| /* decSingle module header for the decNumber C Library. |
| Copyright (C) 2005-2022 Free Software Foundation, Inc. |
| Contributed by IBM Corporation. Author Mike Cowlishaw. |
| |
| This file is part of GCC. |
| |
| GCC is free software; you can redistribute it and/or modify it under |
| the terms of the GNU General Public License as published by the Free |
| Software Foundation; either version 3, or (at your option) any later |
| version. |
| |
| GCC is distributed in the hope that it will be useful, but WITHOUT ANY |
| WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| for more details. |
| |
| Under Section 7 of GPL version 3, you are granted additional |
| permissions described in the GCC Runtime Library Exception, version |
| 3.1, as published by the Free Software Foundation. |
| |
| You should have received a copy of the GNU General Public License and |
| a copy of the GCC Runtime Library Exception along with this program; |
| see the files COPYING3 and COPYING.RUNTIME respectively. If not, see |
| <http://www.gnu.org/licenses/>. */ |
| |
| /* ------------------------------------------------------------------ */ |
| /* decSingle.h -- Decimal 32-bit format module header */ |
| /* ------------------------------------------------------------------ */ |
| |
| #if !defined(DECSINGLE) |
| #define DECSINGLE |
| |
| #define DECSINGLENAME "decSingle" /* Short name */ |
| #define DECSINGLETITLE "Decimal 32-bit datum" /* Verbose name */ |
| #define DECSINGLEAUTHOR "Mike Cowlishaw" /* Who to blame */ |
| |
| /* parameters for decSingles */ |
| #define DECSINGLE_Bytes 4 /* length */ |
| #define DECSINGLE_Pmax 7 /* maximum precision (digits) */ |
| #define DECSINGLE_Emin -95 /* minimum adjusted exponent */ |
| #define DECSINGLE_Emax 96 /* maximum adjusted exponent */ |
| #define DECSINGLE_EmaxD 3 /* maximum exponent digits */ |
| #define DECSINGLE_Bias 101 /* bias for the exponent */ |
| #define DECSINGLE_String 16 /* maximum string length, +1 */ |
| #define DECSINGLE_EconL 6 /* exponent continuation length */ |
| #define DECSINGLE_Declets 2 /* count of declets */ |
| /* highest biased exponent (Elimit-1) */ |
| #define DECSINGLE_Ehigh (DECSINGLE_Emax + DECSINGLE_Bias - (DECSINGLE_Pmax-1)) |
| |
| /* Required includes */ |
| #include "decContext.h" |
| #include "decQuad.h" |
| #include "decDouble.h" |
| |
| /* The decSingle decimal 32-bit type, accessible by all sizes */ |
| typedef union { |
| uint8_t bytes[DECSINGLE_Bytes]; /* fields: 1, 5, 6, 20 bits */ |
| uint16_t shorts[DECSINGLE_Bytes/2]; |
| uint32_t words[DECSINGLE_Bytes/4]; |
| } decSingle; |
| |
| /* ---------------------------------------------------------------- */ |
| /* Routines -- implemented as decFloat routines in common files */ |
| /* ---------------------------------------------------------------- */ |
| |
| #include "decSingleSymbols.h" |
| |
| /* Utilities (binary argument(s) or result, extractors, etc.) */ |
| extern decSingle * decSingleFromBCD(decSingle *, int32_t, const uint8_t *, int32_t); |
| extern decSingle * decSingleFromPacked(decSingle *, int32_t, const uint8_t *); |
| extern decSingle * decSingleFromPackedChecked(decSingle *, int32_t, const uint8_t *); |
| extern decSingle * decSingleFromString(decSingle *, const char *, decContext *); |
| extern decSingle * decSingleFromWider(decSingle *, const decDouble *, decContext *); |
| extern int32_t decSingleGetCoefficient(const decSingle *, uint8_t *); |
| extern int32_t decSingleGetExponent(const decSingle *); |
| extern decSingle * decSingleSetCoefficient(decSingle *, const uint8_t *, int32_t); |
| extern decSingle * decSingleSetExponent(decSingle *, decContext *, int32_t); |
| extern void decSingleShow(const decSingle *, const char *); |
| extern int32_t decSingleToBCD(const decSingle *, int32_t *, uint8_t *); |
| extern char * decSingleToEngString(const decSingle *, char *); |
| extern int32_t decSingleToPacked(const decSingle *, int32_t *, uint8_t *); |
| extern char * decSingleToString(const decSingle *, char *); |
| extern decDouble * decSingleToWider(const decSingle *, decDouble *); |
| extern decSingle * decSingleZero(decSingle *); |
| |
| /* (No Arithmetic routines for decSingle) */ |
| |
| /* Non-computational */ |
| extern uint32_t decSingleRadix(const decSingle *); |
| extern const char * decSingleVersion(void); |
| |
| /* decNumber conversions; these are implemented as macros so as not */ |
| /* to force a dependency on decimal32 and decNumber in decSingle. */ |
| /* decSingleFromNumber returns a decimal32 * to avoid warnings. */ |
| #define decSingleToNumber(dq, dn) decimal32ToNumber((decimal32 *)(dq), dn) |
| #define decSingleFromNumber(dq, dn, set) decimal32FromNumber((decimal32 *)(dq), dn, set) |
| |
| #endif |