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ConvertScalar.h
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1 //# ConvertScalar.h: Templated functions to convert scalars
2 //# Copyright (C) 2000,2002
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 CASA_CONVERTSCALAR_H
29 #define CASA_CONVERTSCALAR_H
30 
31 //# Includes
32 #include <casacore/casa/aips.h>
34 
35 namespace casacore { //# NAMESPACE CASACORE - BEGIN
36 
37 // <summary>
38 // Templated functions to convert scalars from one type to another.
39 // </summary>
40 // <reviewed reviewer="UNKNOWN" date="before2004/08/25" tests="" demos="">
41 // </reviewed>
42 
43 // <synopsis>
44 // Templated functions to convert scalars from one type to another.
45 // They are useful to be able to convert a DComplex to a Complex
46 // in templated classes.
47 // A Complex,DComplex specialisation is necessary because the complex
48 // class in the standard C++ library does not have such an automatic
49 // conversion.
50 // </synopsis>
51 
52 // <group name="Scalar conversion">
53 template<class T, class F> inline void convertScalar (T& out, F in)
54  { out = static_cast<T>(in); }
55 inline void convertScalar (Complex& out, DComplex in)
56  { out = Complex(in.real(), in.imag()); }
57 // </group>
58 
59 
60 } //# NAMESPACE CASACORE - END
61 
62 #endif
void convertScalar(T &out, F in)