| 1 | /* decSingle module header for the decNumber C Library. |
| 2 | Copyright (C) 2005-2013 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 | /* decSingle.h -- Decimal 32-bit format module header */ |
| 28 | /* ------------------------------------------------------------------ */ |
| 29 | |
| 30 | #if !defined(DECSINGLE) |
| 31 | #define DECSINGLE |
| 32 | |
| 33 | #define DECSINGLENAME "decSingle" /* Short name */ |
| 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) */ |
| 40 | #define DECSINGLE_Emin -95 /* minimum adjusted exponent */ |
| 41 | #define DECSINGLE_Emax 96 /* maximum adjusted exponent */ |
| 42 | #define DECSINGLE_EmaxD 3 /* maximum exponent digits */ |
| 43 | #define DECSINGLE_Bias 101 /* bias for the exponent */ |
| 44 | #define DECSINGLE_String 16 /* maximum string length, +1 */ |
| 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 | |
| 55 | /* The decSingle decimal 32-bit type, accessible by all sizes */ |
| 56 | typedef union { |
| 57 | uint8_t bytes[DECSINGLE_Bytes]; /* fields: 1, 5, 6, 20 bits */ |
| 58 | uint16_t shorts[DECSINGLE_Bytes/2]; |
| 59 | uint32_t words[DECSINGLE_Bytes/4]; |
| 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 *); |
| 71 | extern decSingle * decSingleFromPackedChecked(decSingle *, int32_t, const uint8_t *); |
| 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. */ |
| 94 | /* decSingleFromNumber returns a decimal32 * to avoid warnings. */ |
| 95 | #define decSingleToNumber(dq, dn) decimal32ToNumber((decimal32 *)(dq), dn) |
| 96 | #define decSingleFromNumber(dq, dn, set) decimal32FromNumber((decimal32 *)(dq), dn, set) |
| 97 | |
| 98 | #endif |