/* decSingle module header for the decNumber C Library.
- Copyright (C) 2005 Free Software Foundation, Inc.
+ Copyright (C) 2005, 2009 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 2, or (at your option) any later
+ Software Foundation; either version 3, or (at your option) any later
version.
- In addition to the permissions in the GNU General Public License,
- the Free Software Foundation gives you unlimited permission to link
- the compiled version of this file into combinations with other
- programs, and to distribute those combinations without any
- restriction coming from the use of this file. (The General Public
- License restrictions do apply in other respects; for example, they
- cover modification of the file, and distribution when not linked
- into a combine executable.)
-
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.
- You should have received a copy of the GNU General Public License
- along with GCC; see the file COPYING. If not, write to the Free
- Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
- 02110-1301, USA. */
+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 */
/* ------------------------------------------------------------------ */
-/* Please see decFloats.h for an overview and documentation details. */
-/* ------------------------------------------------------------------ */
#if !defined(DECSINGLE)
#define DECSINGLE
- #define DECSINGLENAME "decSingle" /* Short name */
+ #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_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_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) */
#include "decQuad.h"
#include "decDouble.h"
- /* The decSingle decimal 32-bit type, accessible by bytes */
- typedef struct {
- uint8_t bytes[DECSINGLE_Bytes]; /* fields: 1, 5, 6, 20 bits */
+ /* 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;
/* ---------------------------------------------------------------- */
/* 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 *);
/* 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) (decSingle *)decimal32FromNumber((decimal32 *)(dq), dn, set)
+ #define decSingleFromNumber(dq, dn, set) decimal32FromNumber((decimal32 *)(dq), dn, set)
#endif
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