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/ppc/math-emu/double.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/ppc/math-emu/double.h')
-rw-r--r-- | arch/ppc/math-emu/double.h | 129 |
1 files changed, 129 insertions, 0 deletions
diff --git a/arch/ppc/math-emu/double.h b/arch/ppc/math-emu/double.h new file mode 100644 index 000000000000..ffba8b67f059 --- /dev/null +++ b/arch/ppc/math-emu/double.h | |||
@@ -0,0 +1,129 @@ | |||
1 | /* | ||
2 | * Definitions for IEEE Double Precision | ||
3 | */ | ||
4 | |||
5 | #if _FP_W_TYPE_SIZE < 32 | ||
6 | #error "Here's a nickel kid. Go buy yourself a real computer." | ||
7 | #endif | ||
8 | |||
9 | #if _FP_W_TYPE_SIZE < 64 | ||
10 | #define _FP_FRACTBITS_D (2 * _FP_W_TYPE_SIZE) | ||
11 | #else | ||
12 | #define _FP_FRACTBITS_D _FP_W_TYPE_SIZE | ||
13 | #endif | ||
14 | |||
15 | #define _FP_FRACBITS_D 53 | ||
16 | #define _FP_FRACXBITS_D (_FP_FRACTBITS_D - _FP_FRACBITS_D) | ||
17 | #define _FP_WFRACBITS_D (_FP_WORKBITS + _FP_FRACBITS_D) | ||
18 | #define _FP_WFRACXBITS_D (_FP_FRACTBITS_D - _FP_WFRACBITS_D) | ||
19 | #define _FP_EXPBITS_D 11 | ||
20 | #define _FP_EXPBIAS_D 1023 | ||
21 | #define _FP_EXPMAX_D 2047 | ||
22 | |||
23 | #define _FP_QNANBIT_D \ | ||
24 | ((_FP_W_TYPE)1 << ((_FP_FRACBITS_D-2) % _FP_W_TYPE_SIZE)) | ||
25 | #define _FP_IMPLBIT_D \ | ||
26 | ((_FP_W_TYPE)1 << ((_FP_FRACBITS_D-1) % _FP_W_TYPE_SIZE)) | ||
27 | #define _FP_OVERFLOW_D \ | ||
28 | ((_FP_W_TYPE)1 << (_FP_WFRACBITS_D % _FP_W_TYPE_SIZE)) | ||
29 | |||
30 | #if _FP_W_TYPE_SIZE < 64 | ||
31 | |||
32 | union _FP_UNION_D | ||
33 | { | ||
34 | double flt; | ||
35 | struct { | ||
36 | #if __BYTE_ORDER == __BIG_ENDIAN | ||
37 | unsigned sign : 1; | ||
38 | unsigned exp : _FP_EXPBITS_D; | ||
39 | unsigned frac1 : _FP_FRACBITS_D - (_FP_IMPLBIT_D != 0) - _FP_W_TYPE_SIZE; | ||
40 | unsigned frac0 : _FP_W_TYPE_SIZE; | ||
41 | #else | ||
42 | unsigned frac0 : _FP_W_TYPE_SIZE; | ||
43 | unsigned frac1 : _FP_FRACBITS_D - (_FP_IMPLBIT_D != 0) - _FP_W_TYPE_SIZE; | ||
44 | unsigned exp : _FP_EXPBITS_D; | ||
45 | unsigned sign : 1; | ||
46 | #endif | ||
47 | } bits __attribute__((packed)); | ||
48 | }; | ||
49 | |||
50 | #define FP_DECL_D(X) _FP_DECL(2,X) | ||
51 | #define FP_UNPACK_RAW_D(X,val) _FP_UNPACK_RAW_2(D,X,val) | ||
52 | #define FP_PACK_RAW_D(val,X) _FP_PACK_RAW_2(D,val,X) | ||
53 | |||
54 | #define FP_UNPACK_D(X,val) \ | ||
55 | do { \ | ||
56 | _FP_UNPACK_RAW_2(D,X,val); \ | ||
57 | _FP_UNPACK_CANONICAL(D,2,X); \ | ||
58 | } while (0) | ||
59 | |||
60 | #define FP_PACK_D(val,X) \ | ||
61 | do { \ | ||
62 | _FP_PACK_CANONICAL(D,2,X); \ | ||
63 | _FP_PACK_RAW_2(D,val,X); \ | ||
64 | } while (0) | ||
65 | |||
66 | #define FP_NEG_D(R,X) _FP_NEG(D,2,R,X) | ||
67 | #define FP_ADD_D(R,X,Y) _FP_ADD(D,2,R,X,Y) | ||
68 | #define FP_SUB_D(R,X,Y) _FP_SUB(D,2,R,X,Y) | ||
69 | #define FP_MUL_D(R,X,Y) _FP_MUL(D,2,R,X,Y) | ||
70 | #define FP_DIV_D(R,X,Y) _FP_DIV(D,2,R,X,Y) | ||
71 | #define FP_SQRT_D(R,X) _FP_SQRT(D,2,R,X) | ||
72 | |||
73 | #define FP_CMP_D(r,X,Y,un) _FP_CMP(D,2,r,X,Y,un) | ||
74 | #define FP_CMP_EQ_D(r,X,Y) _FP_CMP_EQ(D,2,r,X,Y) | ||
75 | |||
76 | #define FP_TO_INT_D(r,X,rsz,rsg) _FP_TO_INT(D,2,r,X,rsz,rsg) | ||
77 | #define FP_FROM_INT_D(X,r,rs,rt) _FP_FROM_INT(D,2,X,r,rs,rt) | ||
78 | |||
79 | #else | ||
80 | |||
81 | union _FP_UNION_D | ||
82 | { | ||
83 | double flt; | ||
84 | struct { | ||
85 | #if __BYTE_ORDER == __BIG_ENDIAN | ||
86 | unsigned sign : 1; | ||
87 | unsigned exp : _FP_EXPBITS_D; | ||
88 | unsigned long frac : _FP_FRACBITS_D - (_FP_IMPLBIT_D != 0); | ||
89 | #else | ||
90 | unsigned long frac : _FP_FRACBITS_D - (_FP_IMPLBIT_D != 0); | ||
91 | unsigned exp : _FP_EXPBITS_D; | ||
92 | unsigned sign : 1; | ||
93 | #endif | ||
94 | } bits __attribute__((packed)); | ||
95 | }; | ||
96 | |||
97 | #define FP_DECL_D(X) _FP_DECL(1,X) | ||
98 | #define FP_UNPACK_RAW_D(X,val) _FP_UNPACK_RAW_1(D,X,val) | ||
99 | #define FP_PACK_RAW_D(val,X) _FP_PACK_RAW_1(D,val,X) | ||
100 | |||
101 | #define FP_UNPACK_D(X,val) \ | ||
102 | do { \ | ||
103 | _FP_UNPACK_RAW_1(D,X,val); \ | ||
104 | _FP_UNPACK_CANONICAL(D,1,X); \ | ||
105 | } while (0) | ||
106 | |||
107 | #define FP_PACK_D(val,X) \ | ||
108 | do { \ | ||
109 | _FP_PACK_CANONICAL(D,1,X); \ | ||
110 | _FP_PACK_RAW_1(D,val,X); \ | ||
111 | } while (0) | ||
112 | |||
113 | #define FP_NEG_D(R,X) _FP_NEG(D,1,R,X) | ||
114 | #define FP_ADD_D(R,X,Y) _FP_ADD(D,1,R,X,Y) | ||
115 | #define FP_SUB_D(R,X,Y) _FP_SUB(D,1,R,X,Y) | ||
116 | #define FP_MUL_D(R,X,Y) _FP_MUL(D,1,R,X,Y) | ||
117 | #define FP_DIV_D(R,X,Y) _FP_DIV(D,1,R,X,Y) | ||
118 | #define FP_SQRT_D(R,X) _FP_SQRT(D,1,R,X) | ||
119 | |||
120 | /* The implementation of _FP_MUL_D and _FP_DIV_D should be chosen by | ||
121 | the target machine. */ | ||
122 | |||
123 | #define FP_CMP_D(r,X,Y,un) _FP_CMP(D,1,r,X,Y,un) | ||
124 | #define FP_CMP_EQ_D(r,X,Y) _FP_CMP_EQ(D,1,r,X,Y) | ||
125 | |||
126 | #define FP_TO_INT_D(r,X,rsz,rsg) _FP_TO_INT(D,1,r,X,rsz,rsg) | ||
127 | #define FP_FROM_INT_D(X,r,rs,rt) _FP_FROM_INT(D,1,X,r,rs,rt) | ||
128 | |||
129 | #endif /* W_TYPE_SIZE < 64 */ | ||