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#[cfg(any(feature = "v4", feature = "v7"))]
pub(crate) fn bytes() -> [u8; 16] {
#[cfg(not(feature = "fast-rng"))]
{
let mut bytes = [0u8; 16];
getrandom::getrandom(&mut bytes).unwrap_or_else(|err| {
// NB: getrandom::Error has no source; this is adequate display
panic!("could not retrieve random bytes for uuid: {}", err)
});
bytes
}
#[cfg(feature = "fast-rng")]
{
rand::random()
}
}
#[cfg(any(feature = "v1", feature = "v6"))]
pub(crate) fn u16() -> u16 {
#[cfg(not(feature = "fast-rng"))]
{
let mut bytes = [0u8; 2];
getrandom::getrandom(&mut bytes).unwrap_or_else(|err| {
// NB: getrandom::Error has no source; this is adequate display
panic!("could not retrieve random bytes for uuid: {}", err)
});
((bytes[0] as u16) << 8) | (bytes[1] as u16)
}
#[cfg(feature = "fast-rng")]
{
rand::random()
}
}