FA-62082 / Currency rounding and FX conversion / Member archive

The pip size is chosen by searching the pair text for JPY · case 02

JPY-base pairs get yen pips while forint and won pairs get four-decimal pips.

Member previewVariant 2 · 3 implementations · 8 checks per implementation

Case contract

solve(pair, spot, points, notional): pair is BASEQUOTE. The pip exponent depends on the quote currency: JPY 2, HUF 2, KRW 0, otherwise 4 (pip = 10**-exp). points is a decimal string of pips (fractional pips allowed, negative for discount). forward = spot + points*pip rounded half-even to exp+1 decimals (one fractional pip). The pip value in quote currency is notional*pip rounded half-even to 2 decimals. Return [forward, pip_value] as plain strings.

Why this case matters

Currency amounts must be rounded at the right stage and in the right unit, or ledgers, quotes and settlements drift by minor units.

One recorded failure

Sample boundary fixture

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

Boundary fixture	Actual	Expected	Outcome
regression pip-scale-lookup 1	`["395.11996", "25.00"]`	`["395.116", "2500.00"]`	Failed

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