Mercurial > hg > CbC > CbC_gcc
annotate libdecnumber/decSingle.h @ 145:1830386684a0
gcc-9.2.0
| author | anatofuz |
|---|---|
| date | Thu, 13 Feb 2020 11:34:05 +0900 |
| parents | 84e7813d76e9 |
| children |
| rev | line source |
|---|---|
| 0 | 1 /* decSingle module header for the decNumber C Library. |
| 145 | 2 Copyright (C) 2005-2020 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 /* decSingle.h -- Decimal 32-bit format module header */ | |
| 28 /* ------------------------------------------------------------------ */ | |
| 29 | |
| 30 #if !defined(DECSINGLE) | |
| 31 #define DECSINGLE | |
| 32 | |
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33 #define DECSINGLENAME "decSingle" /* Short name */ |
| 0 | 34 #define DECSINGLETITLE "Decimal 32-bit datum" /* Verbose name */ |
| 35 #define DECSINGLEAUTHOR "Mike Cowlishaw" /* Who to blame */ | |
| 36 | |
| 37 /* parameters for decSingles */ | |
| 38 #define DECSINGLE_Bytes 4 /* length */ | |
| 39 #define DECSINGLE_Pmax 7 /* maximum precision (digits) */ | |
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40 #define DECSINGLE_Emin -95 /* minimum adjusted exponent */ |
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41 #define DECSINGLE_Emax 96 /* maximum adjusted exponent */ |
| 0 | 42 #define DECSINGLE_EmaxD 3 /* maximum exponent digits */ |
| 43 #define DECSINGLE_Bias 101 /* bias for the exponent */ | |
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44 #define DECSINGLE_String 16 /* maximum string length, +1 */ |
| 0 | 45 #define DECSINGLE_EconL 6 /* exponent continuation length */ |
| 46 #define DECSINGLE_Declets 2 /* count of declets */ | |
| 47 /* highest biased exponent (Elimit-1) */ | |
| 48 #define DECSINGLE_Ehigh (DECSINGLE_Emax + DECSINGLE_Bias - (DECSINGLE_Pmax-1)) | |
| 49 | |
| 50 /* Required includes */ | |
| 51 #include "decContext.h" | |
| 52 #include "decQuad.h" | |
| 53 #include "decDouble.h" | |
| 54 | |
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55 /* The decSingle decimal 32-bit type, accessible by all sizes */ |
| 0 | 56 typedef union { |
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57 uint8_t bytes[DECSINGLE_Bytes]; /* fields: 1, 5, 6, 20 bits */ |
| 0 | 58 uint16_t shorts[DECSINGLE_Bytes/2]; |
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59 uint32_t words[DECSINGLE_Bytes/4]; |
| 0 | 60 } decSingle; |
| 61 | |
| 62 /* ---------------------------------------------------------------- */ | |
| 63 /* Routines -- implemented as decFloat routines in common files */ | |
| 64 /* ---------------------------------------------------------------- */ | |
| 65 | |
| 66 #include "decSingleSymbols.h" | |
| 67 | |
| 68 /* Utilities (binary argument(s) or result, extractors, etc.) */ | |
| 69 extern decSingle * decSingleFromBCD(decSingle *, int32_t, const uint8_t *, int32_t); | |
| 70 extern decSingle * decSingleFromPacked(decSingle *, int32_t, const uint8_t *); | |
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71 extern decSingle * decSingleFromPackedChecked(decSingle *, int32_t, const uint8_t *); |
| 0 | 72 extern decSingle * decSingleFromString(decSingle *, const char *, decContext *); |
| 73 extern decSingle * decSingleFromWider(decSingle *, const decDouble *, decContext *); | |
| 74 extern int32_t decSingleGetCoefficient(const decSingle *, uint8_t *); | |
| 75 extern int32_t decSingleGetExponent(const decSingle *); | |
| 76 extern decSingle * decSingleSetCoefficient(decSingle *, const uint8_t *, int32_t); | |
| 77 extern decSingle * decSingleSetExponent(decSingle *, decContext *, int32_t); | |
| 78 extern void decSingleShow(const decSingle *, const char *); | |
| 79 extern int32_t decSingleToBCD(const decSingle *, int32_t *, uint8_t *); | |
| 80 extern char * decSingleToEngString(const decSingle *, char *); | |
| 81 extern int32_t decSingleToPacked(const decSingle *, int32_t *, uint8_t *); | |
| 82 extern char * decSingleToString(const decSingle *, char *); | |
| 83 extern decDouble * decSingleToWider(const decSingle *, decDouble *); | |
| 84 extern decSingle * decSingleZero(decSingle *); | |
| 85 | |
| 86 /* (No Arithmetic routines for decSingle) */ | |
| 87 | |
| 88 /* Non-computational */ | |
| 89 extern uint32_t decSingleRadix(const decSingle *); | |
| 90 extern const char * decSingleVersion(void); | |
| 91 | |
| 92 /* decNumber conversions; these are implemented as macros so as not */ | |
| 93 /* to force a dependency on decimal32 and decNumber in decSingle. */ | |
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94 /* decSingleFromNumber returns a decimal32 * to avoid warnings. */ |
| 0 | 95 #define decSingleToNumber(dq, dn) decimal32ToNumber((decimal32 *)(dq), dn) |
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96 #define decSingleFromNumber(dq, dn, set) decimal32FromNumber((decimal32 *)(dq), dn, set) |
| 0 | 97 |
| 98 #endif |