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Updated again cosmotoolbox

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This commit is contained in:
Guilhem Lavaux 2013-02-19 11:30:03 -05:00
parent e41c26a46c
commit e44d51442d
14 changed files with 195 additions and 332 deletions
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50
external/cosmotool/sample/test_fft_calls.cpp vendored
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@ -1,12 +1,58 @@
#include <boost/format.hpp>
#include "yorick.hpp"
#include <gsl/gsl_rng.h>
#include <iostream>
#include <cmath>
#include "fourier/euclidian.hpp"
using namespace CosmoTool;
using boost::format;
using boost::str;
using namespace std;
int main()
double spectrum_generator(double k)
{
EuclidianFourierTransform_2d<double> dft(128,128,1.0,1.0);
if (k==0)
return 0;
return 1/(0.01+pow(k, 3.0));
}
template<typename T>
void test_2d(int Nx, int Ny)
{
EuclidianFourierTransform_2d<T> dft(Nx,Ny,1.0,1.0);
EuclidianSpectrum_1D<T> spectrum(spectrum_generator);
double volume = Nx*Ny;
gsl_rng *rng = gsl_rng_alloc(gsl_rng_default);
dft.realSpace().eigen().setRandom();
dft.fourierSpace().scale(std::complex<T>(0,0));
dft.analysis();
cout << format("Testing (%d,%d)") % Nx % Ny << endl;
cout << "Map dot-product = " << dft.realSpace().dot_product(dft.realSpace()) << endl;
cout << "Fourier dot-product = " << dft.fourierSpace().dot_product(dft.fourierSpace()).real()*volume << endl;
dft.synthesis();
cout << "Resynthesis dot-product = " << dft.realSpace().dot_product(dft.realSpace()) << endl;
dft.realSpace().scale(2.0);
dft.fourierSpace().scale(0.2);
spectrum.newRandomFourier(rng, dft.fourierSpace());
dft.synthesis();
uint32_t dims[2] = { Ny, Nx };
CosmoTool::saveArray(str(format("generated_map_%d_%d.nc") %Nx % Ny) , dft.realSpace().data(), dims, 2);
gsl_rng_free(rng);
}
int main(int argc, char **argv)
{
test_2d<double>(128,128);
test_2d<double>(131,128);
test_2d<double>(130,128);
test_2d<float>(128,128);
test_2d<float>(128,131);
test_2d<float>(128,130);
return 0;
}