test_normal_dist.cpp File Reference

#include <iostream>
#include <map>
#include <iomanip>
#include "Distributions.h"
#include "../utility/testing_macros.hpp"

Include dependency graph for test_normal_dist.cpp:

Go to the source code of this file.

Functions
int	main (int argc, const char *argv[])
int	test_normal_dist ()

Function Documentation

int main	(	int	argc,
		const char *	argv[]
	)

Definition at line 59 of file test_normal_dist.cpp.

References test_normal_dist().

{
   test_normal_dist();
    return 0;
}

Here is the call graph for this function:

int test_normal_dist

(

)

Definition at line 26 of file test_normal_dist.cpp.

References ASSERT_DOUBLE_EQ.

Referenced by main().

{

    moose::MOOSE_RANDOM_DEVICE rd;
    moose::MOOSE_RNG_DEFAULT_ENGINE gen;
    gen.seed( 10 );

    moose::MOOSE_NORMAL_DISTRIBUTION<double> d(0, 1);

    std::map<int, int> hist{};
    std::vector<double> dist;
    for(int n=0; n<100000; ++n)
    {
        double x = d(gen);
        dist.push_back( x );
        ++hist[ std::round(x) ];
    }

    for(auto p : hist) {
        std::cout << std::setw(2)
                  << p.first << ' ' << std::string(p.second/200, '*') << '\n';
    }

    ASSERT_DOUBLE_EQ( "NORMALDIST", hist[-3], 542 );
    ASSERT_DOUBLE_EQ( "NORMALDIST", hist[-2], 5987 );
    ASSERT_DOUBLE_EQ( "NORMALDIST", hist[-1], 24262 );
    ASSERT_DOUBLE_EQ( "NORMALDIST", hist[0],  38236 );
    ASSERT_DOUBLE_EQ( "NORMALDIST", hist[1],  24386 );
    ASSERT_DOUBLE_EQ( "NORMALDIST", hist[2],  6071 );

    return 0;
}

Here is the caller graph for this function: