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[/] [openrisc/] [tags/] [gnu-src/] [gdb-7.2/] [gdb-7.2-or32-1.0rc1/] [libdecnumber/] [decSingle.h] - Rev 341
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/* decSingle module header for the decNumber C Library. 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 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