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Billable weight: half inches rounded to even · case 05

A 12.5 inch side is measured as 12 inches, under-billing dimensional weight.

Member previewVariant 5 · 3 implementations · 8 checks per implementation

Case contract

dims inches (each rounded half up to a whole inch), actual lb rounded up (minimum 1). Dim weight = ceil(L*W*H/divisor) using rounded dims, only when the rounded cube exceeds 1728 cubic inches. Return [billable, "DIM"] if dim weight strictly exceeds rounded actual, else [actual, "ACTUAL"].

Why this case matters

Carriers bill the greater of actual and dimensional weight before zone rating.

One recorded failure

Sample boundary fixture

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

Boundary fixture	Actual	Expected	Outcome
generated mix 51	`[15, "DIM"]`	`[16, "DIM"]`	Failed

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