hopper-finance

DeFi math primitives for Hopper programs: constant-product swaps, LP math, slippage checks, and price bounds. Pure functions, no_std, no_alloc, and BPF-safe.

Part of the Hopper framework.

Every public helper uses checked u128 intermediates and returns an explicit ProgramError on overflow or invalid bounds. Use it when the protocol logic needs predictable math without pulling in an allocator.

use hopper_finance::{check_slippage, constant_product_out};

let amount_out = constant_product_out(
    amount_in,
    reserve_in,
    reserve_out,
    fee_bps,
)?;
check_slippage(amount_out, minimum_out)?;

Docs: https://docs.rs/crate/hopper-finance/0.2.0

Support: solanadevdao.sol / F42ZovBoRJZU4av5MiESVwJWnEx8ZQVFkc1RM29zMxNT.

License: Apache-2.0.