67 lines
1.9 KiB
C
67 lines
1.9 KiB
C
/*
|
|
* Definitions for IEEE Single Precision
|
|
*/
|
|
|
|
#if _FP_W_TYPE_SIZE < 32
|
|
#error "Here's a nickel kid. Go buy yourself a real computer."
|
|
#endif
|
|
|
|
#define _FP_FRACBITS_S 24
|
|
#define _FP_FRACXBITS_S (_FP_W_TYPE_SIZE - _FP_FRACBITS_S)
|
|
#define _FP_WFRACBITS_S (_FP_WORKBITS + _FP_FRACBITS_S)
|
|
#define _FP_WFRACXBITS_S (_FP_W_TYPE_SIZE - _FP_WFRACBITS_S)
|
|
#define _FP_EXPBITS_S 8
|
|
#define _FP_EXPBIAS_S 127
|
|
#define _FP_EXPMAX_S 255
|
|
#define _FP_QNANBIT_S ((_FP_W_TYPE)1 << (_FP_FRACBITS_S-2))
|
|
#define _FP_IMPLBIT_S ((_FP_W_TYPE)1 << (_FP_FRACBITS_S-1))
|
|
#define _FP_OVERFLOW_S ((_FP_W_TYPE)1 << (_FP_WFRACBITS_S))
|
|
|
|
/* The implementation of _FP_MUL_MEAT_S and _FP_DIV_MEAT_S should be
|
|
chosen by the target machine. */
|
|
|
|
union _FP_UNION_S
|
|
{
|
|
float flt;
|
|
struct {
|
|
#if __BYTE_ORDER == __BIG_ENDIAN
|
|
unsigned sign : 1;
|
|
unsigned exp : _FP_EXPBITS_S;
|
|
unsigned frac : _FP_FRACBITS_S - (_FP_IMPLBIT_S != 0);
|
|
#else
|
|
unsigned frac : _FP_FRACBITS_S - (_FP_IMPLBIT_S != 0);
|
|
unsigned exp : _FP_EXPBITS_S;
|
|
unsigned sign : 1;
|
|
#endif
|
|
} bits __attribute__((packed));
|
|
};
|
|
|
|
#define FP_DECL_S(X) _FP_DECL(1,X)
|
|
#define FP_UNPACK_RAW_S(X,val) _FP_UNPACK_RAW_1(S,X,val)
|
|
#define FP_PACK_RAW_S(val,X) _FP_PACK_RAW_1(S,val,X)
|
|
|
|
#define FP_UNPACK_S(X,val) \
|
|
do { \
|
|
_FP_UNPACK_RAW_1(S,X,val); \
|
|
_FP_UNPACK_CANONICAL(S,1,X); \
|
|
} while (0)
|
|
|
|
#define FP_PACK_S(val,X) \
|
|
do { \
|
|
_FP_PACK_CANONICAL(S,1,X); \
|
|
_FP_PACK_RAW_1(S,val,X); \
|
|
} while (0)
|
|
|
|
#define FP_NEG_S(R,X) _FP_NEG(S,1,R,X)
|
|
#define FP_ADD_S(R,X,Y) _FP_ADD(S,1,R,X,Y)
|
|
#define FP_SUB_S(R,X,Y) _FP_SUB(S,1,R,X,Y)
|
|
#define FP_MUL_S(R,X,Y) _FP_MUL(S,1,R,X,Y)
|
|
#define FP_DIV_S(R,X,Y) _FP_DIV(S,1,R,X,Y)
|
|
#define FP_SQRT_S(R,X) _FP_SQRT(S,1,R,X)
|
|
|
|
#define FP_CMP_S(r,X,Y,un) _FP_CMP(S,1,r,X,Y,un)
|
|
#define FP_CMP_EQ_S(r,X,Y) _FP_CMP_EQ(S,1,r,X,Y)
|
|
|
|
#define FP_TO_INT_S(r,X,rsz,rsg) _FP_TO_INT(S,1,r,X,rsz,rsg)
|
|
#define FP_FROM_INT_S(X,r,rs,rt) _FP_FROM_INT(S,1,X,r,rs,rt)
|