diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /arch/mips/math-emu/sp_cmp.c |
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'arch/mips/math-emu/sp_cmp.c')
-rw-r--r-- | arch/mips/math-emu/sp_cmp.c | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/arch/mips/math-emu/sp_cmp.c b/arch/mips/math-emu/sp_cmp.c new file mode 100644 index 000000000000..d3eff6b04b5a --- /dev/null +++ b/arch/mips/math-emu/sp_cmp.c | |||
@@ -0,0 +1,67 @@ | |||
1 | /* IEEE754 floating point arithmetic | ||
2 | * single precision | ||
3 | */ | ||
4 | /* | ||
5 | * MIPS floating point support | ||
6 | * Copyright (C) 1994-2000 Algorithmics Ltd. | ||
7 | * http://www.algor.co.uk | ||
8 | * | ||
9 | * ######################################################################## | ||
10 | * | ||
11 | * This program is free software; you can distribute it and/or modify it | ||
12 | * under the terms of the GNU General Public License (Version 2) as | ||
13 | * published by the Free Software Foundation. | ||
14 | * | ||
15 | * This program is distributed in the hope it will be useful, but WITHOUT | ||
16 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | ||
17 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | ||
18 | * for more details. | ||
19 | * | ||
20 | * You should have received a copy of the GNU General Public License along | ||
21 | * with this program; if not, write to the Free Software Foundation, Inc., | ||
22 | * 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. | ||
23 | * | ||
24 | * ######################################################################## | ||
25 | */ | ||
26 | |||
27 | |||
28 | #include "ieee754sp.h" | ||
29 | |||
30 | int ieee754sp_cmp(ieee754sp x, ieee754sp y, int cmp, int sig) | ||
31 | { | ||
32 | COMPXSP; | ||
33 | COMPYSP; | ||
34 | |||
35 | EXPLODEXSP; | ||
36 | EXPLODEYSP; | ||
37 | FLUSHXSP; | ||
38 | FLUSHYSP; | ||
39 | CLEARCX; /* Even clear inexact flag here */ | ||
40 | |||
41 | if (ieee754sp_isnan(x) || ieee754sp_isnan(y)) { | ||
42 | if (sig || xc == IEEE754_CLASS_SNAN || yc == IEEE754_CLASS_SNAN) | ||
43 | SETCX(IEEE754_INVALID_OPERATION); | ||
44 | if (cmp & IEEE754_CUN) | ||
45 | return 1; | ||
46 | if (cmp & (IEEE754_CLT | IEEE754_CGT)) { | ||
47 | if (sig && SETANDTESTCX(IEEE754_INVALID_OPERATION)) | ||
48 | return ieee754si_xcpt(0, "fcmpf", x); | ||
49 | } | ||
50 | return 0; | ||
51 | } else { | ||
52 | int vx = x.bits; | ||
53 | int vy = y.bits; | ||
54 | |||
55 | if (vx < 0) | ||
56 | vx = -vx ^ SP_SIGN_BIT; | ||
57 | if (vy < 0) | ||
58 | vy = -vy ^ SP_SIGN_BIT; | ||
59 | |||
60 | if (vx < vy) | ||
61 | return (cmp & IEEE754_CLT) != 0; | ||
62 | else if (vx == vy) | ||
63 | return (cmp & IEEE754_CEQ) != 0; | ||
64 | else | ||
65 | return (cmp & IEEE754_CGT) != 0; | ||
66 | } | ||
67 | } | ||