by Ricardo Fernández Serrata
Using "/dev/urandom" as source, returns a number in the interval [0, 1). The generated float has a max size of 53b (just like `random`). JS `Math.random` generates 52 random bits per call, so this flow and AM's built-in both use an extra bit (the implicit bit outside the mantissa).
Repeatedly calling this flow to generate multiple numbers is very slow. Use this instead: llamalab.com/automate/community/flows/39114
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