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Imported latest snapshot of cosmotoolbox

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Guilhem Lavaux 2013-02-19 11:18:20 -05:00
parent a53a757d5a
commit e41c26a46c
12 changed files with 1497 additions and 0 deletions
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63
external/cosmotool/src/fourier/details/healpix_utility.hpp vendored Normal file
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#ifndef __COSMOTOOL_FOURIER_HEALPIX_DETAILS_SPECTRUM_HP
#define __COSMOTOOL_FOURIER_HEALPIX_DETAILS_SPECTRUM_HP
namespace CosmoTool
{
template<typename T>
class HealpixUtilityFunction: public MapUtilityFunction<T>
{
public:
typedef typename MapUtilityFunction<T>::Spectrum Spectrum;
typedef typename MapUtilityFunction<T>::Spectrum_ptr Spectrum_ptr;
typedef typename MapUtilityFunction<T>::FMap FMap;
typedef typename HealpixSpectrum<T>::LType LType;
Spectrum_ptr estimateSpectrumFromMap(const FMap& m) const
{
const HealpixFourierALM<T>& alms = dynamic_cast<const HealpixFourierALM<T>&>(m);
LType Lmax = alms.Lmax(), Mmax = alms.Mmax();
HealpixSpectrum<T> *spectrum = new HealpixSpectrum<T>(Lmax);
T *data_cls = spectrum->data();
const std::complex<T> *data_alms = alms.data();
// make an estimate of the cls
std::fill(data_cls, data_cls+Lmax+1, 0);
LType q = 0;
for (LType m = 0; m <= Mmax; ++m )
{
for (LType l = m; l <= Lmax; ++l)
{
// Triangular storage
data_cls[l] += std::norm(data_alms[l+q]);
}
q += Lmax+1-m;
}
assert(q==alms.size());
for (LType l = 0; l <= Lmax; ++l)
{
int dof = 1 + std::min(l, Mmax);
spectrum->set_dof(l, dof);
data_cls[l] /= dof;
}
return Spectrum_ptr(spectrum);
}
Spectrum_ptr newSpectrumFromRaw(T *data, long size,
const Spectrum& like_spec) const
{
const HealpixSpectrum<T>& in_spec = dynamic_cast<const HealpixSpectrum<T>&>(like_spec);
HealpixSpectrum<T> *new_spectrum = new HealpixSpectrum<T>(in_spec.Lmax());
T *out_d = new_spectrum->data();
std::copy(data, data + min(size,new_spectrum->size()), out_d);
return Spectrum_ptr(new_spectrum);
}
};
};
#endif