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------------------------------------------------------------------------------ -- -- -- GNAT RUN-TIME COMPONENTS -- -- -- -- S Y S T E M . I M G _ R E A L -- -- -- -- 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 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;