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KaiserBParam.h
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1 //# KaiserBParam.h: A one dimensional Kaiser-Bessel function
2 //# Copyright (C) 2002,2005
3 //# Associated Universities, Inc. Washington DC, USA.
4 //#
5 //# This library is free software; you can redistribute it and/or modify it
6 //# under the terms of the GNU Library General Public License as published by
7 //# the Free Software Foundation; either version 2 of the License, or (at your
8 //# option) any later version.
9 //#
10 //# This library is distributed in the hope that it will be useful, but WITHOUT
11 //# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 //# FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public
13 //# License for more details.
14 //#
15 //# You should have received a copy of the GNU Library General Public License
16 //# along with this library; if not, write to the Free Software Foundation,
17 //# Inc., 675 Massachusetts Ave, Cambridge, MA 02139, USA.
18 //#
19 //# Correspondence concerning AIPS++ should be addressed as follows:
20 //# Internet email: aips2-request@nrao.edu.
21 //# Postal address: AIPS++ Project Office
22 //# National Radio Astronomy Observatory
23 //# 520 Edgemont Road
24 //# Charlottesville, VA 22903-2475 USA
25 //#
26 //# $Id$
27 
28 #ifndef SCIMATH_KAISERBPARAM_H
29 #define SCIMATH_KAISERBPARAM_H
30 
31 //# Includes
32 #include <casacore/casa/aips.h>
35 
36 namespace casacore { //# NAMESPACE CASACORE - BEGIN
37 
38 //# Forward declarations
39 
40 // <summary> A one dimensional Kaiser-Bessel function
41 // </summary>
42 
43 // <use visibility=local>
44 
45 // <reviewed reviewer="" date="" tests="tFunctionHolder"
46 // demos="">
47 // </reviewed>
48 
49 // <prerequisite>
50 // <li> <linkto class="FunctionParam">FunctionParam</linkto> class
51 // <li> <linkto class="Function">Function</linkto> class
52 // </prerequisite>
53 
54 // <etymology>
55 // A Kaiser-Bessel function
56 // </etymology>
57 
58 // <synopsis>
59 // A <src>Kaiser-Bessel</src> is described by a height, a center, a width
60 // (halfwidth) and a parameter.
61 // The parameters are enumerated by HEIGHT, CENTER, WIDTH, KBPAR. They have
62 // default values of (1, 0, 1, 2.5).
63 // </synopsis>
64 //
65 // <example>
66 // <srcblock>
67 // KaiserBFunction<Double> sf;
68 // sf(0); // = 1.0
69 // </srcblock>
70 // </example>
71 
72 // <templating arg=T>
73 // <li> T should have standard numerical operators
74 // </templating>
75 
76 // <thrown>
77 // <li> AipsError if incorrect parameter number specified.
78 // </thrown>
79 
80 template<class T> class KaiserBParam : public Function<T>
81 {
82 public:
83  //# Enumerations
84  // Parameter numbers
85  enum { HEIGHT=0, CENTER, WIDTH, KBPAR };
86 
87  //# Constructors
88  // Constructs the KaiserB, Defaults:
89  // height=1, center=0, width=1, kbpar=2.5.
90  // <note role=warning> Could not use default arguments
91  // that worked both with gcc and IRIX </note>
92  // <group>
93  KaiserBParam();
94  explicit KaiserBParam(const T &kbpar);
95  // </group>
96 
97  // Copy constructor (deep copy)
98  KaiserBParam(const KaiserBParam<T> &other);
99 
100  // Copy assignment (deep copy)
102  template <class W>
104  Function<T>(other) {}
105 
106  // Destructor
107  virtual ~KaiserBParam();
108 
109  //# Operators
110  virtual uInt ndim() const { return 1; }
111 
112  //# Member functions
113  // Give name of function
114  virtual const String &name() const { static String x("kaiserbessel");
115  return x; }
116 
117 
118  //# Make members of parent classes known.
119 protected:
120  using Function<T>::param_p;
121 };
122 
123 
124 } //# NAMESPACE CASACORE - END
125 
126 #ifndef CASACORE_NO_AUTO_TEMPLATES
127 #include <casacore/scimath/Functionals/KaiserBParam.tcc>
128 #endif //# CASACORE_NO_AUTO_TEMPLATES
129 #endif
KaiserBParam(const KaiserBParam< W > &other)
Definition: KaiserBParam.h:103
virtual ~KaiserBParam()
Destructor.
virtual const String & name() const
Give name of function.
Definition: KaiserBParam.h:114
A one dimensional Kaiser-Bessel function.
Definition: KaiserBParam.h:80
KaiserBParam< T > & operator=(const KaiserBParam< T > &other)
Copy assignment (deep copy)
Numerical functional interface class.
Definition: GenericL2Fit.h:46
virtual uInt ndim() const
Returns the number of dimensions of function.
Definition: KaiserBParam.h:110
String: the storage and methods of handling collections of characters.
Definition: String.h:225
KaiserBParam()
Constructs the KaiserB, Defaults: height=1, center=0, width=1, kbpar=2.5.
unsigned int uInt
Definition: aipstype.h:51