diff --git a/tests/testRandom.c b/tests/testRandom.c index 417d8a3dea2d8daa18e45f9f6b2b22c2e38cc907..a0f6490a293c1857b410aa0cc92fcfa83467bd91 100644 --- a/tests/testRandom.c +++ b/tests/testRandom.c @@ -1,6 +1,7 @@ /******************************************************************************* * This file is part of SWIFT. * Copyright (C) 2019 Matthieu Schaller (schaller@strw.leidenuniv.nl) + * 2019 Folkert Nobels (nobels@strw.leidenuniv.nl) * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU Lesser General Public License as published @@ -75,8 +76,8 @@ int main(int argc, char* argv[]) { const double r = random_unit_interval(id, ti_current, random_number_star_formation); - const double r_2ndid = - random_unit_interval(idoffset, ti_current, random_number_star_formation); + const double r_2ndid = random_unit_interval(idoffset, ti_current, + random_number_star_formation); total += r; total2 += r * r; @@ -96,25 +97,31 @@ int main(int argc, char* argv[]) { const double var = total2 / (double)count - mean * mean; /* Pearson correlation calculation for different times */ - const double mean_xy = sum_previous_current / ( (double)count -1.f); - const double correlation = (mean_xy-mean*mean)/var; - + const double mean_xy = sum_previous_current / ((double)count - 1.f); + const double correlation = (mean_xy - mean * mean) / var; + /* Pearson correlation for different IDs */ const double meanID = totalID / (double)count; const double varID = total2ID / (double)count - meanID * meanID; const double meanID_xy = pearsonIDs / (double)count; - const double correlationID = (meanID_xy - mean*meanID) / pow(var * varID, .5f); + const double correlationID = + (meanID_xy - mean * meanID) / pow(var * varID, .5f); /* Verify that the mean and variance match the expected values for a uniform * distribution */ if ((fabs(mean - 0.5) / 0.5 > 2e-4) || (fabs(var - 1. / 12.) / (1. / 12.) > 1e-3) || - (fabs(correlation) > 3e-4) || - (fabs(correlationID) > 3e-4) ) { + (fabs(correlation) > 3e-4) || (fabs(correlationID) > 3e-4)) { message("Test failed!"); - message("Result: count=%d mean=%f var=%f, correlation=%f ID correlation=%f", count, mean, var, correlation, correlationID); - message("Expected: count=%d mean=%f var=%f, correlation=%f ID correlation=%f", count, 0.5f, 1. / 12., 0., 0.); + message( + "Result: count=%d mean=%f var=%f, correlation=%f ID " + "correlation=%f", + count, mean, var, correlation, correlationID); + message( + "Expected: count=%d mean=%f var=%f, correlation=%f ID " + "correlation=%f", + count, 0.5f, 1. / 12., 0., 0.); return 1; } }