projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| fb088911 | 1 | /* Software floating-point emulation: comparison. |
| bfff8b1b | 2 | Copyright (C) 1997-2017 Free Software Foundation, Inc. |
| fb088911 RH |
3 | This file is part of the GNU C Library. |
| 4 | Contributed by Richard Henderson (rth@cygnus.com) and | |
| 5 | Jakub Jelinek (jj@ultra.linux.cz). | |
| 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 | |
| ab84e3ff PE |
18 | License along with the GNU C Library. If not, see |
| 19 | <http://www.gnu.org/licenses/>. */ | |
| fb088911 RH |
20 | |
| 21 | #include "local-soft-fp.h" | |
| 22 | ||
| 23 | static long | |
| 24 | internal_equality (long al, long ah, long bl, long bh, long neq) | |
| 25 | { | |
| 26 | FP_DECL_EX; | |
| 27 | FP_DECL_Q(A); FP_DECL_Q(B); | |
| 28 | long r; | |
| 29 | ||
| 4886f341 RH |
30 | AXP_UNPACK_RAW_Q(A, a); |
| 31 | AXP_UNPACK_RAW_Q(B, b); | |
| fb088911 RH |
32 | |
| 33 | if ((A_e == _FP_EXPMAX_Q && !_FP_FRAC_ZEROP_2(A)) | |
| 34 | || (B_e == _FP_EXPMAX_Q && !_FP_FRAC_ZEROP_2(B))) | |
| 35 | { | |
| 36 | /* EQ and NE signal invalid operation only if either operand is SNaN. */ | |
| 37 | if (FP_ISSIGNAN_Q(A) || FP_ISSIGNAN_Q(B)) | |
| 38 | { | |
| 39 | FP_SET_EXCEPTION(FP_EX_INVALID); | |
| 40 | FP_HANDLE_EXCEPTIONS; | |
| 41 | } | |
| 42 | return -1; | |
| 43 | } | |
| 44 | ||
| 45 | r = (A_e == B_e | |
| 46 | && _FP_FRAC_EQ_2 (A, B) | |
| 47 | && (A_s == B_s || (!A_e && _FP_FRAC_ZEROP_2(A)))); | |
| 48 | r ^= neq; | |
| 49 | ||
| 50 | return r; | |
| 51 | } | |
| 52 | ||
| 53 | long | |
| 54 | _OtsEqlX (long al, long ah, long bl, long bh) | |
| 55 | { | |
| 56 | return internal_equality (al, ah, bl, bh, 0); | |
| 57 | } | |
| 58 | ||
| 59 | long | |
| 60 | _OtsNeqX (long al, long ah, long bl, long bh) | |
| 61 | { | |
| 62 | return internal_equality (al, ah, bl, bh, 1); | |
| 63 | } |