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/****************************************************************************

 *                                                                          *

 *                         GNAT COMPILER COMPONENTS                         *

 *                                                                          *

 *                                U I N T P                                 *

 *                                                                          *

 *                              C Header File                               *

 *                                                                          *

 *            Copyright (C) 1992-2011, Free Software Foundation, Inc.       *

 *                                                                          *

 * GNAT is free software;  you can  redistribute it  and/or modify it under *

 * terms of the  GNU General Public License as published  by the Free Soft- *

 * ware  Foundation;  either version 3,  or (at your option) any later ver- *

 * sion.  GNAT is distributed in the hope that it will be useful, but WITH- *

 * OUT 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  distributed with GNAT; see file COPYING3.  If not, go to *

 * http://www.gnu.org/licenses for a complete copy of the license.          *

 *                                                                          *

 * GNAT was originally developed  by the GNAT team at  New York University. *

 * Extensive contributions were provided by Ada Core Technologies Inc.      *

 *                                                                          *

 ****************************************************************************/

/* This file corresponds to the Ada package specification Uintp.  It was

   created manually from the files uintp.ads and uintp.adb.  */

#ifdef __cplusplus

extern "C" {

#endif

/* Support for universal integer arithmetic */

struct Uint_Entry

{

  Pos Length;

  Int Loc;

};

/* See if a Uint is within the range of an integer.  */

#define UI_Is_In_Int_Range  uintp__ui_is_in_int_range

extern Boolean UI_Is_In_Int_Range       (Uint);

/* Obtain Char_Code value from Uint input.  Value must be in range.  */

#define UI_To_CC uintp__ui_to_cc

extern Char_Code UI_To_CC               (Uint);

/* Convert a Char_Code into a Uint.  */

#define UI_From_CC uintp__ui_from_cc

extern Uint UI_From_CC                  (Char_Code);

/* Obtain Int value from Uint input.  Abort if the result is out of range.  */

#define UI_To_Int uintp__ui_to_int

extern Int UI_To_Int                    (Uint);

/* Similarly, but return a GCC INTEGER_CST.  */

extern tree UI_To_gnu                   (Uint, tree);

/* Convert an Int into a Uint.  */

#define UI_From_Int uintp__ui_from_int

extern Uint UI_From_Int                 (int);

/* Similarly, but take a GCC INTEGER_CST.  */

extern Uint UI_From_gnu                 (tree);

/* Uint values are represented as multiple precision integers stored in a

   multi-digit format using UI_Base as the base.  This value is chosen so

   that the product UI_Base*UI_Base is within the range of Int values.  */

#define UI_Base uintp__base

extern const int UI_Base;

/* Types for the fat pointer of Int vectors and the template it points to.  */

typedef struct {int Low_Bound, High_Bound; } Vector_Template;

typedef struct {const int *Array; Vector_Template *Bounds; }

        __attribute ((aligned (sizeof (char *) * 2))) Int_Vector;

/* Create and return the Uint value from the Int vector.  */

#define Vector_To_Uint uintp__vector_to_uint

extern Uint Vector_To_Uint              (Int_Vector, Boolean);

/* Compare integer values for less than.  */

#define UI_Lt uintp__ui_lt

extern Boolean UI_Lt                    (Uint, Uint);

/* Universal integers are represented by the Uint type which is an index into

   the Uints_Ptr table containing Uint_Entry values.  A Uint_Entry contains an

   index and length for getting the "digits" of the universal integer from the

   Udigits_Ptr table.

   For efficiency, this method is used only for integer values larger than the

   constant Uint_Bias.  If a Uint is less than this constant, then it contains

   the integer value itself.  The origin of the Uints_Ptr table is adjusted so

   that a Uint value of Uint_Bias indexes the first element.  */

#define Uints_Ptr (uintp__uints__table - Uint_Table_Start)

extern struct Uint_Entry *uintp__uints__table;

#define Udigits_Ptr uintp__udigits__table

extern int *uintp__udigits__table;

#ifdef __cplusplus

}

#endif