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use crate::Rng;
impl Rng for fn(&mut [u8]) {
#[inline]
fn next_u32(&mut self) -> u32 {
let mut value = 0;
self(dataview::bytes_mut(&mut value));
value
}
#[inline]
fn next_u64(&mut self) -> u64 {
let mut value = 0;
self(dataview::bytes_mut(&mut value));
value
}
#[inline]
fn fill_u32(&mut self, buffer: &mut [u32]) {
self(dataview::bytes_mut(buffer))
}
#[inline]
fn fill_u64(&mut self, buffer: &mut [u64]) {
self(dataview::bytes_mut(buffer))
}
#[inline]
fn fill_bytes(&mut self, buffer: &mut [u8]) {
self(buffer)
}
#[inline]
fn jump(&mut self) {
}
}
cfg_if::cfg_if! {
if #[cfg(feature = "getrandom")] {
#[inline]
pub fn getentropy(buffer: &mut [u8]) {
if let Err(_) = ::getrandom::getrandom(buffer) {
getentropy_not_ready()
}
}
}
else {
#[inline]
pub fn getentropy(buffer: &mut [u8]) {
if !unsafe { getentropy_raw(buffer.as_mut_ptr(), buffer.len()) } {
getentropy_not_ready()
}
}
extern "C" {
fn getentropy_raw(buffer_ptr: *mut u8, buffer_len: usize) -> bool;
}
}
}
#[cold]
fn getentropy_not_ready() -> ! {
panic!("getentropy not ready")
}