FA-84713 / Betting odds conversion / Member archive

Takeout kept as the net pool or divided out · case 03

Dividends are tiny, or slightly too high.

Member previewVariant 3 · 3 implementations · 8 checks per implementation

Case contract

Pari-mutuel win dividend per unit stake. The net pool is pool * (100 - takeout_pct) / 100; with a dead heat it is split equally among the winning runners. Each runner's dividend is its share divided by the stakes on it, broken down to the 10-cent step below (breakage), with a minimum of 1.10. A winner with no stakes gets None. Return dividends as "D.D0" strings in winners order.

Why this case matters

Tote operators compute dividends with takeout, breakage and minimum-dividend rules.

One recorded failure

Sample boundary fixture

This sample comes from the broken implementation of a controlled reproducer.

Boundary fixture	Actual	Expected	Outcome
control single winner	`["1.10"]`	`["3.40"]`	Failed

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