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/i386/math-emu/control_w.h |
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/i386/math-emu/control_w.h')
-rw-r--r-- | arch/i386/math-emu/control_w.h | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/arch/i386/math-emu/control_w.h b/arch/i386/math-emu/control_w.h new file mode 100644 index 000000000000..ae2274dbd305 --- /dev/null +++ b/arch/i386/math-emu/control_w.h | |||
@@ -0,0 +1,45 @@ | |||
1 | /*---------------------------------------------------------------------------+ | ||
2 | | control_w.h | | ||
3 | | | | ||
4 | | Copyright (C) 1992,1993 | | ||
5 | | W. Metzenthen, 22 Parker St, Ormond, Vic 3163, | | ||
6 | | Australia. E-mail billm@vaxc.cc.monash.edu.au | | ||
7 | | | | ||
8 | +---------------------------------------------------------------------------*/ | ||
9 | |||
10 | #ifndef _CONTROLW_H_ | ||
11 | #define _CONTROLW_H_ | ||
12 | |||
13 | #ifdef __ASSEMBLY__ | ||
14 | #define _Const_(x) $##x | ||
15 | #else | ||
16 | #define _Const_(x) x | ||
17 | #endif | ||
18 | |||
19 | #define CW_RC _Const_(0x0C00) /* rounding control */ | ||
20 | #define CW_PC _Const_(0x0300) /* precision control */ | ||
21 | |||
22 | #define CW_Precision Const_(0x0020) /* loss of precision mask */ | ||
23 | #define CW_Underflow Const_(0x0010) /* underflow mask */ | ||
24 | #define CW_Overflow Const_(0x0008) /* overflow mask */ | ||
25 | #define CW_ZeroDiv Const_(0x0004) /* divide by zero mask */ | ||
26 | #define CW_Denormal Const_(0x0002) /* denormalized operand mask */ | ||
27 | #define CW_Invalid Const_(0x0001) /* invalid operation mask */ | ||
28 | |||
29 | #define CW_Exceptions _Const_(0x003f) /* all masks */ | ||
30 | |||
31 | #define RC_RND _Const_(0x0000) | ||
32 | #define RC_DOWN _Const_(0x0400) | ||
33 | #define RC_UP _Const_(0x0800) | ||
34 | #define RC_CHOP _Const_(0x0C00) | ||
35 | |||
36 | /* p 15-5: Precision control bits affect only the following: | ||
37 | ADD, SUB(R), MUL, DIV(R), and SQRT */ | ||
38 | #define PR_24_BITS _Const_(0x000) | ||
39 | #define PR_53_BITS _Const_(0x200) | ||
40 | #define PR_64_BITS _Const_(0x300) | ||
41 | #define PR_RESERVED_BITS _Const_(0x100) | ||
42 | /* FULL_PRECISION simulates all exceptions masked */ | ||
43 | #define FULL_PRECISION (PR_64_BITS | RC_RND | 0x3f) | ||
44 | |||
45 | #endif /* _CONTROLW_H_ */ | ||