floating-point emulation. |
2 | Compare (*a) and (*b), return float condition code. | |
3 | Signal exception (unless masked) if unordered. | |
04277e02 | 4 | Copyright (C) 1997-2019 Free Software Foundation, Inc. |
d876f532 UD |
5 | This file is part of the GNU C Library. |
6 | Contributed by Richard Henderson (rth@cygnus.com) and | |
7 | Jakub Jelinek (jj@ultra.linux.cz). | |
8 | ||
9 | The GNU C Library is free software; you can redistribute it and/or | |
41bdb6e2 AJ |
10 | modify it under the terms of the GNU Lesser General Public |
11 | License as published by the Free Software Foundation; either | |
12 | version 2.1 of the License, or (at your option) any later version. | |
d876f532 UD |
13 | |
14 | The GNU C Library is distributed in the hope that it will be useful, | |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
41bdb6e2 | 17 | Lesser General Public License for more details. |
d876f532 | 18 | |
41bdb6e2 | 19 | You should have received a copy of the GNU Lesser General Public |
59ba27a6 PE |
20 | License along with the GNU C Library; if not, see |
21 | <http://www.gnu.org/licenses/>. */ | |
d876f532 UD |
22 | |
23 | #include "soft-fp.h" | |
24 | #include "quad.h" | |
25 | ||
26 | int _Qp_cmpe(const long double *a, const long double *b) | |
27 | { | |
28 | FP_DECL_EX; | |
29 | FP_DECL_Q(A); FP_DECL_Q(B); | |
30 | int r; | |
31 | ||
32 | FP_INIT_ROUNDMODE; | |
33 | FP_UNPACK_RAW_QP(A, a); | |
34 | FP_UNPACK_RAW_QP(B, b); | |
73e28d9c | 35 | FP_CMP_Q(r, B, A, 3, 2); |
d876f532 | 36 | if (r == -1) r = 2; |
d876f532 | 37 | QP_HANDLE_EXCEPTIONS( |
350635a5 | 38 | __asm ( |
ba77ce24 AJ |
39 | " ldd [%0], %%f52\n" |
40 | " ldd [%0+8], %%f54\n" | |
41 | " ldd [%1], %%f56\n" | |
42 | " ldd [%1+8], %%f58\n" | |
43 | " fcmpeq %%fcc3, %%f52, %%f56\n" | |
44 | " " : : "r" (a), "r" (b) : QP_CLOBBER_CC); | |
d876f532 UD |
45 | _FPU_GETCW(_fcw); |
46 | r = ((_fcw >> 36) & 3)); | |
47 | ||
48 | return r; | |
49 | } |