Description
In processor.ts, percentage-based rule amounts use JavaScript floating-point arithmetic. IEEE 754 representation can produce imprecise results (e.g. 0.1 * 0.2 = 0.020000000000000004). While Stellar rounds to 7 decimal places, intermediate precision loss can cause edge cases where execAmount > paymentAmountXLM, incorrectly triggering the skip guard.
Expected Behavior
Use integer arithmetic (stroops) for all financial calculations. 1 XLM = 10,000,000 stroops. Convert to stroops before arithmetic, convert back to XLM strings for submission.
Impact
Low - Amounts are off by at most 1 stroop (0.0000001 XLM), but financial software must use exact arithmetic.
Description
In processor.ts, percentage-based rule amounts use JavaScript floating-point arithmetic. IEEE 754 representation can produce imprecise results (e.g. 0.1 * 0.2 = 0.020000000000000004). While Stellar rounds to 7 decimal places, intermediate precision loss can cause edge cases where execAmount > paymentAmountXLM, incorrectly triggering the skip guard.
Expected Behavior
Use integer arithmetic (stroops) for all financial calculations. 1 XLM = 10,000,000 stroops. Convert to stroops before arithmetic, convert back to XLM strings for submission.
Impact
Low - Amounts are off by at most 1 stroop (0.0000001 XLM), but financial software must use exact arithmetic.