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macro_rules! crate_code_name { () => { "kib" }}
macro_rules! crate_version { () => { "1.1.0" }}
pub const CRATE_NAME: &'static str = "KiB";
pub const CRATE_CODE_NAME: &'static str = crate_code_name!();
pub const CRATE_VERSION: &'static str = crate_version!();
pub const CRATE_RELEASE_DATE: (u16, u8, u8) = (2019, 1, 8);
pub const UUID: &'static str = "b8d5bfc5-806f-41d3-b2d6-478381b63188";
pub const TAG: &'static str = concat!(crate_code_name!(), "::1b50d15b::", crate_version!());
pub const KIB: u16 = 1024;
pub const MIB: u32 = 1024 * KIB as u32;
pub const GIB: u32 = 1024 * MIB;
pub const TIB: u64 = 1024 * GIB as u64;
pub const PIB: u64 = 1024 * TIB;
pub const EIB: u64 = 1024 * PIB;
pub const ZIB: u128 = 1024 * EIB as u128;
pub const YIB: u128 = 1024 * ZIB;
const UNITS: [&'static str; 8] = ["KiB", "MiB", "GiB", "TiB", "PiB", "EiB", "ZiB", "YiB"];
pub fn format(bytes: impl Into<u128>) -> String {
let (bytes, unit) = format2(bytes.into());
format!("{}{}{}", bytes, ' ', unit)
}
pub fn format2(bytes: impl Into<u128>) -> (String, String) {
let bytes = bytes.into();
if bytes < KIB as u128 {
return (
bytes.to_string(),
format!("byte{}", match bytes { 1 => "", _ => "s" }),
);
}
let nearest_power = ((bytes as f64).log2() / 10.0).floor() as usize;
let unit_index = nearest_power.min(UNITS.len()).saturating_sub(1);
(
format!("{:.2}", bytes as f64 / (KIB as f64).powf(unit_index as f64 + 1.0)),
UNITS[unit_index].into()
)
}