185 lines
6.9 KiB
Ada
185 lines
6.9 KiB
Ada
------------------------------------------------------------------------------
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-- --
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-- GNAT RUN-TIME COMPONENTS --
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-- --
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-- S Y S T E M . D I M . F L O A T _ I O --
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-- --
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-- S p e c --
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-- --
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-- Copyright (C) 2011-2015, Free Software Foundation, Inc. --
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-- --
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-- GNAT is free software; you can redistribute it and/or modify it under --
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-- terms of the GNU General Public License as published by the Free Soft- --
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-- ware Foundation; either version 3, or (at your option) any later ver- --
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-- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
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-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
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-- or FITNESS FOR A PARTICULAR PURPOSE. --
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-- --
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-- As a special exception under Section 7 of GPL version 3, you are granted --
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-- additional permissions described in the GCC Runtime Library Exception, --
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-- version 3.1, as published by the Free Software Foundation. --
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-- --
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-- You should have received a copy of the GNU General Public License and --
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-- a copy of the GCC Runtime Library Exception along with this program; --
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-- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
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-- <http://www.gnu.org/licenses/>. --
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-- --
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-- GNAT was originally developed by the GNAT team at New York University. --
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-- Extensive contributions were provided by Ada Core Technologies Inc. --
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-- --
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------------------------------------------------------------------------------
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-- This package provides output routines for float dimensioned types. All Put
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-- routines are modelled after those in package Ada.Text_IO.Float_IO with the
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-- addition of an extra default parameter. All Put_Dim_Of routines
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-- output the dimension of Item in a symbolic manner.
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-- Parameter Symbol may be used in the following manner (all the examples are
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-- based on the MKS system of units defined in package System.Dim.Mks):
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-- type Mks_Type is new Long_Long_Float
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-- with
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-- Dimension_System => (
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-- (Unit_Name => Meter, Unit_Symbol => 'm', Dim_Symbol => 'L'),
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-- (Unit_Name => Kilogram, Unit_Symbol => "kg", Dim_Symbol => 'M'),
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-- (Unit_Name => Second, Unit_Symbol => 's', Dim_Symbol => 'T'),
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-- (Unit_Name => Ampere, Unit_Symbol => 'A', Dim_Symbol => 'I'),
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-- (Unit_Name => Kelvin, Unit_Symbol => 'K', Dim_Symbol => '@'),
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-- (Unit_Name => Mole, Unit_Symbol => "mol", Dim_Symbol => 'N'),
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-- (Unit_Name => Candela, Unit_Symbol => "cd", Dim_Symbol => 'J'));
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-- Case 1. A value is supplied for Symbol
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-- * Put : The string appears as a suffix of Item
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-- * Put_Dim_Of : The string appears alone
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-- Obj : Mks_Type := 2.6;
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-- Put (Obj, 1, 1, 0, " dimensionless");
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-- Put_Dim_Of (Obj, "dimensionless");
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-- The corresponding outputs are:
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-- $2.6 dimensionless
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-- $dimensionless
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-- Case 2. No value is supplied for Symbol and Item is dimensionless
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-- * Put : Item appears without a suffix
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-- * Put_Dim_Of : the output is []
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-- Obj : Mks_Type := 2.6;
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-- Put (Obj, 1, 1, 0);
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-- Put_Dim_Of (Obj);
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-- The corresponding outputs are:
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-- $2.6
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-- $[]
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-- Case 3. No value is supplied for Symbol and Item has a dimension
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-- * Put : If the type of Item is a dimensioned subtype whose
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-- symbol is not empty, then the symbol appears as a suffix.
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-- Otherwise, a new string is created and appears as a
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-- suffix of Item. This string results in the successive
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-- concatenations between each unit symbol raised by its
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-- corresponding dimension power from the dimensions of Item.
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-- * Put_Dim_Of : The output is a new string resulting in the successive
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-- concatenations between each dimension symbol raised by its
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-- corresponding dimension power from the dimensions of Item.
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-- subtype Length is Mks_Type
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-- with
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-- Dimension => ('m',
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-- Meter => 1,
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-- others => 0);
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-- Obj : Length := 2.3 * dm;
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-- Put (Obj, 1, 2, 0);
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-- Put_Dim_Of (Obj);
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-- The corresponding outputs are:
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-- $0.23 m
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-- $[L]
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-- subtype Random is Mks_Type
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-- with
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-- Dimension => (
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-- Meter => 3,
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-- Candela => -1,
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-- others => 0);
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-- Obj : Random := 5.0;
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-- Put (Obj);
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-- Put_Dim_Of (Obj);
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-- The corresponding outputs are:
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-- $5.0 m**3.cd**(-1)
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-- $[l**3.J**(-1)]
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-- Put (3.3 * km * dm * min, 5, 1, 0);
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-- Put_Dim_Of (3.3 * km * dm * min);
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-- The corresponding outputs are:
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-- $19800.0 m**2.s
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-- $[L**2.T]
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with Ada.Text_IO; use Ada.Text_IO;
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generic
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type Num_Dim_Float is digits <>;
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package System.Dim.Float_IO is
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Default_Fore : Field := 2;
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Default_Aft : Field := Num_Dim_Float'Digits - 1;
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Default_Exp : Field := 3;
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procedure Put
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(File : File_Type;
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Item : Num_Dim_Float;
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Fore : Field := Default_Fore;
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Aft : Field := Default_Aft;
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Exp : Field := Default_Exp;
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Symbol : String := "");
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procedure Put
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(Item : Num_Dim_Float;
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Fore : Field := Default_Fore;
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Aft : Field := Default_Aft;
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Exp : Field := Default_Exp;
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Symbol : String := "");
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procedure Put
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(To : out String;
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Item : Num_Dim_Float;
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Aft : Field := Default_Aft;
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Exp : Field := Default_Exp;
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Symbol : String := "");
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procedure Put_Dim_Of
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(File : File_Type;
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Item : Num_Dim_Float;
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Symbol : String := "");
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procedure Put_Dim_Of
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(Item : Num_Dim_Float;
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Symbol : String := "");
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procedure Put_Dim_Of
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(To : out String;
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Item : Num_Dim_Float;
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Symbol : String := "");
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pragma Inline (Put);
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pragma Inline (Put_Dim_Of);
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function Image
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(Item : Num_Dim_Float;
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Aft : Field := Default_Aft;
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Exp : Field := Default_Exp;
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Symbol : String := "") return String;
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end System.Dim.Float_IO;
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