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Hospital occupancy from delayed admissions: rounding stage · case 02

Fractional admissions round to zero and small waves report empty wards.

Member previewVariant 2 · 3 implementations · 7 checks per implementation

Case contract

admissions[t] = hosp_frac*infections[t-delay] (0 before the delay); each admission occupies a bed on days t..t+los-1; return [admissions rounded 4, occupancy rounded 4, earliest peak day].

Why this case matters

Compartmental epidemic calculations drive outbreak forecasts, vaccine targets and hospital planning; a single wrong flow, rate conversion or boundary silently changes every downstream number.

One recorded failure

Sample boundary fixture

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

Boundary fixture	Actual	Expected	Outcome
regression: long stay	`[[0.0, 0.0, 3.0, 2.4, 1.8, 1.2, 0.6, 0.3], [0, 0, 3, 5, 7, 8, 9, 9], 6]`	`[[0.0, 0.0, 3.0, 2.4, 1.8, 1.2, 0.6, 0.3], [0.0, 0.0, 3.0, 5.4, 7.2, 8.4, 9.0, 9.3], 7]`	Failed

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