1/* decQuad 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/* decQuad.h -- Decimal 128-bit format module header */ 28/* ------------------------------------------------------------------ */ 29/* This include file is always included by decSingle and decDouble, */ 30/* and therefore also holds useful constants used by all three. */ 31 32#if !defined(DECQUAD) 33 #define DECQUAD 34 35 #define DECQUADNAME "decimalQuad" /* Short name */ 36 #define DECQUADTITLE "Decimal 128-bit datum" /* Verbose name */ 37 #define DECQUADAUTHOR "Mike Cowlishaw" /* Who to blame */ 38 39 /* parameters for decQuads */ 40 #define DECQUAD_Bytes 16 /* length */ 41 #define DECQUAD_Pmax 34 /* maximum precision (digits) */ 42 #define DECQUAD_Emin -6143 /* minimum adjusted exponent */ 43 #define DECQUAD_Emax 6144 /* maximum adjusted exponent */ 44 #define DECQUAD_EmaxD 4 /* maximum exponent digits */ 45 #define DECQUAD_Bias 6176 /* bias for the exponent */ 46 #define DECQUAD_String 43 /* maximum string length, +1 */ 47 #define DECQUAD_EconL 12 /* exponent continuation length */ 48 #define DECQUAD_Declets 11 /* count of declets */ 49 /* highest biased exponent (Elimit-1) */ 50 #define DECQUAD_Ehigh (DECQUAD_Emax + DECQUAD_Bias - (DECQUAD_Pmax-1)) 51 52 /* Required include */ 53 #include "decContext.h" 54 55 /* The decQuad decimal 128-bit type, accessible by all sizes */ 56 typedef union { 57 uint8_t bytes[DECQUAD_Bytes]; /* fields: 1, 5, 12, 110 bits */ 58 uint16_t shorts[DECQUAD_Bytes/2]; 59 uint32_t words[DECQUAD_Bytes/4]; 60 #if DECUSE64 61 uint64_t longs[DECQUAD_Bytes/8]; 62 #endif 63 } decQuad; 64 65 /* ---------------------------------------------------------------- */ 66 /* Shared constants */ 67 /* ---------------------------------------------------------------- */ 68 69 /* sign and special values [top 32-bits; last two bits are don't-care 70 for Infinity on input, last bit don't-care for NaNs] */ 71 #define DECFLOAT_Sign 0x80000000 /* 1 00000 00 Sign */ 72 #define DECFLOAT_NaN 0x7c000000 /* 0 11111 00 NaN generic */ 73 #define DECFLOAT_qNaN 0x7c000000 /* 0 11111 00 qNaN */ 74 #define DECFLOAT_sNaN 0x7e000000 /* 0 11111 10 sNaN */ 75 #define DECFLOAT_Inf 0x78000000 /* 0 11110 00 Infinity */ 76 #define DECFLOAT_MinSp 0x78000000 /* minimum special value */ 77 /* [specials are all >=MinSp] */ 78 /* Sign nibble constants */ 79 #if !defined(DECPPLUSALT) 80 #define DECPPLUSALT 0x0A /* alternate plus nibble */ 81 #define DECPMINUSALT 0x0B /* alternate minus nibble */ 82 #define DECPPLUS 0x0C /* preferred plus nibble */ 83 #define DECPMINUS 0x0D /* preferred minus nibble */ 84 #define DECPPLUSALT2 0x0E /* alternate plus nibble */ 85 #define DECPUNSIGNED 0x0F /* alternate plus nibble (unsigned) */ 86 #endif 87 88 /* ---------------------------------------------------------------- */ 89 /* Routines -- implemented as decFloat routines in common files */ 90 /* ---------------------------------------------------------------- */ 91 92 #include "decQuadSymbols.h" 93 94 /* Utilities and conversions, extractors, etc.) */ 95 extern decQuad * decQuadFromBCD(decQuad *, int32_t, const uint8_t *, int32_t); 96 extern decQuad * decQuadFromInt32(decQuad *, int32_t); 97 extern decQuad * decQuadFromPacked(decQuad *, int32_t, const uint8_t *); 98 extern decQuad * decQuadFromPackedChecked(decQuad *, int32_t, const uint8_t *); 99 extern decQuad * decQuadFromString(decQuad *, const char *, decContext *); 100 extern decQuad * decQuadFromUInt32(decQuad *, uint32_t); 101 extern int32_t decQuadGetCoefficient(const decQuad *, uint8_t *); 102 extern int32_t decQuadGetExponent(const decQuad *); 103 extern decQuad * decQuadSetCoefficient(decQuad *, const uint8_t *, int32_t); 104 extern decQuad * decQuadSetExponent(decQuad *, decContext *, int32_t); 105 extern void decQuadShow(const decQuad *, const char *); 106 extern int32_t decQuadToBCD(const decQuad *, int32_t *, uint8_t *); 107 extern char * decQuadToEngString(const decQuad *, char *); 108 extern int32_t decQuadToInt32(const decQuad *, decContext *, enum rounding); 109 extern int32_t decQuadToInt32Exact(const decQuad *, decContext *, enum rounding); 110 extern int32_t decQuadToPacked(const decQuad *, int32_t *, uint8_t *); 111 extern char * decQuadToString(const decQuad *, char *); 112 extern uint32_t decQuadToUInt32(const decQuad *, decContext *, enum rounding); 113 extern uint32_t decQuadToUInt32Exact(const decQuad *, decContext *, enum rounding); 114 extern decQuad * decQuadZero(decQuad *); 115 116 /* Computational (result is a decQuad) */ 117 extern decQuad * decQuadAbs(decQuad *, const decQuad *, decContext *); 118 extern decQuad * decQuadAdd(decQuad *, const decQuad *, const decQuad *, decContext *); 119 extern decQuad * decQuadAnd(decQuad *, const decQuad *, const decQuad *, decContext *); 120 extern decQuad * decQuadDivide(decQuad *, const decQuad *, const decQuad *, decContext *); 121 extern decQuad * decQuadDivideInteger(decQuad *, const decQuad *, const decQuad *, decContext *); 122 extern decQuad * decQuadFMA(decQuad *, const decQuad *, const decQuad *, const decQuad *, decContext *); 123 extern decQuad * decQuadInvert(decQuad *, const decQuad *, decContext *); 124 extern decQuad * decQuadLogB(decQuad *, const decQuad *, decContext *); 125 extern decQuad * decQuadMax(decQuad *, const decQuad *, const decQuad *, decContext *); 126 extern decQuad * decQuadMaxMag(decQuad *, const decQuad *, const decQuad *, decContext *); 127 extern decQuad * decQuadMin(decQuad *, const decQuad *, const decQuad *, decContext *); 128 extern decQuad * decQuadMinMag(decQuad *, const decQuad *, const decQuad *, decContext *); 129 extern decQuad * decQuadMinus(decQuad *, const decQuad *, decContext *); 130 extern decQuad * decQuadMultiply(decQuad *, const decQuad *, const decQuad *, decContext *); 131 extern decQuad * decQuadNextMinus(decQuad *, const decQuad *, decContext *); 132 extern decQuad * decQuadNextPlus(decQuad *, const decQuad *, decContext *); 133 extern decQuad * decQuadNextToward(decQuad *, const decQuad *, const decQuad *, decContext *); 134 extern decQuad * decQuadOr(decQuad *, const decQuad *, const decQuad *, decContext *); 135 extern decQuad * decQuadPlus(decQuad *, const decQuad *, decContext *); 136 extern decQuad * decQuadQuantize(decQuad *, const decQuad *, const decQuad *, decContext *); 137 extern decQuad * decQuadReduce(decQuad *, const decQuad *, decContext *); 138 extern decQuad * decQuadRemainder(decQuad *, const decQuad *, const decQuad *, decContext *); 139 extern decQuad * decQuadRemainderNear(decQuad *, const decQuad *, const decQuad *, decContext *); 140 extern decQuad * decQuadRotate(decQuad *, const decQuad *, const decQuad *, decContext *); 141 extern decQuad * decQuadScaleB(decQuad *, const decQuad *, const decQuad *, decContext *); 142 extern decQuad * decQuadShift(decQuad *, const decQuad *, const decQuad *, decContext *); 143 extern decQuad * decQuadSubtract(decQuad *, const decQuad *, const decQuad *, decContext *); 144 extern decQuad * decQuadToIntegralValue(decQuad *, const decQuad *, decContext *, enum rounding); 145 extern decQuad * decQuadToIntegralExact(decQuad *, const decQuad *, decContext *); 146 extern decQuad * decQuadXor(decQuad *, const decQuad *, const decQuad *, decContext *); 147 148 /* Comparisons */ 149 extern decQuad * decQuadCompare(decQuad *, const decQuad *, const decQuad *, decContext *); 150 extern decQuad * decQuadCompareSignal(decQuad *, const decQuad *, const decQuad *, decContext *); 151 extern decQuad * decQuadCompareTotal(decQuad *, const decQuad *, const decQuad *); 152 extern decQuad * decQuadCompareTotalMag(decQuad *, const decQuad *, const decQuad *); 153 154 /* Copies */ 155 extern decQuad * decQuadCanonical(decQuad *, const decQuad *); 156 extern decQuad * decQuadCopy(decQuad *, const decQuad *); 157 extern decQuad * decQuadCopyAbs(decQuad *, const decQuad *); 158 extern decQuad * decQuadCopyNegate(decQuad *, const decQuad *); 159 extern decQuad * decQuadCopySign(decQuad *, const decQuad *, const decQuad *); 160 161 /* Non-computational */ 162 extern enum decClass decQuadClass(const decQuad *); 163 extern const char * decQuadClassString(const decQuad *); 164 extern uint32_t decQuadDigits(const decQuad *); 165 extern uint32_t decQuadIsCanonical(const decQuad *); 166 extern uint32_t decQuadIsFinite(const decQuad *); 167 extern uint32_t decQuadIsInteger(const decQuad *); 168 extern uint32_t decQuadIsInfinite(const decQuad *); 169 extern uint32_t decQuadIsNaN(const decQuad *); 170 extern uint32_t decQuadIsNormal(const decQuad *); 171 extern uint32_t decQuadIsSignaling(const decQuad *); 172 extern uint32_t decQuadIsSignalling(const decQuad *); 173 extern uint32_t decQuadIsSigned(const decQuad *); 174 extern uint32_t decQuadIsSubnormal(const decQuad *); 175 extern uint32_t decQuadIsZero(const decQuad *); 176 extern uint32_t decQuadRadix(const decQuad *); 177 extern uint32_t decQuadSameQuantum(const decQuad *, const decQuad *); 178 extern const char * decQuadVersion(void); 179 180 /* decNumber conversions; these are implemented as macros so as not */ 181 /* to force a dependency on decimal128 and decNumber in decQuad. */ 182 /* decQuadFromNumber returns a decimal128 * to avoid warnings. */ 183 #define decQuadToNumber(dq, dn) decimal128ToNumber((decimal128 *)(dq), dn) 184 #define decQuadFromNumber(dq, dn, set) decimal128FromNumber((decimal128 *)(dq), dn, set) 185 186#endif 187