diff options
Diffstat (limited to 'arch/sparc64/math-emu/quad.h')
| -rw-r--r-- | arch/sparc64/math-emu/quad.h | 73 |
1 files changed, 70 insertions, 3 deletions
diff --git a/arch/sparc64/math-emu/quad.h b/arch/sparc64/math-emu/quad.h index dfc3b4eea..48fcc798c 100644 --- a/arch/sparc64/math-emu/quad.h +++ b/arch/sparc64/math-emu/quad.h @@ -1,12 +1,17 @@ /* * Definitions for IEEE Quad Precision */ - -#if _FP_W_TYPE_SIZE < 64 -#error "Only stud muffins allowed, schmuck." +#if _FP_W_TYPE_SIZE < 32 +/* It appears to be traditional to abuse 16bitters in these header files... */ +#error "Here's a nickel, kid. Go buy yourself a real computer." #endif +#if _FP_W_TYPE_SIZE < 64 +/* This is all terribly experimental and I don't know if it'll work properly -- PMM 02/1998 */ +#define _FP_FRACTBITS_Q (4*_FP_W_TYPE_SIZE) +#else #define _FP_FRACTBITS_Q (2*_FP_W_TYPE_SIZE) +#endif #define _FP_FRACBITS_Q 113 #define _FP_FRACXBITS_Q (_FP_FRACTBITS_Q - _FP_FRACBITS_Q) @@ -23,6 +28,66 @@ #define _FP_OVERFLOW_Q \ ((_FP_W_TYPE)1 << (_FP_WFRACBITS_Q % _FP_W_TYPE_SIZE)) +#if _FP_W_TYPE_SIZE < 64 + +union _FP_UNION_Q +{ + long double flt; + struct + { +#if __BYTE_ORDER == __BIG_ENDIAN + unsigned sign : 1; + unsigned exp : _FP_EXPBITS_Q; + unsigned long frac3 : _FP_FRACBITS_Q - (_FP_IMPLBIT_Q != 0)-(_FP_W_TYPE_SIZE * 3); + unsigned long frac2 : _FP_W_TYPE_SIZE; + unsigned long frac1 : _FP_W_TYPE_SIZE; + unsigned long frac0 : _FP_W_TYPE_SIZE; +#else + unsigned long frac0 : _FP_W_TYPE_SIZE; + unsigned long frac1 : _FP_W_TYPE_SIZE; + unsigned long frac2 : _FP_W_TYPE_SIZE; + unsigned long frac3 : _FP_FRACBITS_Q - (_FP_IMPLBIT_Q != 0)-(_FP_W_TYPE_SIZE * 3); + unsigned exp : _FP_EXPBITS_Q; + unsigned sign : 1; +#endif /* not bigendian */ + } bits __attribute__((packed)); +}; + + +#define FP_DECL_Q(X) _FP_DECL(4,X) +#define FP_UNPACK_RAW_Q(X,val) _FP_UNPACK_RAW_4(Q,X,val) +#define FP_PACK_RAW_Q(val,X) _FP_PACK_RAW_4(Q,val,X) + +#define FP_UNPACK_Q(X,val) \ + do { \ + _FP_UNPACK_RAW_4(Q,X,val); \ + _FP_UNPACK_CANONICAL(Q,4,X); \ + } while (0) + +#define FP_PACK_Q(val,X) \ + do { \ + _FP_PACK_CANONICAL(Q,4,X); \ + _FP_PACK_RAW_4(Q,val,X); \ + } while (0) + +#define FP_NEG_Q(R,X) _FP_NEG(Q,4,R,X) +#define FP_ADD_Q(R,X,Y) _FP_ADD(Q,4,R,X,Y) +/* single.h and double.h define FP_SUB_t this way too. However, _FP_SUB is + * never defined in op-common.h! Fortunately nobody seems to use the FP_SUB_t + * macros: I suggest a combination of FP_NEG and FP_ADD :-> -- PMM 02/1998 + */ +#define FP_SUB_Q(R,X,Y) _FP_SUB(Q,4,R,X,Y) +#define FP_MUL_Q(R,X,Y) _FP_MUL(Q,4,R,X,Y) +#define FP_DIV_Q(R,X,Y) _FP_DIV(Q,4,R,X,Y) +#define FP_SQRT_Q(R,X) _FP_SQRT(Q,4,R,X) + +#define FP_CMP_Q(r,X,Y,un) _FP_CMP(Q,4,r,X,Y,un) +#define FP_CMP_EQ_Q(r,X,Y) _FP_CMP_EQ(Q,4,r,X,Y) + +#define FP_TO_INT_Q(r,X,rsz,rsg) _FP_TO_INT(Q,4,r,X,rsz,rsg) +#define FP_FROM_INT_Q(X,r,rs,rt) _FP_FROM_INT(Q,4,X,r,rs,rt) + +#else /* not _FP_W_TYPE_SIZE < 64 */ union _FP_UNION_Q { long double flt /* __attribute__((mode(TF))) */ ; @@ -69,3 +134,5 @@ union _FP_UNION_Q #define FP_TO_INT_Q(r,X,rsz,rsg) _FP_TO_INT(Q,2,r,X,rsz,rsg) #define FP_FROM_INT_Q(X,r,rs,rt) _FP_FROM_INT(Q,2,X,r,rs,rt) + +#endif /* not _FP_W_TYPE_SIZE < 64 */ |