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Imported healpix tree

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Guilhem Lavaux 2012-10-30 13:56:48 -04:00
parent 4182c30485
commit 4bfb62f177
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132
external/healpix/Healpix_cxx/powspec.cc vendored Normal file
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/*
* This file is part of Healpix_cxx.
*
* Healpix_cxx is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* Healpix_cxx 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Healpix_cxx; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
* For more information about HEALPix, see http://healpix.jpl.nasa.gov
*/
/*
* Healpix_cxx is being developed at the Max-Planck-Institut fuer Astrophysik
* and financially supported by the Deutsches Zentrum fuer Luft- und Raumfahrt
* (DLR).
*/
/*
* Copyright (C) 2003-2010 Max-Planck-Society
* Author: Martin Reinecke
*/
#include "powspec.h"
#include "lsconstants.h"
using namespace std;
void PowSpec::dealloc()
{
tt_.dealloc();
gg_.dealloc();
cc_.dealloc();
tg_.dealloc();
tc_.dealloc();
gc_.dealloc();
}
void PowSpec::assertArraySizes() const
{
planck_assert((num_specs==1) || (num_specs==4) || (num_specs==6),
"incorrect number of spectral components");
if (num_specs==1)
planck_assert(multiequal(tsize(0),gg_.size(),cc_.size(),tg_.size(),
tc_.size(),gc_.size()), "incorrect array sizes");
if (num_specs==4)
{
planck_assert(multiequal(tt_.size(),gg_.size(),cc_.size(),tg_.size()),
"incorrect array sizes");
planck_assert(multiequal(tsize(0),tc_.size(),gc_.size()),
"incorrect array sizes");
}
if (num_specs==6)
planck_assert(multiequal(tt_.size(),gg_.size(),cc_.size(),tg_.size(),
tc_.size(),gc_.size()), "incorrect array sizes");
}
bool PowSpec::consistentAutoPowspec() const
{
for (tsize l=0; l<tt_.size(); ++l)
if (tt_[l]<0) return false;
if (num_specs>=4)
for (tsize l=0; l<tt_.size(); ++l)
{
if (gg_[l]<0) return false;
if (cc_[l]<0) return false;
if (abs(tg_[l])>sqrt(tt_[l]*gg_[l])) return false;
}
if (num_specs==6)
for (tsize l=0; l<tt_.size(); ++l)
{
if (abs(tc_[l])>sqrt(tt_[l]*cc_[l])) return false;
if (abs(gc_[l])>sqrt(gg_[l]*cc_[l])) return false;
}
return true;
}
void PowSpec::Set(arr<double> &tt_new)
{
dealloc();
num_specs = 1;
tt_.transfer(tt_new);
//FIXME: temporarily relaxed to allow cross-spectra
if (!consistentAutoPowspec())
cerr << "Warning: negative values in TT spectrum" << endl;
}
void PowSpec::Set(arr<double> &tt_new, arr<double> &gg_new,
arr<double> &cc_new, arr<double> &tg_new)
{
dealloc();
num_specs = 4;
tt_.transfer(tt_new); gg_.transfer(gg_new);
cc_.transfer(cc_new); tg_.transfer(tg_new);
assertArraySizes();
}
void PowSpec::Set(arr<double> &tt_new, arr<double> &gg_new, arr<double> &cc_new,
arr<double> &tg_new, arr<double> &tc_new, arr<double> &gc_new)
{
Set (tt_new, gg_new, cc_new, tg_new);
num_specs = 6;
tc_.transfer(tc_new); gc_.transfer(gc_new);
assertArraySizes();
}
void PowSpec::smoothWithGauss (double fwhm)
{
planck_assert (num_specs<=4, "not yet implemented for num_specs>4");
double sigma = fwhm*fwhm2sigma;
double fact_pol = exp(2*sigma*sigma);
for (tsize l=0; l<tt_.size(); ++l)
{
double f1 = exp(-.5*l*(l+1)*sigma*sigma);
double f2 = f1*fact_pol;
tt_[l] *= f1*f1;
if (num_specs>1)
{
gg_[l] *= f2*f2;
cc_[l] *= f2*f2;
tg_[l] *= f1*f2;
}
}
}