CouCouGen.js — deterministic sequence generator (not a PRNG)

Visualization of distribution and basic statistical metrics — see warning below for Dieharder test results

Real Dieharder Test Results (offline, 100M numbers)
CouCouGen FAILS bit-level tests: rank_32x32, rank_6x8, bitstream, opso, oqso, dna, count_1s_str, count_1s_byt, birthdays.
PASSES basic uniformity: operm5, parking_lot, 2dsphere, 3dsphere, squeeze, sums, runs, craps.

Use for: full 32-bit integers (games, visualizations). Avoid for: bit operations (value & 1), Monte Carlo, matrix math, cryptography.

Number of points

Download CouCouGen.js.zip Author's paper

CouCouGen — visualization

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Maximum

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Mean

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Time (ms)

Comparison table

Metric	CouCouGen	Ideal
Press "Run analysis"