pub const KB: usize = 1000;
pub const MB: usize = KB * KB;
pub const GB: usize = MB * KB;
pub const TB: usize = GB * KB;
pub const PB: usize = TB * KB;
pub const ZB: usize = PB * KB;
pub const B: usize = 512;
pub const K: usize = 1024;
pub const M: usize = K * K;
pub const G: usize = M * K;
pub const T: usize = G * K;
pub const P: usize = T * K;
pub const Z: usize = P * K;
#[cfg(target_pointer_width = "64")]
pub const BITSIZE: usize = 64;
#[cfg(target_pointer_width = "32")]
pub const BITSIZE: usize = 32;