------------------------------------------------------------------------------ -- -- -- GNAT RUN-TIME COMPONENTS -- -- -- -- S Y S T E M . I M A G E _ F -- -- -- -- S p e c -- -- -- -- Copyright (C) 2020-2024, 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 -- -- . -- -- -- -- GNAT was originally developed by the GNAT team at New York University. -- -- Extensive contributions were provided by Ada Core Technologies Inc. -- -- -- ------------------------------------------------------------------------------ -- This package contains the routines for supporting the Image attribute for -- ordinary fixed point types whose Small is the ratio of two Int values, and -- also for conversion operations required in Text_IO.Fixed_IO for such types. generic type Int is range <>; type Uns is mod <>; with procedure Scaled_Divide (X, Y, Z : Int; Q, R : out Int; Round : Boolean); package System.Image_F is procedure Image_Fixed (V : Int; S : in out String; P : out Natural; Num : Int; Den : Int; For0 : Natural; Aft0 : Natural); -- Computes fixed_type'Image (V), where V is the integer value (in units of -- small) of an ordinary fixed point type with small Num/Den, and stores -- 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)). -- For0 and Aft0 are the values of the Fore and Aft attributes for the -- fixed point type whose mantissa type is Int and whose small is Num/Den. -- This function is used only for fixed point whose Small is an integer or -- its reciprocal (see package System.Image_R for the handling of other -- ordinary fixed-point types). The caller guarantees that S is long enough -- to hold the result and has a lower bound of 1. procedure Set_Image_Fixed (V : Int; S : in out String; P : in out Natural; Num : Int; Den : Int; For0 : Natural; Aft0 : Natural; Fore : Natural; Aft : Natural; Exp : Natural); -- Sets the image of V, where V is the integer value (in units of small) -- of a fixed point type with small Num/Den, starting at S (P + 1) and -- updating P to point to the last character stored, the caller promises -- that the buffer is large enough and no check is made. Constraint_Error -- will not necessarily be raised if this requirement is violated, since -- it is perfectly valid to compile this unit with checks off. For0 and -- Aft0 are the values of the Fore and Aft attributes for the fixed point -- type whose mantissa type is Int and whose small is Num/Den. The Fore, -- Aft and Exp can be set to any valid values for use by Text_IO.Fixed_IO. end System.Image_F;