Xorshift Generator

The Xorshift Generator provides deterministic pseudo-random sequences suitable for non-security scenarios. It targets developers, QA teams, data scientists, and researchers who need quick, repeatable values for unit tests, simulations, and procedural content. The tool emphasizes simplicity, speed, and a small footprint, enabling embedding in CI pipelines, game logic, or embedded systems without relying on external services or heavy libraries.

Conceptual operation is based on simple bitwise transitions. Each variant uses a state that evolves through XOR and shift operations, producing new values that appear random while remaining fully deterministic from the initial seed. Variants differ in state size and output mapping: xorshift32 (32-bit state), xorshift64* (64-bit state with a multiplying output step), and xorshift128+ (two-word state with addition-based output).

Core features include seed input, bit-width selection, variant choice, and a requested count of output values. Optional features cover raw or normalized outputs, exporting to common formats, and advanced reseeding controls. The tool ensures values stay within the chosen width and warns when seeds are prone to short cycles. It remains deterministic when configuration and seeds are fixed.

Use cases span software testing, simulation modeling, performance benchmarking, and reproducible research. By fixing the seed and variant, teams can reproduce results across machines and runtimes. The tool intentionally avoids cryptographic security; it is not suitable for encryption, key generation, or security-sensitive randomness. It provides transparent, auditable behavior that supports controlled experiments and repeatable development workflows.