86 lines
3.2 KiB
Ada
86 lines
3.2 KiB
Ada
-----------------------------------------------------------------------------
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-- --
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-- GNAT COMPILER COMPONENTS --
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-- --
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-- I N T E R F A C E S . C --
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-- --
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-- S p e c --
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-- --
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-- $Revision: 1.1 $
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-- --
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-- This specification is adapted from the Ada Reference Manual for use with --
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-- GNAT Hi Integrity Edition. In accordance with the copyright of that --
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-- document, you can freely copy and modify this specification, provided --
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-- that if you redistribute a modified version, any changes that you have --
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-- made are clearly indicated. --
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-- --
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------------------------------------------------------------------------------
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-- This version contains only the type definitions for standard interfacing
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-- with C. All functions have been removed from the original spec.
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package Interfaces.C is
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pragma Pure (C);
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-- Declaration's based on C's <limits.h>
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CHAR_BIT : constant := 8;
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SCHAR_MIN : constant := -128;
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SCHAR_MAX : constant := 127;
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UCHAR_MAX : constant := 255;
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-- Signed and Unsigned Integers. Note that in GNAT, we have ensured that
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-- the standard predefined Ada types correspond to the standard C types
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type int is new Integer;
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type short is new Short_Integer;
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type long is new Long_Integer;
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type signed_char is range SCHAR_MIN .. SCHAR_MAX;
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for signed_char'Size use CHAR_BIT;
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type unsigned is mod 2 ** int'Size;
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type unsigned_short is mod 2 ** short'Size;
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type unsigned_long is mod 2 ** long'Size;
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type unsigned_char is mod (UCHAR_MAX + 1);
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for unsigned_char'Size use CHAR_BIT;
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subtype plain_char is unsigned_char;
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type ptrdiff_t is
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range -(2 ** (Standard'Address_Size - 1)) ..
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+(2 ** (Standard'Address_Size - 1) - 1);
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type size_t is mod 2 ** Standard'Address_Size;
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-- Floating-Point
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type C_float is new Float;
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type double is new Standard.Long_Float;
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type long_double is new Standard.Long_Long_Float;
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----------------------------
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-- Characters and Strings --
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----------------------------
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type char is new Character;
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nul : constant char := char'First;
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type char_array is array (size_t range <>) of aliased char;
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for char_array'Component_Size use CHAR_BIT;
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------------------------------------
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-- Wide Character and Wide String --
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------------------------------------
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type wchar_t is new Wide_Character;
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for wchar_t'Size use Standard'Wchar_T_Size;
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wide_nul : constant wchar_t := wchar_t'First;
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type wchar_array is array (size_t range <>) of aliased wchar_t;
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end Interfaces.C;
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