/usr/include/casacore/scimath/Functionals/GaussianND.tcc 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 | //# GaussianND.cc: GaussianND class
//# Copyright (C) 1996,1998,1999,2001,2002
//# 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.
//#
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//# Postal address: AIPS++ Project Office
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//# $Id$
#ifndef SCIMATH_GAUSSIANND_TCC
#define SCIMATH_GAUSSIANND_TCC
#include <casacore/scimath/Functionals/GaussianND.h>
#include <casacore/casa/Arrays/ArrayMath.h>
#include <casacore/casa/Arrays/MatrixMath.h>
#include <casacore/casa/Arrays/ArrayLogical.h>
#include <casacore/casa/Exceptions/Error.h>
#include <casacore/casa/BasicMath/Math.h>
namespace casacore { //# NAMESPACE CASACORE - BEGIN
template<class T>
T GaussianND<T>::eval(typename Function<T>::FunctionArg x) const {
Vector<T> norm(itsDim);
for (uInt i=0; i<itsDim; i++) norm[i] = x[i] - param_p[CENTER+i];
T exponent(0);
for (uInt i=0, k=0; i<itsDim; i++) {
for (uInt j=i+1; j<itsDim; j++) {
exponent += norm[i]*norm[j]*param_p[CENTER+itsDim+itsDim+k++];
}
}
exponent *= 2;
for (uInt i=0; i<itsDim; i++) {
exponent += norm[i]*norm[i]*param_p[CENTER+itsDim+i];
}
return param_p[HEIGHT] * exp(-exponent/T(2));
}
} //# NAMESPACE CASACORE - END
#endif
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