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[/] [openrisc/] [trunk/] [gnu-stable/] [gcc-4.5.1/] [libdecnumber/] [dpd/] [decimal128.h] - Blame information for rev 826

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1 271 jeremybenn
/* Decimal 128-bit format module header for the decNumber C Library.
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   Copyright (C) 2005, 2007, 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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/* Decimal 128-bit format module header                               */
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/* ------------------------------------------------------------------ */
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#if !defined(DECIMAL128)
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  #define DECIMAL128
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  #define DEC128NAME     "decimal128"                 /* Short name   */
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  #define DEC128FULLNAME "Decimal 128-bit Number"     /* Verbose name */
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  #define DEC128AUTHOR   "Mike Cowlishaw"             /* Who to blame */
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  /* parameters for decimal128s */
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  #define DECIMAL128_Bytes  16          /* length                     */
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  #define DECIMAL128_Pmax   34          /* maximum precision (digits) */
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  #define DECIMAL128_Emax   6144        /* maximum adjusted exponent  */
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  #define DECIMAL128_Emin  -6143        /* minimum adjusted exponent  */
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  #define DECIMAL128_Bias   6176        /* bias for the exponent      */
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  #define DECIMAL128_String 43          /* maximum string length, +1  */
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  #define DECIMAL128_EconL  12          /* exp. continuation length   */
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  /* highest biased exponent (Elimit-1)                               */
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  #define DECIMAL128_Ehigh  (DECIMAL128_Emax+DECIMAL128_Bias-DECIMAL128_Pmax+1)
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  /* check enough digits, if pre-defined                              */
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  #if defined(DECNUMDIGITS)
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    #if (DECNUMDIGITS<DECIMAL128_Pmax)
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      #error decimal128.h needs pre-defined DECNUMDIGITS>=34 for safe use
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    #endif
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  #endif
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  #ifndef DECNUMDIGITS
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    #define DECNUMDIGITS DECIMAL128_Pmax /* size if not already defined*/
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  #endif
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  #ifndef DECNUMBER
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    #include "decNumber.h"              /* context and number library */
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  #endif
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  /* Decimal 128-bit type, accessible by bytes                        */
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  typedef struct {
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    uint8_t bytes[DECIMAL128_Bytes]; /* decimal128: 1, 5, 12, 110 bits*/
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    } decimal128;
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  /* special values [top byte excluding sign bit; last two bits are   */
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  /* don't-care for Infinity on input, last bit don't-care for NaN]   */
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  #if !defined(DECIMAL_NaN)
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    #define DECIMAL_NaN     0x7c        /* 0 11111 00 NaN             */
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    #define DECIMAL_sNaN    0x7e        /* 0 11111 10 sNaN            */
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    #define DECIMAL_Inf     0x78        /* 0 11110 00 Infinity        */
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  #endif
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#include "decimal128Local.h"
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  /* ---------------------------------------------------------------- */
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  /* Routines                                                         */
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  /* ---------------------------------------------------------------- */
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#include "decimal128Symbols.h"
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  #ifdef __cplusplus
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  extern "C" {
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  #endif
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  /* String conversions                                               */
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  decimal128 * decimal128FromString(decimal128 *, const char *, decContext *);
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  char * decimal128ToString(const decimal128 *, char *);
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  char * decimal128ToEngString(const decimal128 *, char *);
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  /* decNumber conversions                                            */
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  decimal128 * decimal128FromNumber(decimal128 *, const decNumber *,
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                                    decContext *);
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  decNumber * decimal128ToNumber(const decimal128 *, decNumber *);
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  /* Format-dependent utilities                                       */
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  uint32_t    decimal128IsCanonical(const decimal128 *);
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  decimal128 * decimal128Canonical(decimal128 *, const decimal128 *);
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  #ifdef __cplusplus
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  }
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  #endif
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#endif

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