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430 lines
11 KiB
C++
430 lines
11 KiB
C++
/*---------------------------------------------------------------------------*\
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========= |
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\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
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\\ / O peration |
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\\ / A nd | Copyright (C) 2011-2013 OpenFOAM Foundation
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\\/ M anipulation |
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-------------------------------------------------------------------------------
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License
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This file is part of OpenFOAM.
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OpenFOAM is free software: you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with OpenFOAM. If not, see <http://www.gnu.org/licenses/>.
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Class
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Foam::dimensionSet
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Description
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Dimension set for the base types.
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This type may be used to implement rigorous dimension checking
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for algebraic manipulation.
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SourceFiles
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dimensionSet.C
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dimensionSetIO.C
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dimensionSets.C
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\*---------------------------------------------------------------------------*/
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#ifndef dimensionSet_H
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#define dimensionSet_H
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#include "bool.H"
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#include "dimensionedScalarFwd.H"
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#include "className.H"
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#include "scalarField.H"
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#include "PtrList.H"
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#include "HashTable.H"
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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namespace Foam
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{
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// Forward declaration of friend functions and operators
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class dimensionSet;
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class dimensionSets;
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// Friend functions
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dimensionSet max(const dimensionSet&, const dimensionSet&);
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dimensionSet min(const dimensionSet&, const dimensionSet&);
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dimensionSet cmptMultiply(const dimensionSet&, const dimensionSet&);
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dimensionSet cmptDivide(const dimensionSet&, const dimensionSet&);
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dimensionSet pow(const dimensionSet&, const scalar);
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dimensionSet pow(const dimensionSet&, const dimensionedScalar&);
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dimensionSet pow(const dimensionedScalar&, const dimensionSet&);
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dimensionSet sqr(const dimensionSet&);
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dimensionSet pow3(const dimensionSet&);
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dimensionSet pow4(const dimensionSet&);
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dimensionSet pow5(const dimensionSet&);
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dimensionSet pow6(const dimensionSet&);
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dimensionSet pow025(const dimensionSet&);
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dimensionSet sqrt(const dimensionSet&);
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dimensionSet cbrt(const dimensionSet&);
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dimensionSet magSqr(const dimensionSet&);
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dimensionSet mag(const dimensionSet&);
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dimensionSet sign(const dimensionSet&);
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dimensionSet pos(const dimensionSet&);
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dimensionSet neg(const dimensionSet&);
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dimensionSet inv(const dimensionSet&);
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// Function to check the argument is dimensionless
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// for transcendental functions
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dimensionSet trans(const dimensionSet&);
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// Return the argument; transformations do not change the dimensions
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dimensionSet transform(const dimensionSet&);
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// Friend operators
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dimensionSet operator-(const dimensionSet&);
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dimensionSet operator+(const dimensionSet&, const dimensionSet&);
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dimensionSet operator-(const dimensionSet&, const dimensionSet&);
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dimensionSet operator*(const dimensionSet&, const dimensionSet&);
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dimensionSet operator/(const dimensionSet&, const dimensionSet&);
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dimensionSet operator&(const dimensionSet&, const dimensionSet&);
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dimensionSet operator^(const dimensionSet&, const dimensionSet&);
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dimensionSet operator&&(const dimensionSet&, const dimensionSet&);
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// IOstream operators
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Istream& operator>>(Istream&, dimensionSet&);
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Ostream& operator<<(Ostream&, const dimensionSet&);
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/*---------------------------------------------------------------------------*\
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Class dimensionSet Declaration
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\*---------------------------------------------------------------------------*/
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class dimensionSet
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{
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public:
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// Member constants
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enum
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{
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nDimensions = 7 // Number of dimensions in SI is 7
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};
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//- Define an enumeration for the names of the dimension exponents
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enum dimensionType
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{
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MASS, // kilogram kg
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LENGTH, // metre m
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TIME, // second s
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TEMPERATURE, // Kelvin K
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MOLES, // mole mol
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CURRENT, // Ampere A
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LUMINOUS_INTENSITY // Candela Cd
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};
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// Static data members
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static const scalar smallExponent;
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private:
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// Private classes
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class tokeniser
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{
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// Private data
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Istream& is_;
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List<token> tokens_;
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label start_;
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label size_;
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// Private Member Functions
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void push(const token&);
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token pop();
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void unpop(const token&);
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public:
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// Constructors
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tokeniser(Istream&);
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// Member Functions
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Istream& stream()
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{
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return is_;
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}
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bool hasToken() const;
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token nextToken();
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void putBack(const token&);
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void splitWord(const word&);
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static bool valid(char c);
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static label priority(const token& t);
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};
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//- Reset exponents to nearest integer if close to it. Used to
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// handle reading with insufficient precision.
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void round(const scalar tol);
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dimensionedScalar parse
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(
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const label lastPrior,
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tokeniser& tis,
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const HashTable<dimensionedScalar>&
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) const;
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// private data
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// dimensionSet stored as an array of dimension exponents
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scalar exponents_[nDimensions];
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public:
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// Declare name of the class and its debug switch
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ClassName("dimensionSet");
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// Constructors
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//- Construct given individual dimension exponents for all
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// seven dimensions
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dimensionSet
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(
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const scalar mass,
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const scalar length,
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const scalar time,
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const scalar temperature,
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const scalar moles,
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const scalar current,
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const scalar luminousIntensity
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);
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//- Construct given individual dimension exponents for first
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// five dimensions
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dimensionSet
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(
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const scalar mass,
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const scalar length,
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const scalar time,
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const scalar temperature,
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const scalar moles
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);
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//- Construct from Istream
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dimensionSet(Istream&);
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// Member functions
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//- Return true if it is dimensionless
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bool dimensionless() const;
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void reset(const dimensionSet&);
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// I/O
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//- Read using provided units. Used only in initial parsing
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Istream& read
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(
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Istream& is,
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scalar& multiplier,
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const dictionary&
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);
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//- Read using provided units
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Istream& read
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(
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Istream& is,
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scalar& multiplier,
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const HashTable<dimensionedScalar>&
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);
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//- Read using system units
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Istream& read
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(
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Istream& is,
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scalar& multiplier
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);
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//- Write using provided units
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Ostream& write
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(
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Ostream& os,
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scalar& multiplier,
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const dimensionSets&
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) const;
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//- Write using system units
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Ostream& write
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(
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Ostream& os,
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scalar& multiplier
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) const;
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// Member operators
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scalar operator[](const dimensionType) const;
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scalar& operator[](const dimensionType);
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scalar operator[](const label) const;
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scalar& operator[](const label);
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bool operator==(const dimensionSet&) const;
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bool operator!=(const dimensionSet&) const;
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bool operator=(const dimensionSet&) const;
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bool operator+=(const dimensionSet&) const;
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bool operator-=(const dimensionSet&) const;
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bool operator*=(const dimensionSet&);
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bool operator/=(const dimensionSet&);
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// Friend functions
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friend dimensionSet max(const dimensionSet&, const dimensionSet&);
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friend dimensionSet min(const dimensionSet&, const dimensionSet&);
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friend dimensionSet cmptMultiply
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(
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const dimensionSet&,
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const dimensionSet&
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);
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friend dimensionSet cmptDivide
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(
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const dimensionSet&,
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const dimensionSet&
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);
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friend dimensionSet pow(const dimensionSet&, const scalar);
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friend dimensionSet pow(const dimensionSet&, const dimensionedScalar&);
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friend dimensionSet pow(const dimensionedScalar&, const dimensionSet&);
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friend dimensionSet sqr(const dimensionSet&);
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friend dimensionSet pow3(const dimensionSet&);
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friend dimensionSet pow4(const dimensionSet&);
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friend dimensionSet pow5(const dimensionSet&);
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friend dimensionSet pow6(const dimensionSet&);
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friend dimensionSet pow025(const dimensionSet&);
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friend dimensionSet sqrt(const dimensionSet&);
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friend dimensionSet magSqr(const dimensionSet&);
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friend dimensionSet mag(const dimensionSet&);
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friend dimensionSet sign(const dimensionSet&);
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friend dimensionSet pos(const dimensionSet&);
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friend dimensionSet neg(const dimensionSet&);
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friend dimensionSet inv(const dimensionSet&);
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//- Function to check the argument is dimensionless
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// for transcendental functions
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friend dimensionSet trans(const dimensionSet&);
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friend dimensionSet atan2(const dimensionSet&, const dimensionSet&);
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//- Return the argument; transformations do not change the dimensions
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friend dimensionSet transform(const dimensionSet&);
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// Friend operators
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friend dimensionSet operator-(const dimensionSet&);
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friend dimensionSet operator+
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(
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const dimensionSet&,
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const dimensionSet&
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);
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friend dimensionSet operator-
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(
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const dimensionSet&,
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const dimensionSet&
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);
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friend dimensionSet operator*
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(
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const dimensionSet&,
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const dimensionSet&
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);
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friend dimensionSet operator/
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(
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const dimensionSet&,
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const dimensionSet&
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);
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friend dimensionSet operator&
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(
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const dimensionSet&,
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const dimensionSet&
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);
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friend dimensionSet operator^
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(
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const dimensionSet&,
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const dimensionSet&
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);
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friend dimensionSet operator&&
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(
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const dimensionSet&,
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const dimensionSet&
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);
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// IOstream operators
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friend Istream& operator>>(Istream&, dimensionSet&);
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friend Ostream& operator<<(Ostream&, const dimensionSet&);
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};
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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} // End namespace Foam
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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#include "dimensionSets.H"
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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#endif
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// ************************************************************************* //
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