Function re_format::approximate_large_number

pub fn approximate_large_number(number: f64) -> String

Pretty format a large number by using SI notation (base 10), e.g.

assert_eq!(approximate_large_number(123 as _), "123");
assert_eq!(approximate_large_number(12_345 as _), "12k");
assert_eq!(approximate_large_number(1_234_567 as _), "1.2M");
assert_eq!(approximate_large_number(123_456_789 as _), "123M");

Prefer to use format_uint, which outputs an exact string, while still being readable thanks to half-width spaces used as thousands-separators.