------------------------------------------------------------------------------ -- -- -- GNAT RUN-TIME COMPONENTS -- -- -- -- S Y S T E M . D I M . F L O A T _ I O -- -- -- -- S p e c -- -- -- -- Copyright (C) 2011-2019, 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 provides output routines for float dimensioned types. All Put -- routines are modeled after those in package Ada.Text_IO.Float_IO with the -- addition of an extra default parameter. All Put_Dim_Of routines -- output the dimension of Item in a symbolic manner. -- Parameter Symbol may be used in the following manner (all the examples are -- based on the MKS system of units defined in package System.Dim.Mks): -- type Mks_Type is new Long_Long_Float -- with -- Dimension_System => ( -- (Unit_Name => Meter, Unit_Symbol => 'm', Dim_Symbol => 'L'), -- (Unit_Name => Kilogram, Unit_Symbol => "kg", Dim_Symbol => 'M'), -- (Unit_Name => Second, Unit_Symbol => 's', Dim_Symbol => 'T'), -- (Unit_Name => Ampere, Unit_Symbol => 'A', Dim_Symbol => 'I'), -- (Unit_Name => Kelvin, Unit_Symbol => 'K', Dim_Symbol => '@'), -- (Unit_Name => Mole, Unit_Symbol => "mol", Dim_Symbol => 'N'), -- (Unit_Name => Candela, Unit_Symbol => "cd", Dim_Symbol => 'J')); -- Case 1. A value is supplied for Symbol -- * Put : The string appears as a suffix of Item -- * Put_Dim_Of : The string appears alone -- Obj : Mks_Type := 2.6; -- Put (Obj, 1, 1, 0, " dimensionless"); -- Put_Dim_Of (Obj, "dimensionless"); -- The corresponding outputs are: -- $2.6 dimensionless -- $dimensionless -- Case 2. No value is supplied for Symbol and Item is dimensionless -- * Put : Item appears without a suffix -- * Put_Dim_Of : the output is [] -- Obj : Mks_Type := 2.6; -- Put (Obj, 1, 1, 0); -- Put_Dim_Of (Obj); -- The corresponding outputs are: -- $2.6 -- $[] -- Case 3. No value is supplied for Symbol and Item has a dimension -- * Put : If the type of Item is a dimensioned subtype whose -- symbol is not empty, then the symbol appears as a suffix. -- Otherwise, a new string is created and appears as a -- suffix of Item. This string results in the successive -- concatenations between each unit symbol raised by its -- corresponding dimension power from the dimensions of Item. -- * Put_Dim_Of : The output is a new string resulting in the successive -- concatenations between each dimension symbol raised by its -- corresponding dimension power from the dimensions of Item. -- subtype Length is Mks_Type -- with -- Dimension => ('m', -- Meter => 1, -- others => 0); -- Obj : Length := 2.3 * dm; -- Put (Obj, 1, 2, 0); -- Put_Dim_Of (Obj); -- The corresponding outputs are: -- $0.23 m -- $[L] -- subtype Random is Mks_Type -- with -- Dimension => ( -- Meter => 3, -- Candela => -1, -- others => 0); -- Obj : Random := 5.0; -- Put (Obj); -- Put_Dim_Of (Obj); -- The corresponding outputs are: -- $5.0 m**3.cd**(-1) -- $[l**3.J**(-1)] -- Put (3.3 * km * dm * min, 5, 1, 0); -- Put_Dim_Of (3.3 * km * dm * min); -- The corresponding outputs are: -- $19800.0 m**2.s -- $[L**2.T] with Ada.Text_IO; use Ada.Text_IO; generic type Num_Dim_Float is digits <>; package System.Dim.Float_IO is Default_Fore : Field := 2; Default_Aft : Field := Num_Dim_Float'Digits - 1; Default_Exp : Field := 3; procedure Put (File : File_Type; Item : Num_Dim_Float; Fore : Field := Default_Fore; Aft : Field := Default_Aft; Exp : Field := Default_Exp; Symbol : String := ""); procedure Put (Item : Num_Dim_Float; Fore : Field := Default_Fore; Aft : Field := Default_Aft; Exp : Field := Default_Exp; Symbol : String := ""); procedure Put (To : out String; Item : Num_Dim_Float; Aft : Field := Default_Aft; Exp : Field := Default_Exp; Symbol : String := ""); procedure Put_Dim_Of (File : File_Type; Item : Num_Dim_Float; Symbol : String := ""); procedure Put_Dim_Of (Item : Num_Dim_Float; Symbol : String := ""); procedure Put_Dim_Of (To : out String; Item : Num_Dim_Float; Symbol : String := ""); pragma Inline (Put); pragma Inline (Put_Dim_Of); function Image (Item : Num_Dim_Float; Aft : Field := Default_Aft; Exp : Field := Default_Exp; Symbol : String := "") return String; end System.Dim.Float_IO;