| 1 |
731 |
jeremybenn |
/* decSingle module header for the decNumber C Library.
|
| 2 |
|
|
Copyright (C) 2005, 2009 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
|
