| ------------------------------------------------------------------------------ |
| -- -- |
| -- GNAT RUN-TIME COMPONENTS -- |
| -- -- |
| -- S Y S T E M . I M G _ D E C -- |
| -- -- |
| -- S p e c -- |
| -- -- |
| -- Copyright (C) 1992-2009, 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. -- |
| -- -- |
| -- As a special exception 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/>. -- |
| -- -- |
| -- 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 Pure; |
| |
| procedure Image_Decimal |
| (V : Integer; |
| S : in out String; |
| P : out Natural; |
| Scale : Integer); |
| -- Computes fixed_type'Image (V), where V is the integer value (in units of |
| -- delta) of a decimal type whose Scale is as given and stores the result |
| -- S (1 .. P), updating P to the value of L. The image is given by the |
| -- rules in RM 3.5(34) for fixed-point type image functions. The caller |
| -- guarantees that S is long enough to hold the result. S need not have a |
| -- lower bound of 1. |
| |
| procedure Set_Image_Decimal |
| (V : Integer; |
| S : in 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. Note that there is no leading space stored. |
| |
| 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; |
