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