------------------------------------------------------------------------------ -- -- -- GNAT RUN-TIME COMPONENTS -- -- -- -- S Y S T E M . I M G _ D E C -- -- -- -- S p e c -- -- -- -- Copyright (C) 1992-2005 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 2, 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 COPYING. If not, write -- -- to the Free Software Foundation, 51 Franklin Street, Fifth Floor, -- -- Boston, MA 02110-1301, USA. -- -- -- -- As a special exception, if other files instantiate generics from this -- -- unit, or you link this unit with other files to produce an executable, -- -- this unit does not by itself cause the resulting executable to be -- -- covered by the GNU General Public License. This exception does not -- -- however invalidate any other reasons why the executable file might be -- -- covered by the GNU Public License. -- -- -- -- GNAT was originally developed by the GNAT team at New York University. -- -- Extensive contributions were provided by Ada Core Technologies Inc. -- -- -- ------------------------------------------------------------------------------ -- Image for decimal fixed types where the size of the corresponding integer -- type does not exceed Integer'Size (also used for Text_IO.Decimal_IO output) package System.Img_Dec is pragma Preelaborate; function Image_Decimal (V : Integer; Scale : Integer) return String; -- Compute 'Image of V, the integer value (in units of delta) of a decimal -- type whose Scale is as given and return the result. THe image is given -- by the rules in RM 3.5(34) for fixed-point type image functions. procedure Set_Image_Decimal (V : Integer; S : out String; P : in out Natural; Scale : Integer; Fore : Natural; Aft : Natural; Exp : Natural); -- Sets the image of V, where V is the integer value (in units of delta) -- of a decimal type with the given Scale, starting at S (P + 1), updating -- P to point to the last character stored, the caller promises that the -- buffer is large enough and no check is made for this. Constraint_Error -- will not necessarily be raised if this requirement is violated, since -- it is perfectly valid to compile this unit with checks off. The Fore, -- Aft and Exp values can be set to any valid values for the case of use -- by Text_IO.Decimal_IO. procedure Set_Decimal_Digits (Digs : in out String; NDigs : Natural; S : out String; P : in out Natural; Scale : Integer; Fore : Natural; Aft : Natural; Exp : Natural); -- This procedure has the same semantics as Set_Image_Decimal, except that -- the value in Digs (1 .. NDigs) is given as a string of decimal digits -- preceded by either a minus sign or a space (i.e. the integer image of -- the value in units of delta). The call may destroy the value in Digs, -- which is why Digs is in-out (this happens if rounding is required). -- Set_Decimal_Digits is shared by all the decimal image routines. end System.Img_Dec;