projects / mirror_ubuntu-jammy-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| 9d5a6349 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
| 1da177e4 LT |
2 | /* IEEE754 floating point arithmetic |
| 3 | * single precision | |
| 4 | */ | |
| 5 | /* | |
| 6 | * MIPS floating point support | |
| 7 | * Copyright (C) 1994-2000 Algorithmics Ltd. | |
| 1da177e4 LT |
8 | */ |
| 9 | ||
| 1da177e4 LT |
10 | #include "ieee754sp.h" |
| 11 | ||
| 2209bcb1 | 12 | int ieee754sp_cmp(union ieee754sp x, union ieee754sp y, int cmp, int sig) |
| 1da177e4 | 13 | { |
| 3f7cac41 RB |
14 | int vx; |
| 15 | int vy; | |
| 16 | ||
| 1da177e4 LT |
17 | COMPXSP; |
| 18 | COMPYSP; | |
| 19 | ||
| 20 | EXPLODEXSP; | |
| 21 | EXPLODEYSP; | |
| 22 | FLUSHXSP; | |
| 23 | FLUSHYSP; | |
| 9e8bad1f | 24 | ieee754_clearcx(); /* Even clear inexact flag here */ |
| 1da177e4 | 25 | |
| c9a10845 | 26 | if (ieee754_class_nan(xc) || ieee754_class_nan(yc)) { |
| b844bc78 MR |
27 | if (sig || |
| 28 | xc == IEEE754_CLASS_SNAN || yc == IEEE754_CLASS_SNAN) | |
| 9e8bad1f | 29 | ieee754_setcx(IEEE754_INVALID_OPERATION); |
| bd267a53 | 30 | return (cmp & IEEE754_CUN) != 0; |
| 1da177e4 | 31 | } else { |
| 3f7cac41 RB |
32 | vx = x.bits; |
| 33 | vy = y.bits; | |
| 1da177e4 LT |
34 | |
| 35 | if (vx < 0) | |
| 36 | vx = -vx ^ SP_SIGN_BIT; | |
| 37 | if (vy < 0) | |
| 38 | vy = -vy ^ SP_SIGN_BIT; | |
| 39 | ||
| 40 | if (vx < vy) | |
| 41 | return (cmp & IEEE754_CLT) != 0; | |
| 42 | else if (vx == vy) | |
| 43 | return (cmp & IEEE754_CEQ) != 0; | |
| 44 | else | |
| 45 | return (cmp & IEEE754_CGT) != 0; | |
| 46 | } | |
| 47 | } |