You may be interested in this crate which adds decimal types https://crates.io/crates/rust_decimal https://crates.io/crates/rust_decimal. Here is another that I

You may be interested in this crate which adds decimal types https://crates.io/crates/rust_decimal https://crates.io/crates/rust_decimal. Here is another that I have not used but appears to add a f128 type https://crates.io/crates/f128 https://crates.io/crates/f128.