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[/] [openrisc/] [trunk/] [gnu-dev/] [or1k-gcc/] [libdecnumber/] [decSingle.h] - Blame information for rev 749

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1 731 jeremybenn
/* decSingle module header for the decNumber C Library.
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   Copyright (C) 2005, 2009 Free Software Foundation, Inc.
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   Contributed by IBM Corporation.  Author Mike Cowlishaw.
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   This file is part of GCC.
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   GCC is free software; you can redistribute it and/or modify it under
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   the terms of the GNU General Public License as published by the Free
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   Software Foundation; either version 3, or (at your option) any later
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   version.
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   GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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   WARRANTY; without even the implied warranty of MERCHANTABILITY or
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   FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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   for more details.
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Under Section 7 of GPL version 3, you are granted additional
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permissions described in the GCC Runtime Library Exception, version
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3.1, as published by the Free Software Foundation.
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You should have received a copy of the GNU General Public License and
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a copy of the GCC Runtime Library Exception along with this program;
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see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
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<http://www.gnu.org/licenses/>.  */
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/* ------------------------------------------------------------------ */
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/* decSingle.h -- Decimal 32-bit format module header                 */
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/* ------------------------------------------------------------------ */
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#if !defined(DECSINGLE)
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  #define DECSINGLE
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  #define DECSINGLENAME       "decSingle"             /* Short name   */
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  #define DECSINGLETITLE      "Decimal 32-bit datum"  /* Verbose name */
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  #define DECSINGLEAUTHOR     "Mike Cowlishaw"        /* Who to blame */
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  /* parameters for decSingles */
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  #define DECSINGLE_Bytes    4     /* length                          */
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  #define DECSINGLE_Pmax     7     /* maximum precision (digits)      */
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  #define DECSINGLE_Emin   -95     /* minimum adjusted exponent       */
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  #define DECSINGLE_Emax    96     /* maximum adjusted exponent       */
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  #define DECSINGLE_EmaxD    3     /* maximum exponent digits         */
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  #define DECSINGLE_Bias   101     /* bias for the exponent           */
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  #define DECSINGLE_String  16     /* maximum string length, +1       */
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  #define DECSINGLE_EconL    6     /* exponent continuation length    */
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  #define DECSINGLE_Declets  2     /* count of declets                */
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  /* highest biased exponent (Elimit-1) */
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  #define DECSINGLE_Ehigh (DECSINGLE_Emax + DECSINGLE_Bias - (DECSINGLE_Pmax-1))
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  /* Required includes                                                */
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  #include "decContext.h"
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  #include "decQuad.h"
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  #include "decDouble.h"
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  /* The decSingle decimal 32-bit type, accessible by all sizes */
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  typedef union {
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    uint8_t   bytes[DECSINGLE_Bytes];   /* fields: 1, 5, 6, 20 bits */
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    uint16_t shorts[DECSINGLE_Bytes/2];
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    uint32_t  words[DECSINGLE_Bytes/4];
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    } decSingle;
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  /* ---------------------------------------------------------------- */
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  /* Routines -- implemented as decFloat routines in common files     */
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  /* ---------------------------------------------------------------- */
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  #include "decSingleSymbols.h"
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  /* Utilities (binary argument(s) or result, extractors, etc.) */
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  extern decSingle * decSingleFromBCD(decSingle *, int32_t, const uint8_t *, int32_t);
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  extern decSingle * decSingleFromPacked(decSingle *, int32_t, const uint8_t *);
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  extern decSingle * decSingleFromPackedChecked(decSingle *, int32_t, const uint8_t *);
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  extern decSingle * decSingleFromString(decSingle *, const char *, decContext *);
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  extern decSingle * decSingleFromWider(decSingle *, const decDouble *, decContext *);
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  extern int32_t     decSingleGetCoefficient(const decSingle *, uint8_t *);
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  extern int32_t     decSingleGetExponent(const decSingle *);
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  extern decSingle * decSingleSetCoefficient(decSingle *, const uint8_t *, int32_t);
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  extern decSingle * decSingleSetExponent(decSingle *, decContext *, int32_t);
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  extern void        decSingleShow(const decSingle *, const char *);
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  extern int32_t     decSingleToBCD(const decSingle *, int32_t *, uint8_t *);
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  extern char      * decSingleToEngString(const decSingle *, char *);
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  extern int32_t     decSingleToPacked(const decSingle *, int32_t *, uint8_t *);
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  extern char      * decSingleToString(const decSingle *, char *);
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  extern decDouble * decSingleToWider(const decSingle *, decDouble *);
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  extern decSingle * decSingleZero(decSingle *);
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  /* (No Arithmetic routines for decSingle) */
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  /* Non-computational */
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  extern uint32_t     decSingleRadix(const decSingle *);
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  extern const char * decSingleVersion(void);
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  /* decNumber conversions; these are implemented as macros so as not  */
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  /* to force a dependency on decimal32 and decNumber in decSingle.    */
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  /* decSingleFromNumber returns a decimal32 * to avoid warnings.      */
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  #define decSingleToNumber(dq, dn) decimal32ToNumber((decimal32 *)(dq), dn)
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  #define decSingleFromNumber(dq, dn, set) decimal32FromNumber((decimal32 *)(dq), dn, set)
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#endif

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