| ------------------------------------------------------------------------------ |
| -- -- |
| -- 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) 2011-2013, 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. -- |
| -- -- |
| ------------------------------------------------------------------------------ |
| |
| -- This package provides output routines for float dimensioned types. All Put |
| -- routines are modelled 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); |
| |
| end System.Dim.Float_IO; |
