Mixed-decimals math without explicit scaling

Evidence summary #

Whirlpools handles SPL tokens with varying decimal counts. The sqrt_price math framework uses Q64.64 fixed-point representation as the canonical unit, providing explicit scaling across all token decimal configurations. Neodyme audit (2022-05-05) and OtterSec audit (2024-08-21) both covered mathematical correctness. No findings on decimal scaling errors reported in available summaries. Rust's type system and the audited fixed-point math library provide strong structural protection.

Sources #

Methodology #

Determine whether shared numerator/denominator arithmetic operates over tokens with different decimals without WAD/RAY normalization or explicit decimal-adjustment.

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