| ------------------------------------------------------------------------------ |
| -- -- |
| -- GNAT RUN-TIME COMPONENTS -- |
| -- -- |
| -- S Y S T E M . I M G _ R E A L -- |
| -- -- |
| -- S p e c -- |
| -- -- |
| -- Copyright (C) 1992-2007, 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 fixed and float types (also used for Float_IO/Fixed_IO output) |
| |
| package System.Img_Real is |
| pragma Pure; |
| |
| procedure Image_Ordinary_Fixed_Point |
| (V : Long_Long_Float; |
| S : in out String; |
| P : out Natural; |
| Aft : Natural); |
| -- Computes fixed_type'Image (V) and returns the result in S (1 .. P) |
| -- updating P on return. The result is computed according to the rules for |
| -- image for fixed-point types (RM 3.5(34)), where Aft is the value of the |
| -- Aft attribute for the fixed-point type. This function is used only for |
| -- ordinary fixed point (see package System.Img_Dec for handling of decimal |
| -- fixed-point). The caller guarantees that S is long enough to hold the |
| -- result and has a lower bound of 1. |
| |
| procedure Image_Floating_Point |
| (V : Long_Long_Float; |
| S : in out String; |
| P : out Natural; |
| Digs : Natural); |
| -- Computes fixed_type'Image (V) and returns the result in S (1 .. P) |
| -- updating P on return. The result is computed according to the rules for |
| -- image for floating-point types (RM 3.5(33)), where Digs is the value of |
| -- the Digits attribute for the floating-point type. The caller guarantees |
| -- that S is long enough to hold the result and has a lower bound of 1. |
| |
| procedure Set_Image_Real |
| (V : Long_Long_Float; |
| S : out String; |
| P : in out Natural; |
| Fore : Natural; |
| Aft : Natural; |
| Exp : Natural); |
| -- Sets the image of V 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 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 from Text_IO. Note |
| -- that no space is stored at the start for non-negative values. |
| |
| end System.Img_Real; |
