diff options
Diffstat (limited to 'arch/powerpc/math-emu/double.h')
| -rw-r--r-- | arch/powerpc/math-emu/double.h | 129 |
1 files changed, 129 insertions, 0 deletions
diff --git a/arch/powerpc/math-emu/double.h b/arch/powerpc/math-emu/double.h new file mode 100644 index 0000000..ffba8b6 --- /dev/null +++ b/arch/powerpc/math-emu/double.h @@ -0,0 +1,129 @@ +/* + * Definitions for IEEE Double Precision + */ + +#if _FP_W_TYPE_SIZE < 32 +#error "Here's a nickel kid. Go buy yourself a real computer." +#endif + +#if _FP_W_TYPE_SIZE < 64 +#define _FP_FRACTBITS_D (2 * _FP_W_TYPE_SIZE) +#else +#define _FP_FRACTBITS_D _FP_W_TYPE_SIZE +#endif + +#define _FP_FRACBITS_D 53 +#define _FP_FRACXBITS_D (_FP_FRACTBITS_D - _FP_FRACBITS_D) +#define _FP_WFRACBITS_D (_FP_WORKBITS + _FP_FRACBITS_D) +#define _FP_WFRACXBITS_D (_FP_FRACTBITS_D - _FP_WFRACBITS_D) +#define _FP_EXPBITS_D 11 +#define _FP_EXPBIAS_D 1023 +#define _FP_EXPMAX_D 2047 + +#define _FP_QNANBIT_D \ + ((_FP_W_TYPE)1 << ((_FP_FRACBITS_D-2) % _FP_W_TYPE_SIZE)) +#define _FP_IMPLBIT_D \ + ((_FP_W_TYPE)1 << ((_FP_FRACBITS_D-1) % _FP_W_TYPE_SIZE)) +#define _FP_OVERFLOW_D \ + ((_FP_W_TYPE)1 << (_FP_WFRACBITS_D % _FP_W_TYPE_SIZE)) + +#if _FP_W_TYPE_SIZE < 64 + +union _FP_UNION_D +{ + double flt; + struct { +#if __BYTE_ORDER == __BIG_ENDIAN + unsigned sign : 1; + unsigned exp : _FP_EXPBITS_D; + unsigned frac1 : _FP_FRACBITS_D - (_FP_IMPLBIT_D != 0) - _FP_W_TYPE_SIZE; + unsigned frac0 : _FP_W_TYPE_SIZE; +#else + unsigned frac0 : _FP_W_TYPE_SIZE; + unsigned frac1 : _FP_FRACBITS_D - (_FP_IMPLBIT_D != 0) - _FP_W_TYPE_SIZE; + unsigned exp : _FP_EXPBITS_D; + unsigned sign : 1; +#endif + } bits __attribute__((packed)); +}; + +#define FP_DECL_D(X) _FP_DECL(2,X) +#define FP_UNPACK_RAW_D(X,val) _FP_UNPACK_RAW_2(D,X,val) +#define FP_PACK_RAW_D(val,X) _FP_PACK_RAW_2(D,val,X) + +#define FP_UNPACK_D(X,val) \ + do { \ + _FP_UNPACK_RAW_2(D,X,val); \ + _FP_UNPACK_CANONICAL(D,2,X); \ + } while (0) + +#define FP_PACK_D(val,X) \ + do { \ + _FP_PACK_CANONICAL(D,2,X); \ + _FP_PACK_RAW_2(D,val,X); \ + } while (0) + +#define FP_NEG_D(R,X) _FP_NEG(D,2,R,X) +#define FP_ADD_D(R,X,Y) _FP_ADD(D,2,R,X,Y) +#define FP_SUB_D(R,X,Y) _FP_SUB(D,2,R,X,Y) +#define FP_MUL_D(R,X,Y) _FP_MUL(D,2,R,X,Y) +#define FP_DIV_D(R,X,Y) _FP_DIV(D,2,R,X,Y) +#define FP_SQRT_D(R,X) _FP_SQRT(D,2,R,X) + +#define FP_CMP_D(r,X,Y,un) _FP_CMP(D,2,r,X,Y,un) +#define FP_CMP_EQ_D(r,X,Y) _FP_CMP_EQ(D,2,r,X,Y) + +#define FP_TO_INT_D(r,X,rsz,rsg) _FP_TO_INT(D,2,r,X,rsz,rsg) +#define FP_FROM_INT_D(X,r,rs,rt) _FP_FROM_INT(D,2,X,r,rs,rt) + +#else + +union _FP_UNION_D +{ + double flt; + struct { +#if __BYTE_ORDER == __BIG_ENDIAN + unsigned sign : 1; + unsigned exp : _FP_EXPBITS_D; + unsigned long frac : _FP_FRACBITS_D - (_FP_IMPLBIT_D != 0); +#else + unsigned long frac : _FP_FRACBITS_D - (_FP_IMPLBIT_D != 0); + unsigned exp : _FP_EXPBITS_D; + unsigned sign : 1; +#endif + } bits __attribute__((packed)); +}; + +#define FP_DECL_D(X) _FP_DECL(1,X) +#define FP_UNPACK_RAW_D(X,val) _FP_UNPACK_RAW_1(D,X,val) +#define FP_PACK_RAW_D(val,X) _FP_PACK_RAW_1(D,val,X) + +#define FP_UNPACK_D(X,val) \ + do { \ + _FP_UNPACK_RAW_1(D,X,val); \ + _FP_UNPACK_CANONICAL(D,1,X); \ + } while (0) + +#define FP_PACK_D(val,X) \ + do { \ + _FP_PACK_CANONICAL(D,1,X); \ + _FP_PACK_RAW_1(D,val,X); \ + } while (0) + +#define FP_NEG_D(R,X) _FP_NEG(D,1,R,X) +#define FP_ADD_D(R,X,Y) _FP_ADD(D,1,R,X,Y) +#define FP_SUB_D(R,X,Y) _FP_SUB(D,1,R,X,Y) +#define FP_MUL_D(R,X,Y) _FP_MUL(D,1,R,X,Y) +#define FP_DIV_D(R,X,Y) _FP_DIV(D,1,R,X,Y) +#define FP_SQRT_D(R,X) _FP_SQRT(D,1,R,X) + +/* The implementation of _FP_MUL_D and _FP_DIV_D should be chosen by + the target machine. */ + +#define FP_CMP_D(r,X,Y,un) _FP_CMP(D,1,r,X,Y,un) +#define FP_CMP_EQ_D(r,X,Y) _FP_CMP_EQ(D,1,r,X,Y) + +#define FP_TO_INT_D(r,X,rsz,rsg) _FP_TO_INT(D,1,r,X,rsz,rsg) +#define FP_FROM_INT_D(X,r,rs,rt) _FP_FROM_INT(D,1,X,r,rs,rt) + +#endif /* W_TYPE_SIZE < 64 */ |
