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1 | /* decQuad module header for the decNumber C Library. |
2 | Copyright (C) 2007 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 2, or (at your option) any later | |
10 | version. | |
11 | ||
12 | In addition to the permissions in the GNU General Public License, | |
13 | the Free Software Foundation gives you unlimited permission to link | |
14 | the compiled version of this file into combinations with other | |
15 | programs, and to distribute those combinations without any | |
16 | restriction coming from the use of this file. (The General Public | |
17 | License restrictions do apply in other respects; for example, they | |
18 | cover modification of the file, and distribution when not linked | |
19 | into a combine executable.) | |
20 | ||
21 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY | |
22 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
23 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
24 | for more details. | |
25 | ||
26 | You should have received a copy of the GNU General Public License | |
27 | along with GCC; see the file COPYING. If not, write to the Free | |
28 | Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA | |
29 | 02110-1301, USA. */ | |
30 | ||
31 | /* ------------------------------------------------------------------ */ | |
32 | /* decQuad.h -- Decimal 128-bit format module header */ | |
33 | /* ------------------------------------------------------------------ */ | |
34 | /* Please see decFloats.h for an overview and documentation details. */ | |
35 | /* ------------------------------------------------------------------ */ | |
36 | /* This include file is always included by decSingle and decDouble, */ | |
37 | /* and therefore also holds useful constants used by all three. */ | |
38 | ||
39 | #if !defined(DECQUAD) | |
40 | #define DECQUAD | |
41 | ||
42 | #define DECQUADNAME "decimalQuad" /* Short name */ | |
43 | #define DECQUADTITLE "Decimal 128-bit datum" /* Verbose name */ | |
44 | #define DECQUADAUTHOR "Mike Cowlishaw" /* Who to blame */ | |
45 | ||
46 | /* parameters for decQuads */ | |
47 | #define DECQUAD_Bytes 16 /* length */ | |
48 | #define DECQUAD_Pmax 34 /* maximum precision (digits) */ | |
49 | #define DECQUAD_Emin -6143 /* minimum adjusted exponent */ | |
50 | #define DECQUAD_Emax 6144 /* maximum adjusted exponent */ | |
51 | #define DECQUAD_EmaxD 4 /* maximum exponent digits */ | |
52 | #define DECQUAD_Bias 6176 /* bias for the exponent */ | |
53 | #define DECQUAD_String 43 /* maximum string length, +1 */ | |
54 | #define DECQUAD_EconL 12 /* exponent continuation length */ | |
55 | #define DECQUAD_Declets 11 /* count of declets */ | |
56 | /* highest biased exponent (Elimit-1) */ | |
57 | #define DECQUAD_Ehigh (DECQUAD_Emax + DECQUAD_Bias - (DECQUAD_Pmax-1)) | |
58 | ||
59 | /* Required include */ | |
60 | #include "decContext.h" | |
61 | ||
62 | /* The decQuad decimal 128-bit type, accessible by bytes */ | |
63 | typedef struct { | |
64 | uint8_t bytes[DECQUAD_Bytes]; /* fields: 1, 5, 12, 110 bits */ | |
65 | } decQuad; | |
66 | ||
67 | /* ---------------------------------------------------------------- */ | |
68 | /* Shared constants */ | |
69 | /* ---------------------------------------------------------------- */ | |
70 | ||
71 | /* sign and special values [top 32-bits; last two bits are don't-care | |
72 | for Infinity on input, last bit don't-care for NaNs] */ | |
73 | #define DECFLOAT_Sign 0x80000000 /* 1 00000 00 Sign */ | |
74 | #define DECFLOAT_NaN 0x7c000000 /* 0 11111 00 NaN generic */ | |
75 | #define DECFLOAT_qNaN 0x7c000000 /* 0 11111 00 qNaN */ | |
76 | #define DECFLOAT_sNaN 0x7e000000 /* 0 11111 10 sNaN */ | |
77 | #define DECFLOAT_Inf 0x78000000 /* 0 11110 00 Infinity */ | |
78 | #define DECFLOAT_MinSp 0x78000000 /* minimum special value */ | |
79 | /* [specials are all >=MinSp] */ | |
80 | /* Sign nibble constants */ | |
81 | #if !defined(DECPPLUSALT) | |
82 | #define DECPPLUSALT 0x0A /* alternate plus nibble */ | |
83 | #define DECPMINUSALT 0x0B /* alternate minus nibble */ | |
84 | #define DECPPLUS 0x0C /* preferred plus nibble */ | |
85 | #define DECPMINUS 0x0D /* preferred minus nibble */ | |
86 | #define DECPPLUSALT2 0x0E /* alternate plus nibble */ | |
87 | #define DECPUNSIGNED 0x0F /* alternate plus nibble (unsigned) */ | |
88 | #endif | |
89 | ||
90 | /* ---------------------------------------------------------------- */ | |
91 | /* Routines -- implemented as decFloat routines in common files */ | |
92 | /* ---------------------------------------------------------------- */ | |
93 | ||
94 | #include "decQuadSymbols.h" | |
95 | ||
96 | /* Utilities and conversions, extractors, etc.) */ | |
97 | extern decQuad * decQuadFromBCD(decQuad *, int32_t, const uint8_t *, int32_t); | |
98 | extern decQuad * decQuadFromInt32(decQuad *, int32_t); | |
99 | extern decQuad * decQuadFromPacked(decQuad *, int32_t, const uint8_t *); | |
100 | extern decQuad * decQuadFromString(decQuad *, const char *, decContext *); | |
101 | extern decQuad * decQuadFromUInt32(decQuad *, uint32_t); | |
102 | extern int32_t decQuadGetCoefficient(const decQuad *, uint8_t *); | |
103 | extern int32_t decQuadGetExponent(const decQuad *); | |
104 | extern decQuad * decQuadSetCoefficient(decQuad *, const uint8_t *, int32_t); | |
105 | extern decQuad * decQuadSetExponent(decQuad *, decContext *, int32_t); | |
106 | extern void decQuadShow(const decQuad *, const char *); | |
107 | extern int32_t decQuadToBCD(const decQuad *, int32_t *, uint8_t *); | |
108 | extern char * decQuadToEngString(const decQuad *, char *); | |
109 | extern int32_t decQuadToInt32(const decQuad *, decContext *, enum rounding); | |
110 | extern int32_t decQuadToInt32Exact(const decQuad *, decContext *, enum rounding); | |
111 | extern int32_t decQuadToPacked(const decQuad *, int32_t *, uint8_t *); | |
112 | extern char * decQuadToString(const decQuad *, char *); | |
113 | extern uint32_t decQuadToUInt32(const decQuad *, decContext *, enum rounding); | |
114 | extern uint32_t decQuadToUInt32Exact(const decQuad *, decContext *, enum rounding); | |
115 | extern decQuad * decQuadZero(decQuad *); | |
116 | ||
117 | /* Computational (result is a decQuad) */ | |
118 | extern decQuad * decQuadAbs(decQuad *, const decQuad *, decContext *); | |
119 | extern decQuad * decQuadAdd(decQuad *, const decQuad *, const decQuad *, decContext *); | |
120 | extern decQuad * decQuadAnd(decQuad *, const decQuad *, const decQuad *, decContext *); | |
121 | extern decQuad * decQuadDivide(decQuad *, const decQuad *, const decQuad *, decContext *); | |
122 | extern decQuad * decQuadDivideInteger(decQuad *, const decQuad *, const decQuad *, decContext *); | |
123 | extern decQuad * decQuadFMA(decQuad *, const decQuad *, const decQuad *, const decQuad *, decContext *); | |
124 | extern decQuad * decQuadInvert(decQuad *, const decQuad *, decContext *); | |
125 | extern decQuad * decQuadLogB(decQuad *, const decQuad *, decContext *); | |
126 | extern decQuad * decQuadMax(decQuad *, const decQuad *, const decQuad *, decContext *); | |
127 | extern decQuad * decQuadMaxMag(decQuad *, const decQuad *, const decQuad *, decContext *); | |
128 | extern decQuad * decQuadMin(decQuad *, const decQuad *, const decQuad *, decContext *); | |
129 | extern decQuad * decQuadMinMag(decQuad *, const decQuad *, const decQuad *, decContext *); | |
130 | extern decQuad * decQuadMinus(decQuad *, const decQuad *, decContext *); | |
131 | extern decQuad * decQuadMultiply(decQuad *, const decQuad *, const decQuad *, decContext *); | |
132 | extern decQuad * decQuadNextMinus(decQuad *, const decQuad *, decContext *); | |
133 | extern decQuad * decQuadNextPlus(decQuad *, const decQuad *, decContext *); | |
134 | extern decQuad * decQuadNextToward(decQuad *, const decQuad *, const decQuad *, decContext *); | |
135 | extern decQuad * decQuadOr(decQuad *, const decQuad *, const decQuad *, decContext *); | |
136 | extern decQuad * decQuadPlus(decQuad *, const decQuad *, decContext *); | |
137 | extern decQuad * decQuadQuantize(decQuad *, const decQuad *, const decQuad *, decContext *); | |
138 | extern decQuad * decQuadReduce(decQuad *, const decQuad *, decContext *); | |
139 | extern decQuad * decQuadRemainder(decQuad *, const decQuad *, const decQuad *, decContext *); | |
140 | extern decQuad * decQuadRemainderNear(decQuad *, const decQuad *, const decQuad *, decContext *); | |
141 | extern decQuad * decQuadRotate(decQuad *, const decQuad *, const decQuad *, decContext *); | |
142 | extern decQuad * decQuadScaleB(decQuad *, const decQuad *, const decQuad *, decContext *); | |
143 | extern decQuad * decQuadShift(decQuad *, const decQuad *, const decQuad *, decContext *); | |
144 | extern decQuad * decQuadSubtract(decQuad *, const decQuad *, const decQuad *, decContext *); | |
145 | extern decQuad * decQuadToIntegralValue(decQuad *, const decQuad *, decContext *, enum rounding); | |
146 | extern decQuad * decQuadToIntegralExact(decQuad *, const decQuad *, decContext *); | |
147 | extern decQuad * decQuadXor(decQuad *, const decQuad *, const decQuad *, decContext *); | |
148 | ||
149 | /* Comparisons */ | |
150 | extern decQuad * decQuadCompare(decQuad *, const decQuad *, const decQuad *, decContext *); | |
151 | extern decQuad * decQuadCompareSignal(decQuad *, const decQuad *, const decQuad *, decContext *); | |
152 | extern decQuad * decQuadCompareTotal(decQuad *, const decQuad *, const decQuad *); | |
153 | extern decQuad * decQuadCompareTotalMag(decQuad *, const decQuad *, const decQuad *); | |
154 | ||
155 | /* Copies */ | |
156 | extern decQuad * decQuadCanonical(decQuad *, const decQuad *); | |
157 | extern decQuad * decQuadCopy(decQuad *, const decQuad *); | |
158 | extern decQuad * decQuadCopyAbs(decQuad *, const decQuad *); | |
159 | extern decQuad * decQuadCopyNegate(decQuad *, const decQuad *); | |
160 | extern decQuad * decQuadCopySign(decQuad *, const decQuad *, const decQuad *); | |
161 | ||
162 | /* Non-computational */ | |
163 | extern enum decClass decQuadClass(const decQuad *); | |
164 | extern const char * decQuadClassString(const decQuad *); | |
165 | extern uint32_t decQuadDigits(const decQuad *); | |
166 | extern uint32_t decQuadIsCanonical(const decQuad *); | |
167 | extern uint32_t decQuadIsFinite(const decQuad *); | |
168 | extern uint32_t decQuadIsInteger(const decQuad *); | |
169 | extern uint32_t decQuadIsInfinite(const decQuad *); | |
170 | extern uint32_t decQuadIsNaN(const decQuad *); | |
171 | extern uint32_t decQuadIsNormal(const decQuad *); | |
172 | extern uint32_t decQuadIsSignaling(const decQuad *); | |
173 | extern uint32_t decQuadIsSignalling(const decQuad *); | |
174 | extern uint32_t decQuadIsSigned(const decQuad *); | |
175 | extern uint32_t decQuadIsSubnormal(const decQuad *); | |
176 | extern uint32_t decQuadIsZero(const decQuad *); | |
177 | extern uint32_t decQuadRadix(const decQuad *); | |
178 | extern uint32_t decQuadSameQuantum(const decQuad *, const decQuad *); | |
179 | extern const char * decQuadVersion(void); | |
180 | ||
181 | /* decNumber conversions; these are implemented as macros so as not */ | |
182 | /* to force a dependency on decimal128 and decNumber in decQuad. */ | |
183 | #define decQuadToNumber(dq, dn) decimal128ToNumber((decimal128 *)(dq), dn) | |
184 | #define decQuadFromNumber(dq, dn, set) (decQuad *)decimal128FromNumber((decimal128 *)(dq), dn, set) | |
185 | ||
186 | #endif |