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Function `std.random.uniformDistribution`

Generates a uniform probability distribution of size n, i.e., an array of size n of positive numbers of type F that sum to 1. If useThis is provided, it is used as storage.


						
				F[] uniformDistribution(F)
				(
				

				  size_t n,
				

				  F[] useThis = null
				

				)
				

				if (isFloatingPoint!F);

Example

import std.algorithm.iteration : reduce;
import std.math : approxEqual;

auto a = uniformDistribution(5);
writeln(a.length); // 5
assert(approxEqual(reduce!"a + b"(a), 1));

a = uniformDistribution(10, a);
writeln(a.length); // 10
assert(approxEqual(reduce!"a + b"(a), 1));

Authors

Andrei Alexandrescu Masahiro Nakagawa (Xorshift random generator) Joseph Rushton Wakeling (Algorithm D for random sampling) Ilya Yaroshenko (Mersenne Twister implementation, adapted from mir-random)

License

Boost License 1.0.