Mercurial > hg > CbC > CbC_gcc
annotate libdecnumber/decQuad.h @ 158:494b0b89df80 default tip
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author | Shinji KONO <kono@ie.u-ryukyu.ac.jp> |
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date | Mon, 25 May 2020 18:13:55 +0900 |
parents | 1830386684a0 |
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rev | line source |
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0 | 1 /* decQuad module header for the decNumber C Library. |
145 | 2 Copyright (C) 2007-2020 Free Software Foundation, Inc. |
0 | 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 | |
17 Under Section 7 of GPL version 3, you are granted additional | |
18 permissions described in the GCC Runtime Library Exception, version | |
19 3.1, as published by the Free Software Foundation. | |
20 | |
21 You should have received a copy of the GNU General Public License and | |
22 a copy of the GCC Runtime Library Exception along with this program; | |
23 see 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, */ | |
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30 /* and therefore also holds useful constants used by all three. */ |
0 | 31 |
32 #if !defined(DECQUAD) | |
33 #define DECQUAD | |
34 | |
35 #define DECQUADNAME "decimalQuad" /* Short name */ | |
36 #define DECQUADTITLE "Decimal 128-bit datum" /* Verbose name */ | |
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37 #define DECQUADAUTHOR "Mike Cowlishaw" /* Who to blame */ |
0 | 38 |
39 /* parameters for decQuads */ | |
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40 #define DECQUAD_Bytes 16 /* length */ |
0 | 41 #define DECQUAD_Pmax 34 /* maximum precision (digits) */ |
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42 #define DECQUAD_Emin -6143 /* minimum adjusted exponent */ |
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43 #define DECQUAD_Emax 6144 /* maximum adjusted exponent */ |
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44 #define DECQUAD_EmaxD 4 /* maximum exponent digits */ |
0 | 45 #define DECQUAD_Bias 6176 /* bias for the exponent */ |
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46 #define DECQUAD_String 43 /* maximum string length, +1 */ |
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47 #define DECQUAD_EconL 12 /* exponent continuation length */ |
0 | 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 | |
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55 /* The decQuad decimal 128-bit type, accessible by all sizes */ |
0 | 56 typedef union { |
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57 uint8_t bytes[DECQUAD_Bytes]; /* fields: 1, 5, 12, 110 bits */ |
0 | 58 uint16_t shorts[DECQUAD_Bytes/2]; |
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59 uint32_t words[DECQUAD_Bytes/4]; |
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60 #if DECUSE64 |
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61 uint64_t longs[DECQUAD_Bytes/8]; |
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62 #endif |
0 | 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] */ | |
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71 #define DECFLOAT_Sign 0x80000000 /* 1 00000 00 Sign */ |
0 | 72 #define DECFLOAT_NaN 0x7c000000 /* 0 11111 00 NaN generic */ |
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73 #define DECFLOAT_qNaN 0x7c000000 /* 0 11111 00 qNaN */ |
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74 #define DECFLOAT_sNaN 0x7e000000 /* 0 11111 10 sNaN */ |
0 | 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) | |
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80 #define DECPPLUSALT 0x0A /* alternate plus nibble */ |
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81 #define DECPMINUSALT 0x0B /* alternate minus nibble */ |
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82 #define DECPPLUS 0x0C /* preferred plus nibble */ |
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83 #define DECPMINUS 0x0D /* preferred minus nibble */ |
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84 #define DECPPLUSALT2 0x0E /* alternate plus nibble */ |
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85 #define DECPUNSIGNED 0x0F /* alternate plus nibble (unsigned) */ |
0 | 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 *); | |
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98 extern decQuad * decQuadFromPackedChecked(decQuad *, int32_t, const uint8_t *); |
0 | 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. */ | |
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182 /* decQuadFromNumber returns a decimal128 * to avoid warnings. */ |
0 | 183 #define decQuadToNumber(dq, dn) decimal128ToNumber((decimal128 *)(dq), dn) |
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184 #define decQuadFromNumber(dq, dn, set) decimal128FromNumber((decimal128 *)(dq), dn, set) |
0 | 185 |
186 #endif |