Line data    Source code

       1             : //# StokesUtil.cc:  
       2             : //# Copyright (C) 1996,1999
       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: casa-feedback@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             : #include <casacore/casa/aips.h>
      29             : #include <synthesis/MeasurementEquations/StokesUtil.h>
      30             : #include <casacore/casa/Arrays/IPosition.h>
      31             : #include <casacore/casa/Arrays/Vector.h>
      32             : #include <casacore/casa/Arrays/ArrayLogical.h>
      33             : 
      34             : using namespace casacore;
      35             : namespace casa { //# NAMESPACE CASA - BEGIN
      36             : 
      37           0 : Array<StokesVector> operator* (const Array<Float> &farray, 
      38             :                                const StokesVector &sv){
      39           0 :   Array<StokesVector> svarray(farray.shape());
      40           0 :   uInt nelem = farray.nelements();
      41           0 :   IPosition vsize(1,nelem);
      42           0 :   Vector<StokesVector> lsvarray(svarray.reform(vsize));
      43           0 :   Vector<Float> lfarray(farray.reform(vsize));
      44           0 :   for (uInt i = 0; i < nelem; i++){
      45           0 :     lsvarray(i) = sv*lfarray(i);
      46             :   }
      47           0 :   return svarray;
      48           0 : }
      49             : 
      50           0 : Bool nearAbs(const StokesVector& val1, const StokesVector& val2, 
      51             :               Double tol){
      52           0 :   return allNearAbs(val1.vector(), val2.vector(), tol);
      53             : }
      54             : 
      55           0 : Bool near(const StokesVector& val1, const StokesVector& val2, 
      56             :           Double tol){
      57           0 :   return allNear(val1.vector(), val2.vector(), tol);
      58             : }
      59             : 
      60             : // define comparison operators on StokesVectors using their 
      61             : // length in 4-space
      62           0 : Bool operator>(const StokesVector& left,const StokesVector& right){
      63           0 :   if (innerProduct(left,left) > innerProduct(right, right))
      64           0 :     return true;
      65             :   else
      66           0 :     return false;
      67             : }
      68             : 
      69             : 
      70             : } //# NAMESPACE CASA - END
      71             :