/* decQuad module header for the decNumber C Library.
  Copyright (C) 2007-2018 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/>.  */

/* ------------------------------------------------------------------ */
/* decQuad.h -- Decimal 128-bit format module header                  */
/* ------------------------------------------------------------------ */
/* This include file is always included by decSingle and decDouble,   */
/* and therefore also holds useful constants used by all three.       */

#if !defined(DECQUAD)
 #define DECQUAD

 #define DECQUADNAME         "decimalQuad"           /* Short name   */
 #define DECQUADTITLE        "Decimal 128-bit datum" /* Verbose name */
 #define DECQUADAUTHOR       "Mike Cowlishaw"        /* Who to blame */

 /* parameters for decQuads */
 #define DECQUAD_Bytes    16      /* length                          */
 #define DECQUAD_Pmax     34      /* maximum precision (digits)      */
 #define DECQUAD_Emin  -6143      /* minimum adjusted exponent       */
 #define DECQUAD_Emax   6144      /* maximum adjusted exponent       */
 #define DECQUAD_EmaxD     4      /* maximum exponent digits         */
 #define DECQUAD_Bias   6176      /* bias for the exponent           */
 #define DECQUAD_String   43      /* maximum string length, +1       */
 #define DECQUAD_EconL    12      /* exponent continuation length    */
 #define DECQUAD_Declets  11      /* count of declets                */
 /* highest biased exponent (Elimit-1) */
 #define DECQUAD_Ehigh (DECQUAD_Emax + DECQUAD_Bias - (DECQUAD_Pmax-1))

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

 /* The decQuad decimal 128-bit type, accessible by all sizes */
 typedef union {
   uint8_t   bytes[DECQUAD_Bytes];     /* fields: 1, 5, 12, 110 bits */
   uint16_t shorts[DECQUAD_Bytes/2];
   uint32_t  words[DECQUAD_Bytes/4];
   #if DECUSE64
   uint64_t  longs[DECQUAD_Bytes/8];
   #endif
   } decQuad;

 /* ---------------------------------------------------------------- */
 /* Shared constants                                                 */
 /* ---------------------------------------------------------------- */

 /* sign and special values [top 32-bits; last two bits are don't-care
    for Infinity on input, last bit don't-care for NaNs] */
 #define DECFLOAT_Sign  0x80000000     /* 1 00000 00 Sign */
 #define DECFLOAT_NaN   0x7c000000     /* 0 11111 00 NaN generic */
 #define DECFLOAT_qNaN  0x7c000000     /* 0 11111 00 qNaN */
 #define DECFLOAT_sNaN  0x7e000000     /* 0 11111 10 sNaN */
 #define DECFLOAT_Inf   0x78000000     /* 0 11110 00 Infinity */
 #define DECFLOAT_MinSp 0x78000000     /* minimum special value */
                                       /* [specials are all >=MinSp] */
 /* Sign nibble constants                                            */
 #if !defined(DECPPLUSALT)
   #define DECPPLUSALT  0x0A /* alternate plus  nibble               */
   #define DECPMINUSALT 0x0B /* alternate minus nibble               */
   #define DECPPLUS     0x0C /* preferred plus  nibble               */
   #define DECPMINUS    0x0D /* preferred minus nibble               */
   #define DECPPLUSALT2 0x0E /* alternate plus  nibble               */
   #define DECPUNSIGNED 0x0F /* alternate plus  nibble (unsigned)    */
 #endif

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

 #include "decQuadSymbols.h"

 /* Utilities and conversions, extractors, etc.) */
 extern decQuad * decQuadFromBCD(decQuad *, int32_t, const uint8_t *, int32_t);
 extern decQuad * decQuadFromInt32(decQuad *, int32_t);
 extern decQuad * decQuadFromPacked(decQuad *, int32_t, const uint8_t *);
 extern decQuad * decQuadFromPackedChecked(decQuad *, int32_t, const uint8_t *);
 extern decQuad * decQuadFromString(decQuad *, const char *, decContext *);
 extern decQuad * decQuadFromUInt32(decQuad *, uint32_t);
 extern int32_t   decQuadGetCoefficient(const decQuad *, uint8_t *);
 extern int32_t   decQuadGetExponent(const decQuad *);
 extern decQuad * decQuadSetCoefficient(decQuad *, const uint8_t *, int32_t);
 extern decQuad * decQuadSetExponent(decQuad *, decContext *, int32_t);
 extern void      decQuadShow(const decQuad *, const char *);
 extern int32_t   decQuadToBCD(const decQuad *, int32_t *, uint8_t *);
 extern char    * decQuadToEngString(const decQuad *, char *);
 extern int32_t   decQuadToInt32(const decQuad *, decContext *, enum rounding);
 extern int32_t   decQuadToInt32Exact(const decQuad *, decContext *, enum rounding);
 extern int32_t   decQuadToPacked(const decQuad *, int32_t *, uint8_t *);
 extern char    * decQuadToString(const decQuad *, char *);
 extern uint32_t  decQuadToUInt32(const decQuad *, decContext *, enum rounding);
 extern uint32_t  decQuadToUInt32Exact(const decQuad *, decContext *, enum rounding);
 extern decQuad * decQuadZero(decQuad *);

 /* Computational (result is a decQuad) */
 extern decQuad * decQuadAbs(decQuad *, const decQuad *, decContext *);
 extern decQuad * decQuadAdd(decQuad *, const decQuad *, const decQuad *, decContext *);
 extern decQuad * decQuadAnd(decQuad *, const decQuad *, const decQuad *, decContext *);
 extern decQuad * decQuadDivide(decQuad *, const decQuad *, const decQuad *, decContext *);
 extern decQuad * decQuadDivideInteger(decQuad *, const decQuad *, const decQuad *, decContext *);
 extern decQuad * decQuadFMA(decQuad *, const decQuad *, const decQuad *, const decQuad *, decContext *);
 extern decQuad * decQuadInvert(decQuad *, const decQuad *, decContext *);
 extern decQuad * decQuadLogB(decQuad *, const decQuad *, decContext *);
 extern decQuad * decQuadMax(decQuad *, const decQuad *, const decQuad *, decContext *);
 extern decQuad * decQuadMaxMag(decQuad *, const decQuad *, const decQuad *, decContext *);
 extern decQuad * decQuadMin(decQuad *, const decQuad *, const decQuad *, decContext *);
 extern decQuad * decQuadMinMag(decQuad *, const decQuad *, const decQuad *, decContext *);
 extern decQuad * decQuadMinus(decQuad *, const decQuad *, decContext *);
 extern decQuad * decQuadMultiply(decQuad *, const decQuad *, const decQuad *, decContext *);
 extern decQuad * decQuadNextMinus(decQuad *, const decQuad *, decContext *);
 extern decQuad * decQuadNextPlus(decQuad *, const decQuad *, decContext *);
 extern decQuad * decQuadNextToward(decQuad *, const decQuad *, const decQuad *, decContext *);
 extern decQuad * decQuadOr(decQuad *, const decQuad *, const decQuad *, decContext *);
 extern decQuad * decQuadPlus(decQuad *, const decQuad *, decContext *);
 extern decQuad * decQuadQuantize(decQuad *, const decQuad *, const decQuad *, decContext *);
 extern decQuad * decQuadReduce(decQuad *, const decQuad *, decContext *);
 extern decQuad * decQuadRemainder(decQuad *, const decQuad *, const decQuad *, decContext *);
 extern decQuad * decQuadRemainderNear(decQuad *, const decQuad *, const decQuad *, decContext *);
 extern decQuad * decQuadRotate(decQuad *, const decQuad *, const decQuad *, decContext *);
 extern decQuad * decQuadScaleB(decQuad *, const decQuad *, const decQuad *, decContext *);
 extern decQuad * decQuadShift(decQuad *, const decQuad *, const decQuad *, decContext *);
 extern decQuad * decQuadSubtract(decQuad *, const decQuad *, const decQuad *, decContext *);
 extern decQuad * decQuadToIntegralValue(decQuad *, const decQuad *, decContext *, enum rounding);
 extern decQuad * decQuadToIntegralExact(decQuad *, const decQuad *, decContext *);
 extern decQuad * decQuadXor(decQuad *, const decQuad *, const decQuad *, decContext *);

 /* Comparisons */
 extern decQuad * decQuadCompare(decQuad *, const decQuad *, const decQuad *, decContext *);
 extern decQuad * decQuadCompareSignal(decQuad *, const decQuad *, const decQuad *, decContext *);
 extern decQuad * decQuadCompareTotal(decQuad *, const decQuad *, const decQuad *);
 extern decQuad * decQuadCompareTotalMag(decQuad *, const decQuad *, const decQuad *);

 /* Copies */
 extern decQuad * decQuadCanonical(decQuad *, const decQuad *);
 extern decQuad * decQuadCopy(decQuad *, const decQuad *);
 extern decQuad * decQuadCopyAbs(decQuad *, const decQuad *);
 extern decQuad * decQuadCopyNegate(decQuad *, const decQuad *);
 extern decQuad * decQuadCopySign(decQuad *, const decQuad *, const decQuad *);

 /* Non-computational */
 extern enum decClass decQuadClass(const decQuad *);
 extern const char *  decQuadClassString(const decQuad *);
 extern uint32_t      decQuadDigits(const decQuad *);
 extern uint32_t      decQuadIsCanonical(const decQuad *);
 extern uint32_t      decQuadIsFinite(const decQuad *);
 extern uint32_t      decQuadIsInteger(const decQuad *);
 extern uint32_t      decQuadIsInfinite(const decQuad *);
 extern uint32_t      decQuadIsNaN(const decQuad *);
 extern uint32_t      decQuadIsNormal(const decQuad *);
 extern uint32_t      decQuadIsSignaling(const decQuad *);
 extern uint32_t      decQuadIsSignalling(const decQuad *);
 extern uint32_t      decQuadIsSigned(const decQuad *);
 extern uint32_t      decQuadIsSubnormal(const decQuad *);
 extern uint32_t      decQuadIsZero(const decQuad *);
 extern uint32_t      decQuadRadix(const decQuad *);
 extern uint32_t      decQuadSameQuantum(const decQuad *, const decQuad *);
 extern const char *  decQuadVersion(void);

 /* decNumber conversions; these are implemented as macros so as not  */
 /* to force a dependency on decimal128 and decNumber in decQuad.     */
 /* decQuadFromNumber returns a decimal128 * to avoid warnings.       */
 #define decQuadToNumber(dq, dn) decimal128ToNumber((decimal128 *)(dq), dn)
 #define decQuadFromNumber(dq, dn, set) decimal128FromNumber((decimal128 *)(dq), dn, set)

#endif

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