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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * Definitions for IEEE Single 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#define _FP_FRACBITS_S 24
10#define _FP_FRACXBITS_S (_FP_W_TYPE_SIZE - _FP_FRACBITS_S)
11#define _FP_WFRACBITS_S (_FP_WORKBITS + _FP_FRACBITS_S)
12#define _FP_WFRACXBITS_S (_FP_W_TYPE_SIZE - _FP_WFRACBITS_S)
13#define _FP_EXPBITS_S 8
14#define _FP_EXPBIAS_S 127
15#define _FP_EXPMAX_S 255
16#define _FP_QNANBIT_S ((_FP_W_TYPE)1 << (_FP_FRACBITS_S-2))
17#define _FP_IMPLBIT_S ((_FP_W_TYPE)1 << (_FP_FRACBITS_S-1))
18#define _FP_OVERFLOW_S ((_FP_W_TYPE)1 << (_FP_WFRACBITS_S))
19
20/* The implementation of _FP_MUL_MEAT_S and _FP_DIV_MEAT_S should be
21 chosen by the target machine. */
22
23union _FP_UNION_S
24{
25 float flt;
26 struct {
27#if __BYTE_ORDER == __BIG_ENDIAN
28 unsigned sign : 1;
29 unsigned exp : _FP_EXPBITS_S;
30 unsigned frac : _FP_FRACBITS_S - (_FP_IMPLBIT_S != 0);
31#else
32 unsigned frac : _FP_FRACBITS_S - (_FP_IMPLBIT_S != 0);
33 unsigned exp : _FP_EXPBITS_S;
34 unsigned sign : 1;
35#endif
36 } bits __attribute__((packed));
37};
38
39#define FP_DECL_S(X) _FP_DECL(1,X)
40#define FP_UNPACK_RAW_S(X,val) _FP_UNPACK_RAW_1(S,X,val)
41#define FP_PACK_RAW_S(val,X) _FP_PACK_RAW_1(S,val,X)
42
43#define FP_UNPACK_S(X,val) \
44 do { \
45 _FP_UNPACK_RAW_1(S,X,val); \
46 _FP_UNPACK_CANONICAL(S,1,X); \
47 } while (0)
48
49#define FP_PACK_S(val,X) \
50 do { \
51 _FP_PACK_CANONICAL(S,1,X); \
52 _FP_PACK_RAW_1(S,val,X); \
53 } while (0)
54
55#define FP_NEG_S(R,X) _FP_NEG(S,1,R,X)
56#define FP_ADD_S(R,X,Y) _FP_ADD(S,1,R,X,Y)
57#define FP_SUB_S(R,X,Y) _FP_SUB(S,1,R,X,Y)
58#define FP_MUL_S(R,X,Y) _FP_MUL(S,1,R,X,Y)
59#define FP_DIV_S(R,X,Y) _FP_DIV(S,1,R,X,Y)
60#define FP_SQRT_S(R,X) _FP_SQRT(S,1,R,X)
61
62#define FP_CMP_S(r,X,Y,un) _FP_CMP(S,1,r,X,Y,un)
63#define FP_CMP_EQ_S(r,X,Y) _FP_CMP_EQ(S,1,r,X,Y)
64
65#define FP_TO_INT_S(r,X,rsz,rsg) _FP_TO_INT(S,1,r,X,rsz,rsg)
66#define FP_FROM_INT_S(X,r,rs,rt) _FP_FROM_INT(S,1,X,r,rs,rt)