Module utils 

Shared numeric helpers for quote math.

Functions

add_slippage

value * (10_000 + bps) / 10_000. Saturates on the rare case the multiplication itself overflows u64.

mul_div_u128

a * b / c in u128, surfacing overflow as QuoteError::MathOverflow.

slippage_bounds

(value - delta, value + delta) with delta = value * bps / 10_000; None on overflow.

sub_slippage

value * (10_000 - bps) / 10_000. bps larger than 10_000 saturates to 0.