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jeremybenn |
------------------------------------------------------------------------------
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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 . M K S --
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-- --
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-- S p e c --
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-- --
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-- Copyright (C) 2011-2012, 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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-- Defines the MKS dimension system which is the SI system of units
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-- Some other prefixes of this system are defined in a child package (see
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-- System.Dim_Mks.Other_Prefixes) in order to avoid too many constant
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-- declarations in this package.
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-- The dimension terminology is defined in System.Dim_IO package
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with Ada.Numerics;
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package System.Dim.Mks is
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e : constant := Ada.Numerics.e;
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Pi : constant := Ada.Numerics.Pi;
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-- Dimensioned type Mks_Type
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type Mks_Type is new Long_Long_Float
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with
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Dimension_System => ((Meter, 'm'),
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(Kilogram, "kg"),
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(Second, 's'),
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(Ampere, 'A'),
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(Kelvin, 'K'),
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(Mole, "mol"),
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(Candela, "cd"));
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-- SI Base dimensioned subtype
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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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subtype Mass is Mks_Type
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with
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Dimension => ("kg",
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Kilogram => 1,
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others => 0);
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subtype Time is Mks_Type
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with
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Dimension => ('s',
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Second => 1,
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others => 0);
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subtype Electric_Current is Mks_Type
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with
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Dimension => ('A',
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Ampere => 1,
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others => 0);
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subtype Thermodynamic_Temperature is Mks_Type
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with
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Dimension => ('K',
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Kelvin => 1,
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others => 0);
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subtype Amount_Of_Substance is Mks_Type
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with
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Dimension => ("mol",
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Mole => 1,
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others => 0);
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subtype Luminous_Intensity is Mks_Type
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with
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Dimension => ("cd",
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Candela => 1,
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others => 0);
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-- SI Base units
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m : constant Length := 1.0;
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kg : constant Mass := 1.0;
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s : constant Time := 1.0;
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A : constant Electric_Current := 1.0;
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K : constant Thermodynamic_Temperature := 1.0;
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mol : constant Amount_Of_Substance := 1.0;
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cd : constant Luminous_Intensity := 1.0;
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-- SI Derived dimensioned subtypes
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subtype Angle is Mks_Type
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with
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Dimension => ("rad",
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others => 0);
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subtype Solid_Angle is Mks_Type
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with
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Dimension => ("sr",
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others => 0);
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subtype Frequency is Mks_Type
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with
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Dimension => ("Hz",
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Second => -1,
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others => 0);
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subtype Force is Mks_Type
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with
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Dimension => ('N',
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Meter => 1,
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Kilogram => 1,
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Second => -2,
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others => 0);
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subtype Pressure is Mks_Type
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with
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Dimension => ("Pa",
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Meter => -1,
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Kilogram => 1,
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Second => -2,
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others => 0);
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subtype Energy is Mks_Type
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with
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Dimension => ('J',
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Meter => 2,
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Kilogram => 1,
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Second => -2,
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others => 0);
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subtype Power is Mks_Type
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with
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Dimension => ('W',
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Meter => 2,
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Kilogram => 1,
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Second => -3,
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others => 0);
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subtype Electric_Charge is Mks_Type
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with
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Dimension => ('C',
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Second => 1,
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Ampere => 1,
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others => 0);
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subtype Electric_Potential_Difference is Mks_Type
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with
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Dimension => ('V',
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Meter => 2,
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Kilogram => 1,
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Second => -3,
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Ampere => -1,
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others => 0);
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subtype Electric_Capacitance is Mks_Type
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with
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Dimension => ('F',
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Meter => -2,
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Kilogram => -1,
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Second => 4,
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Ampere => 2,
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others => 0);
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subtype Electric_Resistance is Mks_Type
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with
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Dimension => ("Ω",
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Meter => 2,
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Kilogram => 1,
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Second => -3,
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Ampere => -2,
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others => 0);
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subtype Electric_Conductance is Mks_Type
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with
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Dimension => ('S',
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Meter => -2,
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Kilogram => -1,
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Second => 3,
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Ampere => 2,
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others => 0);
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subtype Magnetic_Flux is Mks_Type
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with
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Dimension => ("Wb",
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Meter => 2,
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Kilogram => 1,
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Second => -2,
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Ampere => -1,
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others => 0);
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subtype Magnetic_Flux_Density is Mks_Type
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with
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Dimension => ('T',
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Kilogram => 1,
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Second => -2,
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Ampere => -1,
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others => 0);
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subtype Inductance is Mks_Type
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with
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Dimension => ('H',
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Meter => 2,
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Kilogram => 1,
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Second => -2,
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Ampere => -2,
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others => 0);
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subtype Celsius_Temperature is Mks_Type
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with
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Dimension => ("°C",
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Kelvin => 1,
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others => 0);
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subtype Luminous_Flux is Mks_Type
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with
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Dimension => ("lm",
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Candela => 1,
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others => 0);
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subtype Illuminance is Mks_Type
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with
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Dimension => ("lx",
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Meter => -2,
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Candela => 1,
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others => 0);
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subtype Radioactivity is Mks_Type
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with
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Dimension => ("Bq",
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Second => -1,
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others => 0);
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subtype Absorbed_Dose is Mks_Type
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with
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Dimension => ("Gy",
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Meter => 2,
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Second => -2,
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others => 0);
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subtype Equivalent_Dose is Mks_Type
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with
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Dimension => ("Sv",
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Meter => 2,
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Second => -2,
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others => 0);
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subtype Catalytic_Activity is Mks_Type
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with
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Dimension => ("kat",
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Second => -1,
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Mole => 1,
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others => 0);
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rad : constant Angle := 1.0;
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sr : constant Solid_Angle := 1.0;
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Hz : constant Frequency := 1.0;
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N : constant Force := 1.0;
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Pa : constant Pressure := 1.0;
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J : constant Energy := 1.0;
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W : constant Power := 1.0;
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C : constant Electric_Charge := 1.0;
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V : constant Electric_Potential_Difference := 1.0;
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F : constant Electric_Capacitance := 1.0;
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Ohm : constant Electric_Resistance := 1.0;
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Si : constant Electric_Conductance := 1.0;
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Wb : constant Magnetic_Flux := 1.0;
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T : constant Magnetic_Flux_Density := 1.0;
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H : constant Inductance := 1.0;
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dC : constant Celsius_Temperature := 273.15;
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lm : constant Luminous_Flux := 1.0;
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lx : constant Illuminance := 1.0;
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Bq : constant Radioactivity := 1.0;
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Gy : constant Absorbed_Dose := 1.0;
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Sv : constant Equivalent_Dose := 1.0;
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kat : constant Catalytic_Activity := 1.0;
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-- SI prefixes for Meter
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um : constant Length := 1.0E-06; -- micro (u)
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mm : constant Length := 1.0E-03; -- milli
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cm : constant Length := 1.0E-02; -- centi
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dm : constant Length := 1.0E-01; -- deci
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dam : constant Length := 1.0E+01; -- deka
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hm : constant Length := 1.0E+02; -- hecto
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km : constant Length := 1.0E+03; -- kilo
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Mem : constant Length := 1.0E+06; -- mega
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-- SI prefixes for Kilogram
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ug : constant Mass := 1.0E-09; -- micro (u)
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mg : constant Mass := 1.0E-06; -- milli
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cg : constant Mass := 1.0E-05; -- centi
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dg : constant Mass := 1.0E-04; -- deci
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g : constant Mass := 1.0E-03; -- gram
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dag : constant Mass := 1.0E-02; -- deka
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hg : constant Mass := 1.0E-01; -- hecto
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Meg : constant Mass := 1.0E+03; -- mega
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-- SI prefixes for Second
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us : constant Time := 1.0E-06; -- micro (u)
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ms : constant Time := 1.0E-03; -- milli
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cs : constant Time := 1.0E-02; -- centi
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ds : constant Time := 1.0E-01; -- deci
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das : constant Time := 1.0E+01; -- deka
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hs : constant Time := 1.0E+02; -- hecto
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ks : constant Time := 1.0E+03; -- kilo
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Mes : constant Time := 1.0E+06; -- mega
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-- Other constants for Second
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min : constant Time := 60.0 * s;
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hour : constant Time := 60.0 * min;
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day : constant Time := 24.0 * hour;
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year : constant Time := 365.25 * day;
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-- SI prefixes for Ampere
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mA : constant Electric_Current := 1.0E-03; -- milli
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cA : constant Electric_Current := 1.0E-02; -- centi
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dA : constant Electric_Current := 1.0E-01; -- deci
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daA : constant Electric_Current := 1.0E+01; -- deka
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hA : constant Electric_Current := 1.0E+02; -- hecto
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kA : constant Electric_Current := 1.0E+03; -- kilo
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MeA : constant Electric_Current := 1.0E+06; -- mega
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end System.Dim.Mks;
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