Function cairo_lang_sierra_gas::compute_postcost_info

pub fn compute_postcost_info(
    program: &Program,
    get_ap_change_fn: &dyn Fn(&StatementIdx) -> usize,
    precost_gas_info: &GasInfo
) -> Result<GasInfo, CostError>

Calculates gas postcost information for a given program - the gas costs of step token.