I'm working on implementing R code into C++ so that it runs faster, but I am having difficulties implementing mersenne twister. I only wish to generate values between (0,1). Here is what I have that pertains to this question.
std::mt19937 generator (123);
std::cout << "Random value: " << generator() << std:: endl;
In C++11 the concepts of "(pseudo) random generator" and "probability distribution" are separated, and for good reasons.
What you want can be achieved with the following lines:
std::mt19937 generator (123); std::uniform_real_distribution<double> dis(0.0, 1.0); double randomRealBetweenZeroAndOne = dis(generator);
If you want to understand why this separation is necessary, and why using a standard division /range manipulation on the output of the generator is a bad idea, watch this video.