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/****************************************************************************
* *
* GNAT COMPILER COMPONENTS *
* *
* U I N T P *
* *
* C Header File *
* *
* Copyright (C) 1992-2020, 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 is the C header that corresponds to the Ada package specification for
Uintp. It was created manually from uintp.ads and must be kept synchronized
with changes in this file. */
#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);
/* A constant value indicating a missing or unset Uint value. */
#define UI_No_Uint uintp__no_uint
extern const Uint UI_No_Uint;
/* 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 equality. */
#define UI_Eq uintp__ui_eq
extern Boolean UI_Eq (Uint, Uint);
/* 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
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