boost random number library, use same random number generator for different variate generators

Question

It seems that one can use the following code to produce random numbers from a particular Normal distribution:

float mean = 0, variance = 1;
boost::mt19937 randge         


        

Answer 1

Your hypothesis is correct. You want both variate_generator instances to use the same random number generator instance. So use a reference to mt19937 as your template parameter.

variate_generator<mt19937 &, normal_distribution<float> > nD(randgen, noise1);
variate_generator<mt19937 &, normal_distribution<float> > nC(randgen, noise2);

Obviously you'll have to ensure randgen does not go out of scope before nD and nC do.