finance_solution/returns/mod.rs
1//! Educational doubling-time helpers: Rule of 72 / 69 / 70 and exact formulas.
2//!
3//! Use [`doubling_solution`] for a full comparison at one rate (formulas + table),
4//! or [`doubling_compare_rates`] to see how approximations behave across rates.
5//!
6//! All public functions return [`crate::FinanceResult`] (Result-only API, v0.1+).
7pub mod rule_of_72;
8
9#[doc(inline)]
10pub use rule_of_72::*;