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1 | /* Total order operation on absolute values. flt-32 version. |
2 | Copyright (C) 2016 Free Software Foundation, Inc. | |
3 | This file is part of the GNU C Library. | |
4 | ||
5 | The GNU C Library is free software; you can redistribute it and/or | |
6 | modify it under the terms of the GNU Lesser General Public | |
7 | License as published by the Free Software Foundation; either | |
8 | version 2.1 of the License, or (at your option) any later version. | |
9 | ||
10 | The GNU C Library is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 | Lesser General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU Lesser General Public | |
16 | License along with the GNU C Library; if not, see | |
17 | <http://www.gnu.org/licenses/>. */ | |
18 | ||
19 | #include <math.h> | |
20 | #include <math_private.h> | |
21 | #include <stdint.h> | |
22 | ||
23 | int | |
24 | totalordermagf (float x, float y) | |
25 | { | |
26 | uint32_t ix, iy; | |
27 | GET_FLOAT_WORD (ix, x); | |
28 | GET_FLOAT_WORD (iy, y); | |
29 | ix &= 0x7fffffff; | |
30 | iy &= 0x7fffffff; | |
31 | #ifdef HIGH_ORDER_BIT_IS_SET_FOR_SNAN | |
32 | /* For the preferred quiet NaN convention, this operation is a | |
33 | comparison of the representations of the absolute values of the | |
34 | arguments. If both arguments are NaNs, invert the | |
35 | quiet/signaling bit so comparing that way works. */ | |
36 | if (ix > 0x7f800000 && iy > 0x7f800000) | |
37 | { | |
38 | ix ^= 0x00400000; | |
39 | iy ^= 0x00400000; | |
40 | } | |
41 | #endif | |
42 | return ix <= iy; | |
43 | } |