1/* decDouble module header for the decNumber C Library. 2 Copyright (C) 2007-2015 Free Software Foundation, Inc. 3 Contributed by IBM Corporation. Author Mike Cowlishaw. 4 5 This file is part of GCC. 6 7 GCC is free software; you can redistribute it and/or modify it under 8 the terms of the GNU General Public License as published by the Free 9 Software Foundation; either version 3, or (at your option) any later 10 version. 11 12 GCC is distributed in the hope that it will be useful, but WITHOUT ANY 13 WARRANTY; without even the implied warranty of MERCHANTABILITY or 14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 15 for more details. 16 17Under Section 7 of GPL version 3, you are granted additional 18permissions described in the GCC Runtime Library Exception, version 193.1, as published by the Free Software Foundation. 20 21You should have received a copy of the GNU General Public License and 22a copy of the GCC Runtime Library Exception along with this program; 23see the files COPYING3 and COPYING.RUNTIME respectively. If not, see 24<http://www.gnu.org/licenses/>. */ 25 26/* ------------------------------------------------------------------ */ 27/* decDouble.h -- Decimal 64-bit format module header */ 28/* ------------------------------------------------------------------ */ 29 30#if !defined(DECDOUBLE) 31 #define DECDOUBLE 32 33 #define DECDOUBLENAME "decimalDouble" /* Short name */ 34 #define DECDOUBLETITLE "Decimal 64-bit datum" /* Verbose name */ 35 #define DECDOUBLEAUTHOR "Mike Cowlishaw" /* Who to blame */ 36 37 /* parameters for decDoubles */ 38 #define DECDOUBLE_Bytes 8 /* length */ 39 #define DECDOUBLE_Pmax 16 /* maximum precision (digits) */ 40 #define DECDOUBLE_Emin -383 /* minimum adjusted exponent */ 41 #define DECDOUBLE_Emax 384 /* maximum adjusted exponent */ 42 #define DECDOUBLE_EmaxD 3 /* maximum exponent digits */ 43 #define DECDOUBLE_Bias 398 /* bias for the exponent */ 44 #define DECDOUBLE_String 25 /* maximum string length, +1 */ 45 #define DECDOUBLE_EconL 8 /* exponent continuation length */ 46 #define DECDOUBLE_Declets 5 /* count of declets */ 47 /* highest biased exponent (Elimit-1) */ 48 #define DECDOUBLE_Ehigh (DECDOUBLE_Emax + DECDOUBLE_Bias - (DECDOUBLE_Pmax-1)) 49 50 /* Required includes */ 51 #include "decContext.h" 52 #include "decQuad.h" 53 54 /* The decDouble decimal 64-bit type, accessible by all sizes */ 55 typedef union { 56 uint8_t bytes[DECDOUBLE_Bytes]; /* fields: 1, 5, 8, 50 bits */ 57 uint16_t shorts[DECDOUBLE_Bytes/2]; 58 uint32_t words[DECDOUBLE_Bytes/4]; 59 #if DECUSE64 60 uint64_t longs[DECDOUBLE_Bytes/8]; 61 #endif 62 } decDouble; 63 64 /* ---------------------------------------------------------------- */ 65 /* Routines -- implemented as decFloat routines in common files */ 66 /* ---------------------------------------------------------------- */ 67 68 #include "decDoubleSymbols.h" 69 70 /* Utilities and conversions, extractors, etc.) */ 71 extern decDouble * decDoubleFromBCD(decDouble *, int32_t, const uint8_t *, int32_t); 72 extern decDouble * decDoubleFromInt32(decDouble *, int32_t); 73 extern decDouble * decDoubleFromPacked(decDouble *, int32_t, const uint8_t *); 74 extern decDouble * decDoubleFromPackedChecked(decDouble *, int32_t, const uint8_t *); 75 extern decDouble * decDoubleFromString(decDouble *, const char *, decContext *); 76 extern decDouble * decDoubleFromUInt32(decDouble *, uint32_t); 77 extern decDouble * decDoubleFromWider(decDouble *, const decQuad *, decContext *); 78 extern int32_t decDoubleGetCoefficient(const decDouble *, uint8_t *); 79 extern int32_t decDoubleGetExponent(const decDouble *); 80 extern decDouble * decDoubleSetCoefficient(decDouble *, const uint8_t *, int32_t); 81 extern decDouble * decDoubleSetExponent(decDouble *, decContext *, int32_t); 82 extern void decDoubleShow(const decDouble *, const char *); 83 extern int32_t decDoubleToBCD(const decDouble *, int32_t *, uint8_t *); 84 extern char * decDoubleToEngString(const decDouble *, char *); 85 extern int32_t decDoubleToInt32(const decDouble *, decContext *, enum rounding); 86 extern int32_t decDoubleToInt32Exact(const decDouble *, decContext *, enum rounding); 87 extern int32_t decDoubleToPacked(const decDouble *, int32_t *, uint8_t *); 88 extern char * decDoubleToString(const decDouble *, char *); 89 extern uint32_t decDoubleToUInt32(const decDouble *, decContext *, enum rounding); 90 extern uint32_t decDoubleToUInt32Exact(const decDouble *, decContext *, enum rounding); 91 extern decQuad * decDoubleToWider(const decDouble *, decQuad *); 92 extern decDouble * decDoubleZero(decDouble *); 93 94 /* Computational (result is a decDouble) */ 95 extern decDouble * decDoubleAbs(decDouble *, const decDouble *, decContext *); 96 extern decDouble * decDoubleAdd(decDouble *, const decDouble *, const decDouble *, decContext *); 97 extern decDouble * decDoubleAnd(decDouble *, const decDouble *, const decDouble *, decContext *); 98 extern decDouble * decDoubleDivide(decDouble *, const decDouble *, const decDouble *, decContext *); 99 extern decDouble * decDoubleDivideInteger(decDouble *, const decDouble *, const decDouble *, decContext *); 100 extern decDouble * decDoubleFMA(decDouble *, const decDouble *, const decDouble *, const decDouble *, decContext *); 101 extern decDouble * decDoubleInvert(decDouble *, const decDouble *, decContext *); 102 extern decDouble * decDoubleLogB(decDouble *, const decDouble *, decContext *); 103 extern decDouble * decDoubleMax(decDouble *, const decDouble *, const decDouble *, decContext *); 104 extern decDouble * decDoubleMaxMag(decDouble *, const decDouble *, const decDouble *, decContext *); 105 extern decDouble * decDoubleMin(decDouble *, const decDouble *, const decDouble *, decContext *); 106 extern decDouble * decDoubleMinMag(decDouble *, const decDouble *, const decDouble *, decContext *); 107 extern decDouble * decDoubleMinus(decDouble *, const decDouble *, decContext *); 108 extern decDouble * decDoubleMultiply(decDouble *, const decDouble *, const decDouble *, decContext *); 109 extern decDouble * decDoubleNextMinus(decDouble *, const decDouble *, decContext *); 110 extern decDouble * decDoubleNextPlus(decDouble *, const decDouble *, decContext *); 111 extern decDouble * decDoubleNextToward(decDouble *, const decDouble *, const decDouble *, decContext *); 112 extern decDouble * decDoubleOr(decDouble *, const decDouble *, const decDouble *, decContext *); 113 extern decDouble * decDoublePlus(decDouble *, const decDouble *, decContext *); 114 extern decDouble * decDoubleQuantize(decDouble *, const decDouble *, const decDouble *, decContext *); 115 extern decDouble * decDoubleReduce(decDouble *, const decDouble *, decContext *); 116 extern decDouble * decDoubleRemainder(decDouble *, const decDouble *, const decDouble *, decContext *); 117 extern decDouble * decDoubleRemainderNear(decDouble *, const decDouble *, const decDouble *, decContext *); 118 extern decDouble * decDoubleRotate(decDouble *, const decDouble *, const decDouble *, decContext *); 119 extern decDouble * decDoubleScaleB(decDouble *, const decDouble *, const decDouble *, decContext *); 120 extern decDouble * decDoubleShift(decDouble *, const decDouble *, const decDouble *, decContext *); 121 extern decDouble * decDoubleSubtract(decDouble *, const decDouble *, const decDouble *, decContext *); 122 extern decDouble * decDoubleToIntegralValue(decDouble *, const decDouble *, decContext *, enum rounding); 123 extern decDouble * decDoubleToIntegralExact(decDouble *, const decDouble *, decContext *); 124 extern decDouble * decDoubleXor(decDouble *, const decDouble *, const decDouble *, decContext *); 125 126 /* Comparisons */ 127 extern decDouble * decDoubleCompare(decDouble *, const decDouble *, const decDouble *, decContext *); 128 extern decDouble * decDoubleCompareSignal(decDouble *, const decDouble *, const decDouble *, decContext *); 129 extern decDouble * decDoubleCompareTotal(decDouble *, const decDouble *, const decDouble *); 130 extern decDouble * decDoubleCompareTotalMag(decDouble *, const decDouble *, const decDouble *); 131 132 /* Copies */ 133 extern decDouble * decDoubleCanonical(decDouble *, const decDouble *); 134 extern decDouble * decDoubleCopy(decDouble *, const decDouble *); 135 extern decDouble * decDoubleCopyAbs(decDouble *, const decDouble *); 136 extern decDouble * decDoubleCopyNegate(decDouble *, const decDouble *); 137 extern decDouble * decDoubleCopySign(decDouble *, const decDouble *, const decDouble *); 138 139 /* Non-computational */ 140 extern enum decClass decDoubleClass(const decDouble *); 141 extern const char * decDoubleClassString(const decDouble *); 142 extern uint32_t decDoubleDigits(const decDouble *); 143 extern uint32_t decDoubleIsCanonical(const decDouble *); 144 extern uint32_t decDoubleIsFinite(const decDouble *); 145 extern uint32_t decDoubleIsInfinite(const decDouble *); 146 extern uint32_t decDoubleIsInteger(const decDouble *); 147 extern uint32_t decDoubleIsNaN(const decDouble *); 148 extern uint32_t decDoubleIsNormal(const decDouble *); 149 extern uint32_t decDoubleIsSignaling(const decDouble *); 150 extern uint32_t decDoubleIsSignalling(const decDouble *); 151 extern uint32_t decDoubleIsSigned(const decDouble *); 152 extern uint32_t decDoubleIsSubnormal(const decDouble *); 153 extern uint32_t decDoubleIsZero(const decDouble *); 154 extern uint32_t decDoubleRadix(const decDouble *); 155 extern uint32_t decDoubleSameQuantum(const decDouble *, const decDouble *); 156 extern const char * decDoubleVersion(void); 157 158 /* decNumber conversions; these are implemented as macros so as not */ 159 /* to force a dependency on decimal64 and decNumber in decDouble. */ 160 /* decDoubleFromNumber returns a decimal64 * to avoid warnings. */ 161 #define decDoubleToNumber(dq, dn) decimal64ToNumber((decimal64 *)(dq), dn) 162 #define decDoubleFromNumber(dq, dn, set) decimal64FromNumber((decimal64 *)(dq), dn, set) 163 164#endif 165