/usr/include/casacore/casa/Quanta/MVEpoch.h is in casacore-dev 2.2.0-2.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 | //# MVEpoch.h: a class for high precision time
//# Copyright (C) 1996,1997,1998,1999,2000
//# Associated Universities, Inc. Washington DC, USA.
//#
//# This library is free software; you can redistribute it and/or modify it
//# under the terms of the GNU Library General Public License as published by
//# the Free Software Foundation; either version 2 of the License, or (at your
//# option) any later version.
//#
//# This library is distributed in the hope that it will be useful, but WITHOUT
//# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
//# FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public
//# License for more details.
//#
//# You should have received a copy of the GNU Library General Public License
//# along with this library; if not, write to the Free Software Foundation,
//# Inc., 675 Massachusetts Ave, Cambridge, MA 02139, USA.
//#
//# Correspondence concerning AIPS++ should be addressed as follows:
//# Internet email: aips2-request@nrao.edu.
//# Postal address: AIPS++ Project Office
//# National Radio Astronomy Observatory
//# 520 Edgemont Road
//# Charlottesville, VA 22903-2475 USA
//#
//#
//# $Id$
#ifndef CASA_MVEPOCH_H
#define CASA_MVEPOCH_H
//# Includes
#include <casacore/casa/aips.h>
#include <casacore/casa/Arrays/Vector.h>
#include <casacore/casa/Quanta/Quantum.h>
#include <casacore/casa/Quanta/MeasValue.h>
namespace casacore { //# NAMESPACE CASACORE - BEGIN
//# Forward Declarations
class Unit;
// <summary> A class for high precision time </summary>
// <use visibility=export>
// <reviewed reviewer="tcornwel" date="1996/02/22" tests="tMeasMath" demos="">
// </reviewed>
// <prerequisite>
// <li> <linkto class=MeasValue>MeasValue</linkto> class
// </prerequisite>
//
// <etymology>
// MVEpoch from Measure, Value and Epoch
// </etymology>
//
// <synopsis>
// MVEpoch is a class for high precision (10<sup>-16</sup> s) epochs over a
// period of 6*10<sup>10</sup> a.<br>
// MVEpochs can be compared, a time interval can be added or subtracted, and
// the time difference can be found.
// The following constructors:
// <ul>
// <li> <src>MVEpoch()</src> default; assuming 0
// <li> <src>MVEpoch(Double)</src> with time given in days
// <li> <src>MVEpoch(Double, Double=0)</src> with times given in days
// <li> <src>MVEpoch(Quantity, Quantity=0)</src> with times given
// <li> <src>MVEpoch(Quantum<Vector<Double> >)</src> with times given
// <li> <src>MVEpoch(Vector<Double>)</src> with times in days
// <li> <src>MVEpoch(Vector<Quantity>)</src> with times
// </ul>
// </synopsis>
//
// <example>
// See <linkto class=MEpoch>MEpoch</linkto>
// </example>
//
// <motivation>
// To have high precision timing
// </motivation>
//
// <todo asof="1996/02/04">
// <li> A proper high precision time, including multiplication etc should
// be considered. E.g. a multi-byte number with 6 bytes day
// and 8 bytes fractional day.
// </todo>
class MVEpoch : public MeasValue {
public:
//# Friends
//# Constructors
// Default constructor, generates default 0 epoch
MVEpoch();
// Copy constructor
MVEpoch(const MVEpoch &other);
// Constructor with time in days
// <group>
MVEpoch(Double inday, Double infrac=0);
MVEpoch(const Vector<Double> &inday);
// </group>
// Constructor with Quantities
// <group>
MVEpoch(const Quantity &in);
MVEpoch(const Quantity &in1, const Quantity &in2);
MVEpoch(const Quantum<Vector<Double> > &in);
MVEpoch(const Vector<Quantity> &in);
// </group>
//# Destructor
~MVEpoch();
//# Operators
// Copy assignment
MVEpoch &operator=(const MVEpoch &other);
// Add times
// <group>
MVEpoch &operator+=(const MVEpoch &other);
MVEpoch operator+(const MVEpoch &other) const;
// </group>
// Difference times
// <group>
MVEpoch &operator-=(const MVEpoch &other);
MVEpoch operator-(const MVEpoch &other) const;
// </group>
// Comparisons
// <group>
Bool operator==(const MVEpoch &other) const;
Bool operator!=(const MVEpoch &other) const;
Bool near(const MVEpoch &other, Double tol = 1e-13) const;
Bool nearAbs(const MVEpoch &other, Double tol = 1e-13) const;
// </group>
//# General Member Functions
// Constants
static const Double secInDay;
static const Unit unitDay;
// Tell me your type
// <group>
virtual uInt type() const;
static void assure(const MeasValue &in);
// </group>
// Adjust the time to its constituent parts. The returned result is always 1.0
// <group>
virtual void adjust();
virtual void adjust(Double &res);
// </group>
// Get value in days
Double get() const;
// Get value with units
// <group>
Quantity getTime() const;
Quantity getTime(const Unit &unit) const;
// </group>
// Get value of integer days
Double getDay() const;
// Get fraction of days
Double getDayFraction() const;
// Print a value
virtual void print(ostream &os) const;
// Clone a value
virtual MeasValue *clone() const;
// Get the value in internal units
virtual Vector<Double> getVector() const;
// Set the value from internal units (set 0 for empty vector)
virtual void putVector(const Vector<Double> &in);
// Get the internal value as a <src>Vector<Quantity></src>. Usable in
// records. The getXRecordValue() gets additional information for records.
// Note that the Vectors could be empty.
// <group>
virtual Vector<Quantum<Double> > getRecordValue() const;
// </group>
// Set the internal value if correct values and dimensions
virtual Bool putValue(const Vector<Quantum<Double> > &in);
private:
//# Data members
// Whole days
// Note that if higher precision is needed, the splitting could be in
// 0.001 days and fractions thereof
Double wday;
// Fraction of days
Double frday;
//# Member functions
// Make days from quantity
Double makeDay(const Quantity &in) const;
// Add time from days
void addTime(Double in);
};
//# Global functions
} //# NAMESPACE CASACORE - END
#endif
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