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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) 2011-2013, 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. --
-- --
------------------------------------------------------------------------------
-- 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 => (
(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'));
-- SI Base dimensioned subtypes
subtype Length is Mks_Type
with
Dimension => (Symbol => 'm',
Meter => 1,
others => 0);
subtype Mass is Mks_Type
with
Dimension => (Symbol => "kg",
Kilogram => 1,
others => 0);
subtype Time is Mks_Type
with
Dimension => (Symbol => 's',
Second => 1,
others => 0);
subtype Electric_Current is Mks_Type
with
Dimension => (Symbol => 'A',
Ampere => 1,
others => 0);
subtype Thermodynamic_Temperature is Mks_Type
with
Dimension => (Symbol => 'K',
Kelvin => 1,
others => 0);
subtype Amount_Of_Substance is Mks_Type
with
Dimension => (Symbol => "mol",
Mole => 1,
others => 0);
subtype Luminous_Intensity is Mks_Type
with
Dimension => (Symbol => "cd",
Candela => 1,
others => 0);
-- Initialize SI Base unit values
-- Turn off the all the dimension warnings for these basic assignments
-- since otherwise we would get complaints about assigning dimensionless
-- values to dimensioned subtypes (we can't assign 1.0*m to m).
pragma Warnings (Off, "*assumed to be*");
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;
pragma Warnings (On, "*assumed to be*");
-- SI Derived dimensioned subtypes
subtype Absorbed_Dose is Mks_Type
with
Dimension => (Symbol => "Gy",
Meter => 2,
Second => -2,
others => 0);
subtype Angle is Mks_Type
with
Dimension => (Symbol => "rad",
others => 0);
subtype Area is Mks_Type
with
Dimension => (
Meter => 2,
others => 0);
subtype Catalytic_Activity is Mks_Type
with
Dimension => (Symbol => "kat",
Second => -1,
Mole => 1,
others => 0);
subtype Celsius_Temperature is Mks_Type
with
Dimension => (Symbol => "°C",
Kelvin => 1,
others => 0);
subtype Electric_Capacitance is Mks_Type
with
Dimension => (Symbol => 'F',
Meter => -2,
Kilogram => -1,
Second => 4,
Ampere => 2,
others => 0);
subtype Electric_Charge is Mks_Type
with
Dimension => (Symbol => 'C',
Second => 1,
Ampere => 1,
others => 0);
subtype Electric_Conductance is Mks_Type
with
Dimension => (Symbol => 'S',
Meter => -2,
Kilogram => -1,
Second => 3,
Ampere => 2,
others => 0);
subtype Electric_Potential_Difference is Mks_Type
with
Dimension => (Symbol => 'V',
Meter => 2,
Kilogram => 1,
Second => -3,
Ampere => -1,
others => 0);
subtype Electric_Resistance is Mks_Type
with
Dimension => (Symbol => "Ω",
Meter => 2,
Kilogram => 1,
Second => -3,
Ampere => -2,
others => 0);
subtype Energy is Mks_Type
with
Dimension => (Symbol => 'J',
Meter => 2,
Kilogram => 1,
Second => -2,
others => 0);
subtype Equivalent_Dose is Mks_Type
with
Dimension => (Symbol => "Sv",
Meter => 2,
Second => -2,
others => 0);
subtype Force is Mks_Type
with
Dimension => (Symbol => 'N',
Meter => 1,
Kilogram => 1,
Second => -2,
others => 0);
subtype Frequency is Mks_Type
with
Dimension => (Symbol => "Hz",
Second => -1,
others => 0);
subtype Illuminance is Mks_Type
with
Dimension => (Symbol => "lx",
Meter => -2,
Candela => 1,
others => 0);
subtype Inductance is Mks_Type
with
Dimension => (Symbol => 'H',
Meter => 2,
Kilogram => 1,
Second => -2,
Ampere => -2,
others => 0);
subtype Luminous_Flux is Mks_Type
with
Dimension => (Symbol => "lm",
Candela => 1,
others => 0);
subtype Magnetic_Flux is Mks_Type
with
Dimension => (Symbol => "Wb",
Meter => 2,
Kilogram => 1,
Second => -2,
Ampere => -1,
others => 0);
subtype Magnetic_Flux_Density is Mks_Type
with
Dimension => (Symbol => 'T',
Kilogram => 1,
Second => -2,
Ampere => -1,
others => 0);
subtype Power is Mks_Type
with
Dimension => (Symbol => 'W',
Meter => 2,
Kilogram => 1,
Second => -3,
others => 0);
subtype Pressure is Mks_Type
with
Dimension => (Symbol => "Pa",
Meter => -1,
Kilogram => 1,
Second => -2,
others => 0);
subtype Radioactivity is Mks_Type
with
Dimension => (Symbol => "Bq",
Second => -1,
others => 0);
subtype Solid_Angle is Mks_Type
with
Dimension => (Symbol => "sr",
others => 0);
subtype Speed is Mks_Type
with
Dimension => (
Meter => 1,
Second => -1,
others => 0);
subtype Volume is Mks_Type
with
Dimension => (
Meter => 3,
others => 0);
-- Initialize derived dimension values
-- Turn off the all the dimension warnings for these basic assignments
-- since otherwise we would get complaints about assigning dimensionless
-- values to dimensioned subtypes.
pragma Warnings (Off, "*assumed to be*");
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
pragma Warnings (On, "*assumed to be*");
end System.Dim.Mks;