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[thirdparty/gcc.git] / libdecnumber / decDouble.h
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c8ac5d9a 1/* decDouble module header for the decNumber C Library.
fbd26352 2 Copyright (C) 2007-2019 Free Software Foundation, Inc.
c8ac5d9a 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
6bc9506f 9 Software Foundation; either version 3, or (at your option) any later
c8ac5d9a 10 version.
11
c8ac5d9a 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
6bc9506f 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/>. */
c8ac5d9a 25
26/* ------------------------------------------------------------------ */
27/* decDouble.h -- Decimal 64-bit format module header */
28/* ------------------------------------------------------------------ */
c8ac5d9a 29
30#if !defined(DECDOUBLE)
31 #define DECDOUBLE
32
f3b943d0 33 #define DECDOUBLENAME "decimalDouble" /* Short name */
c8ac5d9a 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) */
f3b943d0 40 #define DECDOUBLE_Emin -383 /* minimum adjusted exponent */
41 #define DECDOUBLE_Emax 384 /* maximum adjusted exponent */
c8ac5d9a 42 #define DECDOUBLE_EmaxD 3 /* maximum exponent digits */
f3b943d0 43 #define DECDOUBLE_Bias 398 /* bias for the exponent */
44 #define DECDOUBLE_String 25 /* maximum string length, +1 */
c8ac5d9a 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
f3b943d0 54 /* The decDouble decimal 64-bit type, accessible by all sizes */
67da83cb 55 typedef union {
f3b943d0 56 uint8_t bytes[DECDOUBLE_Bytes]; /* fields: 1, 5, 8, 50 bits */
67da83cb 57 uint16_t shorts[DECDOUBLE_Bytes/2];
f3b943d0 58 uint32_t words[DECDOUBLE_Bytes/4];
59 #if DECUSE64
60 uint64_t longs[DECDOUBLE_Bytes/8];
61 #endif
c8ac5d9a 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 *);
f3b943d0 74 extern decDouble * decDoubleFromPackedChecked(decDouble *, int32_t, const uint8_t *);
c8ac5d9a 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. */
f3b943d0 160 /* decDoubleFromNumber returns a decimal64 * to avoid warnings. */
c8ac5d9a 161 #define decDoubleToNumber(dq, dn) decimal64ToNumber((decimal64 *)(dq), dn)
f3b943d0 162 #define decDoubleFromNumber(dq, dn, set) decimal64FromNumber((decimal64 *)(dq), dn, set)
c8ac5d9a 163
164#endif
Mirror of https://gcc.gnu.org/git/gcc.git