661e225862
bigint: fix float conversions The default implementations of to_f32, to_f64, from_32 and from_f64 are limited to numbers fitting in i64 but BigInt can of course be much bigger. The default to_f32 also has double rounding. from_f32 and from_f64 have undefined behaviour if the float is too big to fit in an i64. This fixes these issues and keeps the rounding consistant with other float to int conversions. Also add ToBigUint and ToBigInt implementations for f32 and f64. Currently this returns None if the BigInt is too big for to_f32 and to_f64 but it might make more sense to return Some(INFINITY) but I've decided to match f64::to_f32() for now.
num
A collection of numeric types and traits for Rust.
This includes new types for big integers, rationals, and complex numbers, new traits for generic programming on numeric properties like `Integer, and generic range iterators.
Usage
Add this to your Cargo.toml:
[dependencies]
num = "0.1"
and this to your crate root:
extern crate num;