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WIP fixes/cleanup for MUSIC RNG
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parent
244f11a821
commit
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2 changed files with 292 additions and 165 deletions
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@ -7,6 +7,157 @@
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#include "random.hh"
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#include "random.hh"
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#include "random_music_wnoise_generator.hh"
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#include "random_music_wnoise_generator.hh"
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template <typename T>
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void rapid_proto_ngenic_rng(size_t res, long baseseed, music_wnoise_generator<T> &R)
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{
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LOGUSER("Invoking the N-GenIC random number generator");
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unsigned *seedtable = new unsigned[res * res];
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gsl_rng *random_generator = gsl_rng_alloc(gsl_rng_ranlxd1);
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gsl_rng_set(random_generator, baseseed);
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for (size_t i = 0; i < res / 2; i++)
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{
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size_t j;
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for (j = 0; j < i; j++)
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seedtable[i * res + j] = 0x7fffffff * gsl_rng_uniform(random_generator);
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for (j = 0; j < i + 1; j++)
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seedtable[j * res + i] = 0x7fffffff * gsl_rng_uniform(random_generator);
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for (j = 0; j < i; j++)
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seedtable[(res - 1 - i) * res + j] = 0x7fffffff * gsl_rng_uniform(random_generator);
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for (j = 0; j < i + 1; j++)
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seedtable[(res - 1 - j) * res + i] = 0x7fffffff * gsl_rng_uniform(random_generator);
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for (j = 0; j < i; j++)
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seedtable[i * res + (res - 1 - j)] = 0x7fffffff * gsl_rng_uniform(random_generator);
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for (j = 0; j < i + 1; j++)
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seedtable[j * res + (res - 1 - i)] = 0x7fffffff * gsl_rng_uniform(random_generator);
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for (j = 0; j < i; j++)
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seedtable[(res - 1 - i) * res + (res - 1 - j)] = 0x7fffffff * gsl_rng_uniform(random_generator);
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for (j = 0; j < i + 1; j++)
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seedtable[(res - 1 - j) * res + (res - 1 - i)] = 0x7fffffff * gsl_rng_uniform(random_generator);
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}
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fftw_real *rnoise = new fftw_real[res * res * (res + 2)];
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fftw_complex *knoise = reinterpret_cast<fftw_complex *>(rnoise);
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double fnorm = 1. / sqrt(res * res * res);
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// #warning need to check for race conditions below
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//#pragma omp parallel for
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for (size_t i = 0; i < res; i++)
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{
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int ii = (int)res - (int)i;
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if (ii == (int)res)
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ii = 0;
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for (size_t j = 0; j < res; j++)
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{
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gsl_rng_set(random_generator, seedtable[i * res + j]);
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for (size_t k = 0; k < res / 2; k++)
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{
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double phase = gsl_rng_uniform(random_generator) * 2 * M_PI;
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double ampl;
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do
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ampl = gsl_rng_uniform(random_generator);
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while (ampl == 0);
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if (i == res / 2 || j == res / 2 || k == res / 2)
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continue;
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if (i == 0 && j == 0 && k == 0)
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continue;
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T rp = -sqrt(-log(ampl)) * cos(phase) * fnorm;
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T ip = -sqrt(-log(ampl)) * sin(phase) * fnorm;
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if (k > 0)
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{
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RE(knoise[(i * res + j) * (res / 2 + 1) + k]) = rp;
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IM(knoise[(i * res + j) * (res / 2 + 1) + k]) = ip;
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}
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else /* k=0 plane needs special treatment */
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{
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if (i == 0)
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{
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if (j >= res / 2)
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continue;
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else
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{
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int jj = (int)res - (int)j; /* note: j!=0 surely holds at this point */
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RE(knoise[(i * res + j) * (res / 2 + 1) + k]) = rp;
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IM(knoise[(i * res + j) * (res / 2 + 1) + k]) = ip;
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RE(knoise[(i * res + jj) * (res / 2 + 1) + k]) = rp;
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IM(knoise[(i * res + jj) * (res / 2 + 1) + k]) = -ip;
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}
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}
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else
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{
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if (i >= res / 2)
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continue;
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else
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{
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int ii = (int)res - (int)i;
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if (ii == (int)res)
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ii = 0;
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int jj = (int)res - (int)j;
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if (jj == (int)res)
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jj = 0;
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RE(knoise[(i * res + j) * (res / 2 + 1) + k]) = rp;
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IM(knoise[(i * res + j) * (res / 2 + 1) + k]) = ip;
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if (ii >= 0 && ii < (int)res)
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{
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RE(knoise[(ii * res + jj) * (res / 2 + 1) + k]) = rp;
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IM(knoise[(ii * res + jj) * (res / 2 + 1) + k]) = -ip;
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}
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}
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}
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}
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}
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}
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}
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delete[] seedtable;
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//... perform FT to real space
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#ifdef FFTW3
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#ifdef SINGLE_PRECISION
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fftwf_plan plan = fftwf_plan_dft_c2r_3d(res, res, res, knoise, rnoise, FFTW_ESTIMATE);
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fftwf_execute(plan);
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fftwf_destroy_plan(plan);
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#else
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fftw_plan plan = fftw_plan_dft_c2r_3d(res, res, res, knoise, rnoise, FFTW_ESTIMATE);
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fftw_execute(plan);
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fftw_destroy_plan(plan);
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#endif
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#else
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rfftwnd_plan plan = rfftw3d_create_plan(res, res, res, FFTW_COMPLEX_TO_REAL, FFTW_ESTIMATE | FFTW_IN_PLACE);
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#ifndef SINGLETHREAD_FFTW
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rfftwnd_threads_one_complex_to_real(omp_get_max_threads(), plan, knoise, NULL);
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#else
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rfftwnd_one_complex_to_real(plan, knoise, NULL);
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#endif
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rfftwnd_destroy_plan(plan);
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#endif
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// copy to array that holds the random numbers
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#pragma omp parallel for
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for (int i = 0; i < (int)res; ++i)
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for (size_t j = 0; j < res; ++j)
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for (size_t k = 0; k < res; ++k)
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R(i, j, k) = rnoise[((size_t)i * res + j) * res + k];
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delete[] rnoise;
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}
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template <typename T>
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template <typename T>
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music_wnoise_generator<T>::music_wnoise_generator(unsigned res, unsigned cubesize, long baseseed, int *x0, int *lx)
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music_wnoise_generator<T>::music_wnoise_generator(unsigned res, unsigned cubesize, long baseseed, int *x0, int *lx)
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: res_(res), cubesize_(cubesize), ncubes_(1), baseseed_(baseseed)
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: res_(res), cubesize_(cubesize), ncubes_(1), baseseed_(baseseed)
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@ -42,22 +193,8 @@ music_wnoise_generator<T>::music_wnoise_generator(unsigned res, unsigned cubesiz
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rnums_.push_back(new Meshvar<T>(res, 0, 0, 0));
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rnums_.push_back(new Meshvar<T>(res, 0, 0, 0));
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cubemap_[0] = 0; // create dummy map index
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cubemap_[0] = 0; // create dummy map index
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register_cube(0, 0, 0);
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register_cube(0, 0, 0);
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// rapid_proto_ngenic_rng( res_, baseseed_, *this );
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}
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/*
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if( musicnoise )
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mean = fill_all();
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else
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{
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rnums_.push_back( new Meshvar<T>( res, 0, 0, 0 ) );
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cubemap_[0] = 0; // create dummy map index
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register_cube(0,0,0);
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rapid_proto_ngenic_rng( res_, baseseed_, *this );
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rapid_proto_ngenic_rng( res_, baseseed_, *this );
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}
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}
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*/
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if (zeromean)
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if (zeromean)
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{
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{
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@ -847,8 +984,7 @@ double music_wnoise_generator<T>::fill_all(void)
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register_cube(ii, jj, kk);
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register_cube(ii, jj, kk);
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}
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}
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#pragma omp parallel for reduction(+ \
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#pragma omp parallel for reduction(+ : sum)
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: sum)
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for (int i = 0; i < (int)ncubes_; ++i)
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for (int i = 0; i < (int)ncubes_; ++i)
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for (int j = 0; j < (int)ncubes_; ++j)
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for (int j = 0; j < (int)ncubes_; ++j)
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for (int k = 0; k < (int)ncubes_; ++k)
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for (int k = 0; k < (int)ncubes_; ++k)
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@ -862,9 +998,8 @@ double music_wnoise_generator<T>::fill_all(void)
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sum += fill_cube(ii, jj, kk);
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sum += fill_cube(ii, jj, kk);
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}
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}
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//... subtract mean
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//... subtract mean
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#pragma omp parallel for reduction(+ \
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#pragma omp parallel for reduction(+ : sum)
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: sum)
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for (int i = 0; i < (int)ncubes_; ++i)
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for (int i = 0; i < (int)ncubes_; ++i)
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for (int j = 0; j < (int)ncubes_; ++j)
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for (int j = 0; j < (int)ncubes_; ++j)
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for (int k = 0; k < (int)ncubes_; ++k)
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for (int k = 0; k < (int)ncubes_; ++k)
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@ -1,205 +1,197 @@
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#ifndef __RANDOM_MUSIC_WNOISE_GENERATOR_HH
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#pragma once
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#define __RANDOM_MUSIC_WNOISE_GENERATOR_HH
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#include <vector>
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#include <vector>
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#include <map>
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#include <map>
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#include "general.hh"
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#include "general.hh"
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#include "mesh.hh"
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#include "mesh.hh"
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#define DEF_RAN_CUBE_SIZE 32
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#define DEF_RAN_CUBE_SIZE 32
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/*!
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/*!
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* @brief encapsulates all things random number generator related
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* @brief encapsulates all things random number generator related
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*/
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*/
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template< typename T >
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template <typename T>
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class music_wnoise_generator
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class music_wnoise_generator
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{
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{
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public:
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public:
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unsigned
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unsigned
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res_, //!< resolution of the full mesh
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res_, //!< resolution of the full mesh
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cubesize_, //!< size of one independent random number cube
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cubesize_, //!< size of one independent random number cube
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ncubes_; //!< number of random number cubes to cover the full mesh
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ncubes_; //!< number of random number cubes to cover the full mesh
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long baseseed_; //!< base seed from which cube seeds are computed
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long baseseed_; //!< base seed from which cube seeds are computed
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protected:
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protected:
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//! vector of 3D meshes (the random number cubes) with random numbers
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//! vector of 3D meshes (the random number cubes) with random numbers
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std::vector< Meshvar<T>* > rnums_;
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std::vector<Meshvar<T> *> rnums_;
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//! map of 3D indices to cube index
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//! map of 3D indices to cube index
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std::map<size_t,size_t> cubemap_;
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std::map<size_t, size_t> cubemap_;
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typedef std::map<size_t,size_t>::iterator cubemap_iterator;
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typedef std::map<size_t, size_t>::iterator cubemap_iterator;
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protected:
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protected:
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//! register a cube with the hash map
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//! register a cube with the hash map
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void register_cube( int i, int j, int k);
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void register_cube(int i, int j, int k);
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//! fills a subcube with random numbers
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//! fills a subcube with random numbers
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double fill_cube( int i, int j, int k);
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double fill_cube(int i, int j, int k);
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//! subtract a constant from an entire cube
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//! subtract a constant from an entire cube
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void subtract_from_cube( int i, int j, int k, double val );
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void subtract_from_cube(int i, int j, int k, double val);
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//! copy random numbers from a cube to a full grid array
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//! copy random numbers from a cube to a full grid array
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template< class C >
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template <class C>
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void copy_cube( int i, int j, int k, C& dat )
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void copy_cube(int i, int j, int k, C &dat)
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{
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{
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int offi, offj, offk;
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int offi, offj, offk;
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offi = i*cubesize_;
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offi = i * cubesize_;
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offj = j*cubesize_;
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offj = j * cubesize_;
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offk = k*cubesize_;
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offk = k * cubesize_;
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i = (i+ncubes_)%ncubes_;
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i = (i + ncubes_) % ncubes_;
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j = (j+ncubes_)%ncubes_;
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j = (j + ncubes_) % ncubes_;
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k = (k+ncubes_)%ncubes_;
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k = (k + ncubes_) % ncubes_;
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size_t icube = (i*ncubes_+j)*ncubes_+k;
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size_t icube = (i * ncubes_ + j) * ncubes_ + k;
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cubemap_iterator it = cubemap_.find( icube );
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cubemap_iterator it = cubemap_.find(icube);
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if( it == cubemap_.end() )
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if (it == cubemap_.end())
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{
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{
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LOGERR("attempting to copy data from non-existing RND cube %d,%d,%d",i,j,k);
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LOGERR("attempting to copy data from non-existing RND cube %d,%d,%d", i, j, k);
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throw std::runtime_error("attempting to copy data from non-existing RND cube");
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throw std::runtime_error("attempting to copy data from non-existing RND cube");
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}
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}
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size_t cubeidx = it->second;
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size_t cubeidx = it->second;
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for( int ii=0; ii<(int)cubesize_; ++ii )
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for (int ii = 0; ii < (int)cubesize_; ++ii)
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for( int jj=0; jj<(int)cubesize_; ++jj )
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for (int jj = 0; jj < (int)cubesize_; ++jj)
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for( int kk=0; kk<(int)cubesize_; ++kk )
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for (int kk = 0; kk < (int)cubesize_; ++kk)
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dat(offi+ii,offj+jj,offk+kk) = (*rnums_[cubeidx])(ii,jj,kk);
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dat(offi + ii, offj + jj, offk + kk) = (*rnums_[cubeidx])(ii, jj, kk);
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}
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}
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//! free the memory associated with a subcube
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//! free the memory associated with a subcube
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void free_cube( int i, int j, int k );
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void free_cube(int i, int j, int k);
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//! initialize member variables and allocate memory
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//! initialize member variables and allocate memory
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void initialize( void );
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void initialize(void);
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//! fill a cubic subvolume of the full grid with random numbers
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//! fill a cubic subvolume of the full grid with random numbers
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double fill_subvolume( int *i0, int *n );
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double fill_subvolume(int *i0, int *n);
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//! fill an entire grid with random numbers
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//! fill an entire grid with random numbers
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double fill_all( void );
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double fill_all(void);
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//! fill an external array instead of the internal field
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//! fill an external array instead of the internal field
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template< class C >
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template <class C>
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double fill_all( C& dat )
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double fill_all(C &dat)
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{
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{
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double sum = 0.0;
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double sum = 0.0;
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for( int i=0; i<(int)ncubes_; ++i )
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for (int i = 0; i < (int)ncubes_; ++i)
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for( int j=0; j<(int)ncubes_; ++j )
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for (int j = 0; j < (int)ncubes_; ++j)
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for( int k=0; k<(int)ncubes_; ++k )
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for (int k = 0; k < (int)ncubes_; ++k)
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{
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{
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int ii(i),jj(j),kk(k);
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int ii(i), jj(j), kk(k);
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register_cube(ii,jj,kk);
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register_cube(ii, jj, kk);
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}
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}
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#pragma omp parallel for reduction(+:sum)
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#pragma omp parallel for reduction(+ \
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||||||
for( int i=0; i<(int)ncubes_; ++i )
|
: sum)
|
||||||
for( int j=0; j<(int)ncubes_; ++j )
|
for (int i = 0; i < (int)ncubes_; ++i)
|
||||||
for( int k=0; k<(int)ncubes_; ++k )
|
for (int j = 0; j < (int)ncubes_; ++j)
|
||||||
{
|
for (int k = 0; k < (int)ncubes_; ++k)
|
||||||
int ii(i),jj(j),kk(k);
|
{
|
||||||
|
int ii(i), jj(j), kk(k);
|
||||||
|
|
||||||
ii = (ii+ncubes_)%ncubes_;
|
ii = (ii + ncubes_) % ncubes_;
|
||||||
jj = (jj+ncubes_)%ncubes_;
|
jj = (jj + ncubes_) % ncubes_;
|
||||||
kk = (kk+ncubes_)%ncubes_;
|
kk = (kk + ncubes_) % ncubes_;
|
||||||
|
|
||||||
sum+=fill_cube(ii, jj, kk);
|
sum += fill_cube(ii, jj, kk);
|
||||||
copy_cube(ii,jj,kk,dat);
|
copy_cube(ii, jj, kk, dat);
|
||||||
free_cube(ii, jj, kk);
|
free_cube(ii, jj, kk);
|
||||||
}
|
}
|
||||||
|
|
||||||
return sum/(ncubes_*ncubes_*ncubes_);
|
return sum / (ncubes_ * ncubes_ * ncubes_);
|
||||||
}
|
}
|
||||||
|
|
||||||
//! write the number of allocated random number cubes to stdout
|
//! write the number of allocated random number cubes to stdout
|
||||||
void print_allocated( void );
|
void print_allocated(void);
|
||||||
|
|
||||||
public:
|
public:
|
||||||
|
|
||||||
//! constructor
|
//! constructor
|
||||||
music_wnoise_generator( unsigned res, unsigned cubesize, long baseseed, int *x0, int *lx );
|
music_wnoise_generator(unsigned res, unsigned cubesize, long baseseed, int *x0, int *lx);
|
||||||
|
|
||||||
//! constructor for constrained fine field
|
//! constructor for constrained fine field
|
||||||
music_wnoise_generator( music_wnoise_generator<T>& rc, unsigned cubesize, long baseseed, int *x0_=NULL, int *lx_=NULL, bool zeromean=true );
|
music_wnoise_generator(music_wnoise_generator<T> &rc, unsigned cubesize, long baseseed, int *x0_ = NULL, int *lx_ = NULL, bool zeromean = true);
|
||||||
|
|
||||||
//! constructor
|
//! constructor
|
||||||
music_wnoise_generator( unsigned res, unsigned cubesize, long baseseed, bool zeromean=true );
|
music_wnoise_generator(unsigned res, unsigned cubesize, long baseseed, bool zeromean = true);
|
||||||
|
|
||||||
|
|
||||||
//! constructor to read white noise from file
|
//! constructor to read white noise from file
|
||||||
music_wnoise_generator( unsigned res, std::string randfname, bool rndsign );
|
music_wnoise_generator(unsigned res, std::string randfname, bool rndsign);
|
||||||
|
|
||||||
|
|
||||||
//! copy constructor for averaged field (not copying) hence explicit!
|
//! copy constructor for averaged field (not copying) hence explicit!
|
||||||
explicit music_wnoise_generator( /*const*/ music_wnoise_generator <T>& rc );
|
explicit music_wnoise_generator(/*const*/ music_wnoise_generator<T> &rc);
|
||||||
|
|
||||||
//! destructor
|
//! destructor
|
||||||
~music_wnoise_generator()
|
~music_wnoise_generator()
|
||||||
{
|
{
|
||||||
for( unsigned i=0; i<rnums_.size(); ++i )
|
for (unsigned i = 0; i < rnums_.size(); ++i)
|
||||||
if( rnums_[i] != NULL )
|
if (rnums_[i] != NULL)
|
||||||
delete rnums_[i];
|
delete rnums_[i];
|
||||||
rnums_.clear();
|
rnums_.clear();
|
||||||
}
|
}
|
||||||
|
|
||||||
//! access a random number, this allocates a cube and fills it with consistent random numbers
|
//! access a random number, this allocates a cube and fills it with consistent random numbers
|
||||||
inline T& operator()( int i, int j, int k, bool fillrand=true )
|
inline T &operator()(int i, int j, int k, bool fillrand = true)
|
||||||
{
|
{
|
||||||
int ic, jc, kc, is, js, ks;
|
int ic, jc, kc, is, js, ks;
|
||||||
|
|
||||||
if( ncubes_ == 0 )
|
if (ncubes_ == 0)
|
||||||
throw std::runtime_error("music_wnoise_generator: internal error, not properly initialized");
|
throw std::runtime_error("music_wnoise_generator: internal error, not properly initialized");
|
||||||
|
|
||||||
//... determine cube
|
//... determine cube
|
||||||
ic = (int)((double)i/cubesize_ + ncubes_) % ncubes_;
|
ic = (int)((double)i / cubesize_ + ncubes_) % ncubes_;
|
||||||
jc = (int)((double)j/cubesize_ + ncubes_) % ncubes_;
|
jc = (int)((double)j / cubesize_ + ncubes_) % ncubes_;
|
||||||
kc = (int)((double)k/cubesize_ + ncubes_) % ncubes_;
|
kc = (int)((double)k / cubesize_ + ncubes_) % ncubes_;
|
||||||
|
|
||||||
size_t icube = ((size_t)ic*ncubes_+(size_t)jc)*ncubes_+(size_t)kc;
|
size_t icube = ((size_t)ic * ncubes_ + (size_t)jc) * ncubes_ + (size_t)kc;
|
||||||
|
|
||||||
cubemap_iterator it = cubemap_.find( icube );
|
cubemap_iterator it = cubemap_.find(icube);
|
||||||
|
|
||||||
if( it == cubemap_.end() )
|
if (it == cubemap_.end())
|
||||||
{
|
{
|
||||||
LOGERR("Attempting to copy data from non-existing RND cube %d,%d,%d @ %d,%d,%d",ic,jc,kc,i,j,k);
|
LOGERR("Attempting to copy data from non-existing RND cube %d,%d,%d @ %d,%d,%d", ic, jc, kc, i, j, k);
|
||||||
throw std::runtime_error("attempting to copy data from non-existing RND cube");
|
throw std::runtime_error("attempting to copy data from non-existing RND cube");
|
||||||
}
|
}
|
||||||
|
|
||||||
size_t cubeidx = it->second;
|
size_t cubeidx = it->second;
|
||||||
|
|
||||||
if( rnums_[ cubeidx ] == NULL )
|
if (rnums_[cubeidx] == NULL)
|
||||||
{
|
{
|
||||||
LOGERR("Attempting to access data from non-allocated RND cube %d,%d,%d",ic,jc,kc);
|
LOGERR("Attempting to access data from non-allocated RND cube %d,%d,%d", ic, jc, kc);
|
||||||
throw std::runtime_error("attempting to access data from non-allocated RND cube");
|
throw std::runtime_error("attempting to access data from non-allocated RND cube");
|
||||||
}
|
}
|
||||||
|
|
||||||
//... determine cell in cube
|
//... determine cell in cube
|
||||||
is = (i - ic * cubesize_ + cubesize_) % cubesize_;
|
is = (i - ic * cubesize_ + cubesize_) % cubesize_;
|
||||||
js = (j - jc * cubesize_ + cubesize_) % cubesize_;
|
js = (j - jc * cubesize_ + cubesize_) % cubesize_;
|
||||||
ks = (k - kc * cubesize_ + cubesize_) % cubesize_;
|
ks = (k - kc * cubesize_ + cubesize_) % cubesize_;
|
||||||
|
|
||||||
return (*rnums_[ cubeidx ])(is,js,ks);
|
return (*rnums_[cubeidx])(is, js, ks);
|
||||||
}
|
}
|
||||||
|
|
||||||
//! free all cubes
|
//! free all cubes
|
||||||
void free_all_mem( void )
|
void free_all_mem(void)
|
||||||
{
|
{
|
||||||
for( unsigned i=0; i<rnums_.size(); ++i )
|
for (unsigned i = 0; i < rnums_.size(); ++i)
|
||||||
if( rnums_[i] != NULL )
|
if (rnums_[i] != NULL)
|
||||||
{
|
{
|
||||||
delete rnums_[i];
|
delete rnums_[i];
|
||||||
rnums_[i] = NULL;
|
rnums_[i] = NULL;
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
};
|
};
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
#endif //__MUSIC_WNOISE_GENERATOR_HH
|
|
||||||
|
|
Loading…
Reference in a new issue