/* decSingle module header for the decNumber C Library.
  Copyright (C) 2005-2018 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/>.  */

/* ------------------------------------------------------------------ */
/* 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

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