github.com/matrixorigin/matrixone@v0.7.0/cgo/external/decNumber/decDouble.h (about) 1 /* ------------------------------------------------------------------ */ 2 /* decDouble.h -- Decimal 64-bit format module header */ 3 /* ------------------------------------------------------------------ */ 4 /* Copyright (c) IBM Corporation, 2000, 2010. All rights reserved. */ 5 /* */ 6 /* This software is made available under the terms of the */ 7 /* ICU License -- ICU 1.8.1 and later. */ 8 /* */ 9 /* The description and User's Guide ("The decNumber C Library") for */ 10 /* this software is included in the package as decNumber.pdf. This */ 11 /* document is also available in HTML, together with specifications, */ 12 /* testcases, and Web links, on the General Decimal Arithmetic page. */ 13 /* */ 14 /* Please send comments, suggestions, and corrections to the author: */ 15 /* mfc@uk.ibm.com */ 16 /* Mike Cowlishaw, IBM Fellow */ 17 /* IBM UK, PO Box 31, Birmingham Road, Warwick CV34 5JL, UK */ 18 /* ------------------------------------------------------------------ */ 19 20 #if !defined(DECDOUBLE) 21 #define DECDOUBLE 22 23 #define DECDOUBLENAME "decimalDouble" /* Short name */ 24 #define DECDOUBLETITLE "Decimal 64-bit datum" /* Verbose name */ 25 #define DECDOUBLEAUTHOR "Mike Cowlishaw" /* Who to blame */ 26 27 /* parameters for decDoubles */ 28 #define DECDOUBLE_Bytes 8 /* length */ 29 #define DECDOUBLE_Pmax 16 /* maximum precision (digits) */ 30 #define DECDOUBLE_Emin -383 /* minimum adjusted exponent */ 31 #define DECDOUBLE_Emax 384 /* maximum adjusted exponent */ 32 #define DECDOUBLE_EmaxD 3 /* maximum exponent digits */ 33 #define DECDOUBLE_Bias 398 /* bias for the exponent */ 34 #define DECDOUBLE_String 25 /* maximum string length, +1 */ 35 #define DECDOUBLE_EconL 8 /* exponent continuation length */ 36 #define DECDOUBLE_Declets 5 /* count of declets */ 37 /* highest biased exponent (Elimit-1) */ 38 #define DECDOUBLE_Ehigh (DECDOUBLE_Emax + DECDOUBLE_Bias - (DECDOUBLE_Pmax-1)) 39 40 /* Required includes */ 41 #include "decContext.h" 42 #include "decQuad.h" 43 44 /* The decDouble decimal 64-bit type, accessible by all sizes */ 45 typedef union { 46 uint8_t bytes[DECDOUBLE_Bytes]; /* fields: 1, 5, 8, 50 bits */ 47 uint16_t shorts[DECDOUBLE_Bytes/2]; 48 uint32_t words[DECDOUBLE_Bytes/4]; 49 #if DECUSE64 50 uint64_t longs[DECDOUBLE_Bytes/8]; 51 #endif 52 } decDouble; 53 54 /* ---------------------------------------------------------------- */ 55 /* Routines -- implemented as decFloat routines in common files */ 56 /* ---------------------------------------------------------------- */ 57 58 /* Utilities and conversions, extractors, etc.) */ 59 extern decDouble * decDoubleFromBCD(decDouble *, int32_t, const uint8_t *, int32_t); 60 extern decDouble * decDoubleFromInt32(decDouble *, int32_t); 61 extern decDouble * decDoubleFromPacked(decDouble *, int32_t, const uint8_t *); 62 extern decDouble * decDoubleFromPackedChecked(decDouble *, int32_t, const uint8_t *); 63 extern decDouble * decDoubleFromString(decDouble *, const char *, decContext *); 64 extern decDouble * decDoubleFromUInt32(decDouble *, uint32_t); 65 extern decDouble * decDoubleFromWider(decDouble *, const decQuad *, decContext *); 66 extern int32_t decDoubleGetCoefficient(const decDouble *, uint8_t *); 67 extern int32_t decDoubleGetExponent(const decDouble *); 68 extern decDouble * decDoubleSetCoefficient(decDouble *, const uint8_t *, int32_t); 69 extern decDouble * decDoubleSetExponent(decDouble *, decContext *, int32_t); 70 extern void decDoubleShow(const decDouble *, const char *); 71 extern int32_t decDoubleToBCD(const decDouble *, int32_t *, uint8_t *); 72 extern char * decDoubleToEngString(const decDouble *, char *); 73 extern int32_t decDoubleToInt32(const decDouble *, decContext *, enum rounding); 74 extern int32_t decDoubleToInt32Exact(const decDouble *, decContext *, enum rounding); 75 extern int32_t decDoubleToPacked(const decDouble *, int32_t *, uint8_t *); 76 extern char * decDoubleToString(const decDouble *, char *); 77 extern uint32_t decDoubleToUInt32(const decDouble *, decContext *, enum rounding); 78 extern uint32_t decDoubleToUInt32Exact(const decDouble *, decContext *, enum rounding); 79 extern decQuad * decDoubleToWider(const decDouble *, decQuad *); 80 extern decDouble * decDoubleZero(decDouble *); 81 82 /* Computational (result is a decDouble) */ 83 extern decDouble * decDoubleAbs(decDouble *, const decDouble *, decContext *); 84 extern decDouble * decDoubleAdd(decDouble *, const decDouble *, const decDouble *, decContext *); 85 extern decDouble * decDoubleAnd(decDouble *, const decDouble *, const decDouble *, decContext *); 86 extern decDouble * decDoubleDivide(decDouble *, const decDouble *, const decDouble *, decContext *); 87 extern decDouble * decDoubleDivideInteger(decDouble *, const decDouble *, const decDouble *, decContext *); 88 extern decDouble * decDoubleFMA(decDouble *, const decDouble *, const decDouble *, const decDouble *, decContext *); 89 extern decDouble * decDoubleInvert(decDouble *, const decDouble *, decContext *); 90 extern decDouble * decDoubleLogB(decDouble *, const decDouble *, decContext *); 91 extern decDouble * decDoubleMax(decDouble *, const decDouble *, const decDouble *, decContext *); 92 extern decDouble * decDoubleMaxMag(decDouble *, const decDouble *, const decDouble *, decContext *); 93 extern decDouble * decDoubleMin(decDouble *, const decDouble *, const decDouble *, decContext *); 94 extern decDouble * decDoubleMinMag(decDouble *, const decDouble *, const decDouble *, decContext *); 95 extern decDouble * decDoubleMinus(decDouble *, const decDouble *, decContext *); 96 extern decDouble * decDoubleMultiply(decDouble *, const decDouble *, const decDouble *, decContext *); 97 extern decDouble * decDoubleNextMinus(decDouble *, const decDouble *, decContext *); 98 extern decDouble * decDoubleNextPlus(decDouble *, const decDouble *, decContext *); 99 extern decDouble * decDoubleNextToward(decDouble *, const decDouble *, const decDouble *, decContext *); 100 extern decDouble * decDoubleOr(decDouble *, const decDouble *, const decDouble *, decContext *); 101 extern decDouble * decDoublePlus(decDouble *, const decDouble *, decContext *); 102 extern decDouble * decDoubleQuantize(decDouble *, const decDouble *, const decDouble *, decContext *); 103 extern decDouble * decDoubleReduce(decDouble *, const decDouble *, decContext *); 104 extern decDouble * decDoubleRemainder(decDouble *, const decDouble *, const decDouble *, decContext *); 105 extern decDouble * decDoubleRemainderNear(decDouble *, const decDouble *, const decDouble *, decContext *); 106 extern decDouble * decDoubleRotate(decDouble *, const decDouble *, const decDouble *, decContext *); 107 extern decDouble * decDoubleScaleB(decDouble *, const decDouble *, const decDouble *, decContext *); 108 extern decDouble * decDoubleShift(decDouble *, const decDouble *, const decDouble *, decContext *); 109 extern decDouble * decDoubleSubtract(decDouble *, const decDouble *, const decDouble *, decContext *); 110 extern decDouble * decDoubleToIntegralValue(decDouble *, const decDouble *, decContext *, enum rounding); 111 extern decDouble * decDoubleToIntegralExact(decDouble *, const decDouble *, decContext *); 112 extern decDouble * decDoubleXor(decDouble *, const decDouble *, const decDouble *, decContext *); 113 114 /* Comparisons */ 115 extern decDouble * decDoubleCompare(decDouble *, const decDouble *, const decDouble *, decContext *); 116 extern decDouble * decDoubleCompareSignal(decDouble *, const decDouble *, const decDouble *, decContext *); 117 extern decDouble * decDoubleCompareTotal(decDouble *, const decDouble *, const decDouble *); 118 extern decDouble * decDoubleCompareTotalMag(decDouble *, const decDouble *, const decDouble *); 119 120 /* Copies */ 121 extern decDouble * decDoubleCanonical(decDouble *, const decDouble *); 122 extern decDouble * decDoubleCopy(decDouble *, const decDouble *); 123 extern decDouble * decDoubleCopyAbs(decDouble *, const decDouble *); 124 extern decDouble * decDoubleCopyNegate(decDouble *, const decDouble *); 125 extern decDouble * decDoubleCopySign(decDouble *, const decDouble *, const decDouble *); 126 127 /* Non-computational */ 128 extern enum decClass decDoubleClass(const decDouble *); 129 extern const char * decDoubleClassString(const decDouble *); 130 extern uint32_t decDoubleDigits(const decDouble *); 131 extern uint32_t decDoubleIsCanonical(const decDouble *); 132 extern uint32_t decDoubleIsFinite(const decDouble *); 133 extern uint32_t decDoubleIsInfinite(const decDouble *); 134 extern uint32_t decDoubleIsInteger(const decDouble *); 135 extern uint32_t decDoubleIsLogical(const decDouble *); 136 extern uint32_t decDoubleIsNaN(const decDouble *); 137 extern uint32_t decDoubleIsNegative(const decDouble *); 138 extern uint32_t decDoubleIsNormal(const decDouble *); 139 extern uint32_t decDoubleIsPositive(const decDouble *); 140 extern uint32_t decDoubleIsSignaling(const decDouble *); 141 extern uint32_t decDoubleIsSignalling(const decDouble *); 142 extern uint32_t decDoubleIsSigned(const decDouble *); 143 extern uint32_t decDoubleIsSubnormal(const decDouble *); 144 extern uint32_t decDoubleIsZero(const decDouble *); 145 extern uint32_t decDoubleRadix(const decDouble *); 146 extern uint32_t decDoubleSameQuantum(const decDouble *, const decDouble *); 147 extern const char * decDoubleVersion(void); 148 149 /* decNumber conversions; these are implemented as macros so as not */ 150 /* to force a dependency on decimal64 and decNumber in decDouble. */ 151 /* decDoubleFromNumber returns a decimal64 * to avoid warnings. */ 152 #define decDoubleToNumber(dq, dn) decimal64ToNumber((decimal64 *)(dq), dn) 153 #define decDoubleFromNumber(dq, dn, set) decimal64FromNumber((decimal64 *)(dq), dn, set) 154 155 #endif