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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 | /* * BK Id: SCCS/s.double.h 1.5 05/17/01 18:14:22 cort */ /* * 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 */ |