rust/src/lib/rand.rs

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/**
* Bindings the runtime's random number generator (ISAAC).
*/
native "rust" mod rustrt {
type rctx;
fn rand_new() -> rctx;
fn rand_next(rctx c) -> u32;
fn rand_free(rctx c);
}
type rng = obj { fn next() -> u32; };
fn mk_rng() -> rng {
obj rt_rng(rustrt.rctx c) {
fn next() -> u32 {
ret rustrt.rand_next(c);
}
drop {
rustrt.rand_free(c);
}
}
ret rt_rng(rustrt.rand_new());
}