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fill in Deterministic impl of RngCore

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Pat Hickey
2021-02-01 16:25:31 -08:00
parent e9ad3611f6
commit f17bff5490
1 changed files with 8 additions and 2 deletions
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10
crates/wasi-common/src/random.rs
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@@ -15,10 +15,16 @@ impl Deterministic {
impl RngCore for Deterministic {
fn next_u32(&mut self) -> u32 {
todo!()
let b0 = self.cycle.next().expect("infinite sequence");
let b1 = self.cycle.next().expect("infinite sequence");
let b2 = self.cycle.next().expect("infinite sequence");
let b3 = self.cycle.next().expect("infinite sequence");
((b0 as u32) << 24) + ((b1 as u32) << 16) + ((b2 as u32) << 8) + (b3 as u32)
}
fn next_u64(&mut self) -> u64 {
todo!()
let w0 = self.next_u32();
let w1 = self.next_u32();
((w0 as u64) << 32) + (w1 as u64)
}
fn fill_bytes(&mut self, buf: &mut [u8]) {
for b in buf.iter_mut() {