#[unsafe(no_mangle)]pub extern "C" fn synthetic_instrument_calculate(
synth: &mut SyntheticInstrument_API,
inputs_ptr: &CVec,
) -> Price
#[unsafe(no_mangle)]pub extern "C" fn synthetic_instrument_calculate(
synth: &mut SyntheticInstrument_API,
inputs_ptr: &CVec,
) -> Price