Mercurial > hg > CbC > CbC_gcc
comparison libdecnumber/decDouble.h @ 0:a06113de4d67
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author | kent <kent@cr.ie.u-ryukyu.ac.jp> |
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date | Fri, 17 Jul 2009 14:47:48 +0900 |
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children | 77e2b8dfacca |
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1 /* decDouble module header for the decNumber C Library. | |
2 Copyright (C) 2007, 2009 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 | |
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 /* decDouble.h -- Decimal 64-bit format module header */ | |
28 /* ------------------------------------------------------------------ */ | |
29 /* Please see decFloats.h for an overview and documentation details. */ | |
30 /* ------------------------------------------------------------------ */ | |
31 | |
32 #if !defined(DECDOUBLE) | |
33 #define DECDOUBLE | |
34 | |
35 #define DECDOUBLENAME "decimalDouble" /* Short name */ | |
36 #define DECDOUBLETITLE "Decimal 64-bit datum" /* Verbose name */ | |
37 #define DECDOUBLEAUTHOR "Mike Cowlishaw" /* Who to blame */ | |
38 | |
39 /* parameters for decDoubles */ | |
40 #define DECDOUBLE_Bytes 8 /* length */ | |
41 #define DECDOUBLE_Pmax 16 /* maximum precision (digits) */ | |
42 #define DECDOUBLE_Emin -383 /* minimum adjusted exponent */ | |
43 #define DECDOUBLE_Emax 384 /* maximum adjusted exponent */ | |
44 #define DECDOUBLE_EmaxD 3 /* maximum exponent digits */ | |
45 #define DECDOUBLE_Bias 398 /* bias for the exponent */ | |
46 #define DECDOUBLE_String 25 /* maximum string length, +1 */ | |
47 #define DECDOUBLE_EconL 8 /* exponent continuation length */ | |
48 #define DECDOUBLE_Declets 5 /* count of declets */ | |
49 /* highest biased exponent (Elimit-1) */ | |
50 #define DECDOUBLE_Ehigh (DECDOUBLE_Emax + DECDOUBLE_Bias - (DECDOUBLE_Pmax-1)) | |
51 | |
52 /* Required includes */ | |
53 #include "decContext.h" | |
54 #include "decQuad.h" | |
55 | |
56 /* The decDouble decimal 64-bit type, accessible by various types */ | |
57 typedef union { | |
58 uint8_t bytes[DECDOUBLE_Bytes]; /* fields: 1, 5, 8, 50 bits */ | |
59 uint16_t shorts[DECDOUBLE_Bytes/2]; | |
60 uint32_t words[DECDOUBLE_Bytes/4]; | |
61 } decDouble; | |
62 | |
63 /* ---------------------------------------------------------------- */ | |
64 /* Routines -- implemented as decFloat routines in common files */ | |
65 /* ---------------------------------------------------------------- */ | |
66 | |
67 #include "decDoubleSymbols.h" | |
68 | |
69 /* Utilities and conversions, extractors, etc.) */ | |
70 extern decDouble * decDoubleFromBCD(decDouble *, int32_t, const uint8_t *, int32_t); | |
71 extern decDouble * decDoubleFromInt32(decDouble *, int32_t); | |
72 extern decDouble * decDoubleFromPacked(decDouble *, int32_t, const uint8_t *); | |
73 extern decDouble * decDoubleFromString(decDouble *, const char *, decContext *); | |
74 extern decDouble * decDoubleFromUInt32(decDouble *, uint32_t); | |
75 extern decDouble * decDoubleFromWider(decDouble *, const decQuad *, decContext *); | |
76 extern int32_t decDoubleGetCoefficient(const decDouble *, uint8_t *); | |
77 extern int32_t decDoubleGetExponent(const decDouble *); | |
78 extern decDouble * decDoubleSetCoefficient(decDouble *, const uint8_t *, int32_t); | |
79 extern decDouble * decDoubleSetExponent(decDouble *, decContext *, int32_t); | |
80 extern void decDoubleShow(const decDouble *, const char *); | |
81 extern int32_t decDoubleToBCD(const decDouble *, int32_t *, uint8_t *); | |
82 extern char * decDoubleToEngString(const decDouble *, char *); | |
83 extern int32_t decDoubleToInt32(const decDouble *, decContext *, enum rounding); | |
84 extern int32_t decDoubleToInt32Exact(const decDouble *, decContext *, enum rounding); | |
85 extern int32_t decDoubleToPacked(const decDouble *, int32_t *, uint8_t *); | |
86 extern char * decDoubleToString(const decDouble *, char *); | |
87 extern uint32_t decDoubleToUInt32(const decDouble *, decContext *, enum rounding); | |
88 extern uint32_t decDoubleToUInt32Exact(const decDouble *, decContext *, enum rounding); | |
89 extern decQuad * decDoubleToWider(const decDouble *, decQuad *); | |
90 extern decDouble * decDoubleZero(decDouble *); | |
91 | |
92 /* Computational (result is a decDouble) */ | |
93 extern decDouble * decDoubleAbs(decDouble *, const decDouble *, decContext *); | |
94 extern decDouble * decDoubleAdd(decDouble *, const decDouble *, const decDouble *, decContext *); | |
95 extern decDouble * decDoubleAnd(decDouble *, const decDouble *, const decDouble *, decContext *); | |
96 extern decDouble * decDoubleDivide(decDouble *, const decDouble *, const decDouble *, decContext *); | |
97 extern decDouble * decDoubleDivideInteger(decDouble *, const decDouble *, const decDouble *, decContext *); | |
98 extern decDouble * decDoubleFMA(decDouble *, const decDouble *, const decDouble *, const decDouble *, decContext *); | |
99 extern decDouble * decDoubleInvert(decDouble *, const decDouble *, decContext *); | |
100 extern decDouble * decDoubleLogB(decDouble *, const decDouble *, decContext *); | |
101 extern decDouble * decDoubleMax(decDouble *, const decDouble *, const decDouble *, decContext *); | |
102 extern decDouble * decDoubleMaxMag(decDouble *, const decDouble *, const decDouble *, decContext *); | |
103 extern decDouble * decDoubleMin(decDouble *, const decDouble *, const decDouble *, decContext *); | |
104 extern decDouble * decDoubleMinMag(decDouble *, const decDouble *, const decDouble *, decContext *); | |
105 extern decDouble * decDoubleMinus(decDouble *, const decDouble *, decContext *); | |
106 extern decDouble * decDoubleMultiply(decDouble *, const decDouble *, const decDouble *, decContext *); | |
107 extern decDouble * decDoubleNextMinus(decDouble *, const decDouble *, decContext *); | |
108 extern decDouble * decDoubleNextPlus(decDouble *, const decDouble *, decContext *); | |
109 extern decDouble * decDoubleNextToward(decDouble *, const decDouble *, const decDouble *, decContext *); | |
110 extern decDouble * decDoubleOr(decDouble *, const decDouble *, const decDouble *, decContext *); | |
111 extern decDouble * decDoublePlus(decDouble *, const decDouble *, decContext *); | |
112 extern decDouble * decDoubleQuantize(decDouble *, const decDouble *, const decDouble *, decContext *); | |
113 extern decDouble * decDoubleReduce(decDouble *, const decDouble *, decContext *); | |
114 extern decDouble * decDoubleRemainder(decDouble *, const decDouble *, const decDouble *, decContext *); | |
115 extern decDouble * decDoubleRemainderNear(decDouble *, const decDouble *, const decDouble *, decContext *); | |
116 extern decDouble * decDoubleRotate(decDouble *, const decDouble *, const decDouble *, decContext *); | |
117 extern decDouble * decDoubleScaleB(decDouble *, const decDouble *, const decDouble *, decContext *); | |
118 extern decDouble * decDoubleShift(decDouble *, const decDouble *, const decDouble *, decContext *); | |
119 extern decDouble * decDoubleSubtract(decDouble *, const decDouble *, const decDouble *, decContext *); | |
120 extern decDouble * decDoubleToIntegralValue(decDouble *, const decDouble *, decContext *, enum rounding); | |
121 extern decDouble * decDoubleToIntegralExact(decDouble *, const decDouble *, decContext *); | |
122 extern decDouble * decDoubleXor(decDouble *, const decDouble *, const decDouble *, decContext *); | |
123 | |
124 /* Comparisons */ | |
125 extern decDouble * decDoubleCompare(decDouble *, const decDouble *, const decDouble *, decContext *); | |
126 extern decDouble * decDoubleCompareSignal(decDouble *, const decDouble *, const decDouble *, decContext *); | |
127 extern decDouble * decDoubleCompareTotal(decDouble *, const decDouble *, const decDouble *); | |
128 extern decDouble * decDoubleCompareTotalMag(decDouble *, const decDouble *, const decDouble *); | |
129 | |
130 /* Copies */ | |
131 extern decDouble * decDoubleCanonical(decDouble *, const decDouble *); | |
132 extern decDouble * decDoubleCopy(decDouble *, const decDouble *); | |
133 extern decDouble * decDoubleCopyAbs(decDouble *, const decDouble *); | |
134 extern decDouble * decDoubleCopyNegate(decDouble *, const decDouble *); | |
135 extern decDouble * decDoubleCopySign(decDouble *, const decDouble *, const decDouble *); | |
136 | |
137 /* Non-computational */ | |
138 extern enum decClass decDoubleClass(const decDouble *); | |
139 extern const char * decDoubleClassString(const decDouble *); | |
140 extern uint32_t decDoubleDigits(const decDouble *); | |
141 extern uint32_t decDoubleIsCanonical(const decDouble *); | |
142 extern uint32_t decDoubleIsFinite(const decDouble *); | |
143 extern uint32_t decDoubleIsInfinite(const decDouble *); | |
144 extern uint32_t decDoubleIsInteger(const decDouble *); | |
145 extern uint32_t decDoubleIsNaN(const decDouble *); | |
146 extern uint32_t decDoubleIsNormal(const decDouble *); | |
147 extern uint32_t decDoubleIsSignaling(const decDouble *); | |
148 extern uint32_t decDoubleIsSignalling(const decDouble *); | |
149 extern uint32_t decDoubleIsSigned(const decDouble *); | |
150 extern uint32_t decDoubleIsSubnormal(const decDouble *); | |
151 extern uint32_t decDoubleIsZero(const decDouble *); | |
152 extern uint32_t decDoubleRadix(const decDouble *); | |
153 extern uint32_t decDoubleSameQuantum(const decDouble *, const decDouble *); | |
154 extern const char * decDoubleVersion(void); | |
155 | |
156 /* decNumber conversions; these are implemented as macros so as not */ | |
157 /* to force a dependency on decimal64 and decNumber in decDouble. */ | |
158 #define decDoubleToNumber(dq, dn) decimal64ToNumber((decimal64 *)(dq), dn) | |
159 #define decDoubleFromNumber(dq, dn, set) (decDouble *)decimal64FromNumber((decimal64 *)(dq), dn, set) | |
160 | |
161 #endif |