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 /include/math-emu/single.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 'include/math-emu/single.h')
-rw-r--r-- | include/math-emu/single.h | 116 |
1 files changed, 116 insertions, 0 deletions
diff --git a/include/math-emu/single.h b/include/math-emu/single.h new file mode 100644 index 000000000000..87f90b0f9e5d --- /dev/null +++ b/include/math-emu/single.h | |||
@@ -0,0 +1,116 @@ | |||
1 | /* Software floating-point emulation. | ||
2 | Definitions for IEEE Single Precision. | ||
3 | Copyright (C) 1997,1998,1999 Free Software Foundation, Inc. | ||
4 | This file is part of the GNU C Library. | ||
5 | Contributed by Richard Henderson (rth@cygnus.com), | ||
6 | Jakub Jelinek (jj@ultra.linux.cz), | ||
7 | David S. Miller (davem@redhat.com) and | ||
8 | Peter Maydell (pmaydell@chiark.greenend.org.uk). | ||
9 | |||
10 | The GNU C Library is free software; you can redistribute it and/or | ||
11 | modify it under the terms of the GNU Library General Public License as | ||
12 | published by the Free Software Foundation; either version 2 of the | ||
13 | License, or (at your option) any later version. | ||
14 | |||
15 | The GNU C Library is distributed in the hope that it will be useful, | ||
16 | but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
18 | Library General Public License for more details. | ||
19 | |||
20 | You should have received a copy of the GNU Library General Public | ||
21 | License along with the GNU C Library; see the file COPYING.LIB. If | ||
22 | not, write to the Free Software Foundation, Inc., | ||
23 | 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | ||
24 | |||
25 | #ifndef __MATH_EMU_SINGLE_H__ | ||
26 | #define __MATH_EMU_SINGLE_H__ | ||
27 | |||
28 | #if _FP_W_TYPE_SIZE < 32 | ||
29 | #error "Here's a nickel kid. Go buy yourself a real computer." | ||
30 | #endif | ||
31 | |||
32 | #define _FP_FRACBITS_S 24 | ||
33 | #define _FP_FRACXBITS_S (_FP_W_TYPE_SIZE - _FP_FRACBITS_S) | ||
34 | #define _FP_WFRACBITS_S (_FP_WORKBITS + _FP_FRACBITS_S) | ||
35 | #define _FP_WFRACXBITS_S (_FP_W_TYPE_SIZE - _FP_WFRACBITS_S) | ||
36 | #define _FP_EXPBITS_S 8 | ||
37 | #define _FP_EXPBIAS_S 127 | ||
38 | #define _FP_EXPMAX_S 255 | ||
39 | #define _FP_QNANBIT_S ((_FP_W_TYPE)1 << (_FP_FRACBITS_S-2)) | ||
40 | #define _FP_IMPLBIT_S ((_FP_W_TYPE)1 << (_FP_FRACBITS_S-1)) | ||
41 | #define _FP_OVERFLOW_S ((_FP_W_TYPE)1 << (_FP_WFRACBITS_S)) | ||
42 | |||
43 | /* The implementation of _FP_MUL_MEAT_S and _FP_DIV_MEAT_S should be | ||
44 | chosen by the target machine. */ | ||
45 | |||
46 | union _FP_UNION_S | ||
47 | { | ||
48 | float flt; | ||
49 | struct { | ||
50 | #if __BYTE_ORDER == __BIG_ENDIAN | ||
51 | unsigned sign : 1; | ||
52 | unsigned exp : _FP_EXPBITS_S; | ||
53 | unsigned frac : _FP_FRACBITS_S - (_FP_IMPLBIT_S != 0); | ||
54 | #else | ||
55 | unsigned frac : _FP_FRACBITS_S - (_FP_IMPLBIT_S != 0); | ||
56 | unsigned exp : _FP_EXPBITS_S; | ||
57 | unsigned sign : 1; | ||
58 | #endif | ||
59 | } bits __attribute__((packed)); | ||
60 | }; | ||
61 | |||
62 | #define FP_DECL_S(X) _FP_DECL(1,X) | ||
63 | #define FP_UNPACK_RAW_S(X,val) _FP_UNPACK_RAW_1(S,X,val) | ||
64 | #define FP_UNPACK_RAW_SP(X,val) _FP_UNPACK_RAW_1_P(S,X,val) | ||
65 | #define FP_PACK_RAW_S(val,X) _FP_PACK_RAW_1(S,val,X) | ||
66 | #define FP_PACK_RAW_SP(val,X) \ | ||
67 | do { \ | ||
68 | if (!FP_INHIBIT_RESULTS) \ | ||
69 | _FP_PACK_RAW_1_P(S,val,X); \ | ||
70 | } while (0) | ||
71 | |||
72 | #define FP_UNPACK_S(X,val) \ | ||
73 | do { \ | ||
74 | _FP_UNPACK_RAW_1(S,X,val); \ | ||
75 | _FP_UNPACK_CANONICAL(S,1,X); \ | ||
76 | } while (0) | ||
77 | |||
78 | #define FP_UNPACK_SP(X,val) \ | ||
79 | do { \ | ||
80 | _FP_UNPACK_RAW_1_P(S,X,val); \ | ||
81 | _FP_UNPACK_CANONICAL(S,1,X); \ | ||
82 | } while (0) | ||
83 | |||
84 | #define FP_PACK_S(val,X) \ | ||
85 | do { \ | ||
86 | _FP_PACK_CANONICAL(S,1,X); \ | ||
87 | _FP_PACK_RAW_1(S,val,X); \ | ||
88 | } while (0) | ||
89 | |||
90 | #define FP_PACK_SP(val,X) \ | ||
91 | do { \ | ||
92 | _FP_PACK_CANONICAL(S,1,X); \ | ||
93 | if (!FP_INHIBIT_RESULTS) \ | ||
94 | _FP_PACK_RAW_1_P(S,val,X); \ | ||
95 | } while (0) | ||
96 | |||
97 | #define FP_ISSIGNAN_S(X) _FP_ISSIGNAN(S,1,X) | ||
98 | #define FP_NEG_S(R,X) _FP_NEG(S,1,R,X) | ||
99 | #define FP_ADD_S(R,X,Y) _FP_ADD(S,1,R,X,Y) | ||
100 | #define FP_SUB_S(R,X,Y) _FP_SUB(S,1,R,X,Y) | ||
101 | #define FP_MUL_S(R,X,Y) _FP_MUL(S,1,R,X,Y) | ||
102 | #define FP_DIV_S(R,X,Y) _FP_DIV(S,1,R,X,Y) | ||
103 | #define FP_SQRT_S(R,X) _FP_SQRT(S,1,R,X) | ||
104 | #define _FP_SQRT_MEAT_S(R,S,T,X,Q) _FP_SQRT_MEAT_1(R,S,T,X,Q) | ||
105 | |||
106 | #define FP_CMP_S(r,X,Y,un) _FP_CMP(S,1,r,X,Y,un) | ||
107 | #define FP_CMP_EQ_S(r,X,Y) _FP_CMP_EQ(S,1,r,X,Y) | ||
108 | |||
109 | #define FP_TO_INT_S(r,X,rsz,rsg) _FP_TO_INT(S,1,r,X,rsz,rsg) | ||
110 | #define FP_TO_INT_ROUND_S(r,X,rsz,rsg) _FP_TO_INT_ROUND(S,1,r,X,rsz,rsg) | ||
111 | #define FP_FROM_INT_S(X,r,rs,rt) _FP_FROM_INT(S,1,X,r,rs,rt) | ||
112 | |||
113 | #define _FP_FRAC_HIGH_S(X) _FP_FRAC_HIGH_1(X) | ||
114 | #define _FP_FRAC_HIGH_RAW_S(X) _FP_FRAC_HIGH_1(X) | ||
115 | |||
116 | #endif /* __MATH_EMU_SINGLE_H__ */ | ||