UniformInt

Generate a uniform random integer in $[a, b)$ using generator $r$. This draw is derived from the underlying uniform float stream.

• Range — $[a, b)$ (includes $a$, excludes $b$)
• Complexity — $O(1)$ per draw

Example (conceptual)

• Call — Rng(42).UniformInt(a, b) (conceptual name; see mapping below)
• Range — integer in $[0, 100)$ or $[-50, 50)$

Implementation names

$\operatorname{UniformInt}$ draws are derived from the same generator core as $\operatorname{UniformFloat}$ and map a uniform 64-bit value into $[a, b)$. The implementation uses modulo reduction; ranges that do not divide $2^{64}$ introduce a slight bias (acceptable for simulation, not for cryptographic use). See UniformFloat → Algorithm for the core generator details.

Unsigned variants are available in languages that support them.