/* decDouble module header for the decNumber C Library.
   Copyright (C) 2007 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
   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.  */

/* ------------------------------------------------------------------ */
/* decDouble.h -- Decimal 64-bit format module header		      */
/* ------------------------------------------------------------------ */
/* Please see decFloats.h for an overview and documentation details.  */
/* ------------------------------------------------------------------ */

#if !defined(DECDOUBLE)
  #define DECDOUBLE

  #define DECDOUBLENAME	      "decimalDouble"	      /* Short name   */
  #define DECDOUBLETITLE      "Decimal 64-bit datum"  /* Verbose name */
  #define DECDOUBLEAUTHOR     "Mike Cowlishaw"	      /* Who to blame */

  /* parameters for decDoubles */
  #define DECDOUBLE_Bytes   8	   /* length			      */
  #define DECDOUBLE_Pmax    16	   /* maximum precision (digits)      */
  #define DECDOUBLE_Emin   -383	   /* minimum adjusted exponent	      */
  #define DECDOUBLE_Emax    384	   /* maximum adjusted exponent	      */
  #define DECDOUBLE_EmaxD   3	   /* maximum exponent digits	      */
  #define DECDOUBLE_Bias    398	   /* bias for the exponent	      */
  #define DECDOUBLE_String  25	   /* maximum string length, +1	      */
  #define DECDOUBLE_EconL   8	   /* exponent continuation length    */
  #define DECDOUBLE_Declets 5	   /* count of declets		      */
  /* highest biased exponent (Elimit-1) */
  #define DECDOUBLE_Ehigh (DECDOUBLE_Emax + DECDOUBLE_Bias - (DECDOUBLE_Pmax-1))

  /* Required includes						      */
  #include "decContext.h"
  #include "decQuad.h"

  /* The decDouble decimal 64-bit type, accessible by various types */
  typedef union {
    uint8_t bytes[DECDOUBLE_Bytes]; /* fields: 1, 5, 8, 50 bits	  */
    uint16_t shorts[DECDOUBLE_Bytes/2];
    uint32_t words[DECDOUBLE_Bytes/4];
    } decDouble;

  /* ---------------------------------------------------------------- */
  /* Routines -- implemented as decFloat routines in common files     */
  /* ---------------------------------------------------------------- */

  #include "decDoubleSymbols.h"

  /* Utilities and conversions, extractors, etc.) */
  extern decDouble * decDoubleFromBCD(decDouble *, int32_t, const uint8_t *, int32_t);
  extern decDouble * decDoubleFromInt32(decDouble *, int32_t);
  extern decDouble * decDoubleFromPacked(decDouble *, int32_t, const uint8_t *);
  extern decDouble * decDoubleFromString(decDouble *, const char *, decContext *);
  extern decDouble * decDoubleFromUInt32(decDouble *, uint32_t);
  extern decDouble * decDoubleFromWider(decDouble *, const decQuad *, decContext *);
  extern int32_t     decDoubleGetCoefficient(const decDouble *, uint8_t *);
  extern int32_t     decDoubleGetExponent(const decDouble *);
  extern decDouble * decDoubleSetCoefficient(decDouble *, const uint8_t *, int32_t);
  extern decDouble * decDoubleSetExponent(decDouble *, decContext *, int32_t);
  extern void	     decDoubleShow(const decDouble *, const char *);
  extern int32_t     decDoubleToBCD(const decDouble *, int32_t *, uint8_t *);
  extern char	   * decDoubleToEngString(const decDouble *, char *);
  extern int32_t     decDoubleToInt32(const decDouble *, decContext *, enum rounding);
  extern int32_t     decDoubleToInt32Exact(const decDouble *, decContext *, enum rounding);
  extern int32_t     decDoubleToPacked(const decDouble *, int32_t *, uint8_t *);
  extern char	   * decDoubleToString(const decDouble *, char *);
  extern uint32_t    decDoubleToUInt32(const decDouble *, decContext *, enum rounding);
  extern uint32_t    decDoubleToUInt32Exact(const decDouble *, decContext *, enum rounding);
  extern decQuad   * decDoubleToWider(const decDouble *, decQuad *);
  extern decDouble * decDoubleZero(decDouble *);

  /* Computational (result is a decDouble) */
  extern decDouble * decDoubleAbs(decDouble *, const decDouble *, decContext *);
  extern decDouble * decDoubleAdd(decDouble *, const decDouble *, const decDouble *, decContext *);
  extern decDouble * decDoubleAnd(decDouble *, const decDouble *, const decDouble *, decContext *);
  extern decDouble * decDoubleDivide(decDouble *, const decDouble *, const decDouble *, decContext *);
  extern decDouble * decDoubleDivideInteger(decDouble *, const decDouble *, const decDouble *, decContext *);
  extern decDouble * decDoubleFMA(decDouble *, const decDouble *, const decDouble *, const decDouble *, decContext *);
  extern decDouble * decDoubleInvert(decDouble *, const decDouble *, decContext *);
  extern decDouble * decDoubleLogB(decDouble *, const decDouble *, decContext *);
  extern decDouble * decDoubleMax(decDouble *, const decDouble *, const decDouble *, decContext *);
  extern decDouble * decDoubleMaxMag(decDouble *, const decDouble *, const decDouble *, decContext *);
  extern decDouble * decDoubleMin(decDouble *, const decDouble *, const decDouble *, decContext *);
  extern decDouble * decDoubleMinMag(decDouble *, const decDouble *, const decDouble *, decContext *);
  extern decDouble * decDoubleMinus(decDouble *, const decDouble *, decContext *);
  extern decDouble * decDoubleMultiply(decDouble *, const decDouble *, const decDouble *, decContext *);
  extern decDouble * decDoubleNextMinus(decDouble *, const decDouble *, decContext *);
  extern decDouble * decDoubleNextPlus(decDouble *, const decDouble *, decContext *);
  extern decDouble * decDoubleNextToward(decDouble *, const decDouble *, const decDouble *, decContext *);
  extern decDouble * decDoubleOr(decDouble *, const decDouble *, const decDouble *, decContext *);
  extern decDouble * decDoublePlus(decDouble *, const decDouble *, decContext *);
  extern decDouble * decDoubleQuantize(decDouble *, const decDouble *, const decDouble *, decContext *);
  extern decDouble * decDoubleReduce(decDouble *, const decDouble *, decContext *);
  extern decDouble * decDoubleRemainder(decDouble *, const decDouble *, const decDouble *, decContext *);
  extern decDouble * decDoubleRemainderNear(decDouble *, const decDouble *, const decDouble *, decContext *);
  extern decDouble * decDoubleRotate(decDouble *, const decDouble *, const decDouble *, decContext *);
  extern decDouble * decDoubleScaleB(decDouble *, const decDouble *, const decDouble *, decContext *);
  extern decDouble * decDoubleShift(decDouble *, const decDouble *, const decDouble *, decContext *);
  extern decDouble * decDoubleSubtract(decDouble *, const decDouble *, const decDouble *, decContext *);
  extern decDouble * decDoubleToIntegralValue(decDouble *, const decDouble *, decContext *, enum rounding);
  extern decDouble * decDoubleToIntegralExact(decDouble *, const decDouble *, decContext *);
  extern decDouble * decDoubleXor(decDouble *, const decDouble *, const decDouble *, decContext *);

  /* Comparisons */
  extern decDouble * decDoubleCompare(decDouble *, const decDouble *, const decDouble *, decContext *);
  extern decDouble * decDoubleCompareSignal(decDouble *, const decDouble *, const decDouble *, decContext *);
  extern decDouble * decDoubleCompareTotal(decDouble *, const decDouble *, const decDouble *);
  extern decDouble * decDoubleCompareTotalMag(decDouble *, const decDouble *, const decDouble *);

  /* Copies */
  extern decDouble * decDoubleCanonical(decDouble *, const decDouble *);
  extern decDouble * decDoubleCopy(decDouble *, const decDouble *);
  extern decDouble * decDoubleCopyAbs(decDouble *, const decDouble *);
  extern decDouble * decDoubleCopyNegate(decDouble *, const decDouble *);
  extern decDouble * decDoubleCopySign(decDouble *, const decDouble *, const decDouble *);

  /* Non-computational */
  extern enum decClass decDoubleClass(const decDouble *);
  extern const char *  decDoubleClassString(const decDouble *);
  extern uint32_t      decDoubleDigits(const decDouble *);
  extern uint32_t      decDoubleIsCanonical(const decDouble *);
  extern uint32_t      decDoubleIsFinite(const decDouble *);
  extern uint32_t      decDoubleIsInfinite(const decDouble *);
  extern uint32_t      decDoubleIsInteger(const decDouble *);
  extern uint32_t      decDoubleIsNaN(const decDouble *);
  extern uint32_t      decDoubleIsNormal(const decDouble *);
  extern uint32_t      decDoubleIsSignaling(const decDouble *);
  extern uint32_t      decDoubleIsSignalling(const decDouble *);
  extern uint32_t      decDoubleIsSigned(const decDouble *);
  extern uint32_t      decDoubleIsSubnormal(const decDouble *);
  extern uint32_t      decDoubleIsZero(const decDouble *);
  extern uint32_t      decDoubleRadix(const decDouble *);
  extern uint32_t      decDoubleSameQuantum(const decDouble *, const decDouble *);
  extern const char *  decDoubleVersion(void);

  /* decNumber conversions; these are implemented as macros so as not  */
  /* to force a dependency on decimal64 and decNumber in decDouble.    */
  #define decDoubleToNumber(dq, dn) decimal64ToNumber((decimal64 *)(dq), dn)
  #define decDoubleFromNumber(dq, dn, set) (decDouble *)decimal64FromNumber((decimal64 *)(dq), dn, set)

#endif