projects / deliverable / binutils-gdb.git / blame
| Commit | Line | Data |
|---|---|---|
| f5bc1778 | 1 | /* decSingle module header for the decNumber C Library. |
| f57a3bca | 2 | Copyright (C) 2005-2018 Free Software Foundation, Inc. |
| f5bc1778 DJ |
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 | |
| 168a2f77 | 9 | Software Foundation; either version 3, or (at your option) any later |
| f5bc1778 DJ |
10 | version. |
| 11 | ||
| f5bc1778 DJ |
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 | ||
| 168a2f77 DD |
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/>. */ | |
| f5bc1778 DJ |
25 | |
| 26 | /* ------------------------------------------------------------------ */ | |
| 27 | /* decSingle.h -- Decimal 32-bit format module header */ | |
| 28 | /* ------------------------------------------------------------------ */ | |
| f5bc1778 DJ |
29 | |
| 30 | #if !defined(DECSINGLE) | |
| 31 | #define DECSINGLE | |
| 32 | ||
| 87d32bb7 | 33 | #define DECSINGLENAME "decSingle" /* Short name */ |
| f5bc1778 DJ |
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) */ | |
| 87d32bb7 DD |
40 | #define DECSINGLE_Emin -95 /* minimum adjusted exponent */ |
| 41 | #define DECSINGLE_Emax 96 /* maximum adjusted exponent */ | |
| f5bc1778 DJ |
42 | #define DECSINGLE_EmaxD 3 /* maximum exponent digits */ |
| 43 | #define DECSINGLE_Bias 101 /* bias for the exponent */ | |
| 87d32bb7 | 44 | #define DECSINGLE_String 16 /* maximum string length, +1 */ |
| f5bc1778 DJ |
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 | ||
| 87d32bb7 | 55 | /* The decSingle decimal 32-bit type, accessible by all sizes */ |
| aed1add3 | 56 | typedef union { |
| 87d32bb7 | 57 | uint8_t bytes[DECSINGLE_Bytes]; /* fields: 1, 5, 6, 20 bits */ |
| aed1add3 | 58 | uint16_t shorts[DECSINGLE_Bytes/2]; |
| 87d32bb7 | 59 | uint32_t words[DECSINGLE_Bytes/4]; |
| f5bc1778 DJ |
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 *); | |
| 87d32bb7 | 71 | extern decSingle * decSingleFromPackedChecked(decSingle *, int32_t, const uint8_t *); |
| f5bc1778 DJ |
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. */ | |
| 87d32bb7 | 94 | /* decSingleFromNumber returns a decimal32 * to avoid warnings. */ |
| f5bc1778 | 95 | #define decSingleToNumber(dq, dn) decimal32ToNumber((decimal32 *)(dq), dn) |
| 87d32bb7 | 96 | #define decSingleFromNumber(dq, dn, set) decimal32FromNumber((decimal32 *)(dq), dn, set) |
| f5bc1778 DJ |
97 | |
| 98 | #endif |