from __future__ import annotations

TAKER_FEE_BPS_DEFAULT = 10.0  # 0.10%


def okx_fee(fee_bps: float, notional_usd: float) -> float:
    return notional_usd * (fee_bps / 1e4)


def estimate_slippage_rate(slippage_bps: float, notional_usd: float) -> float:
    return notional_usd * (slippage_bps / 1e4)