Additional source-header notices, retained verbatim below their source locations.

Source: src/block.rs:1
// Copyright 2018 Developers of the Rand project.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// https://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or https://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.

//! The `BlockRngCore` trait and implementation helpers
//!
//! The [`BlockRngCore`] trait exists to assist in the implementation of RNGs
//! which generate a block of data in a cache instead of returning generated
//! values directly.
//!
//! Usage of this trait is optional, but provides two advantages:
//! implementations only need to concern themselves with generation of the
//! block, not the various [`RngCore`] methods (especially [`fill_bytes`], where
//! the optimal implementations are not trivial), and this allows
//! `ReseedingRng` (see [`rand`](https://docs.rs/rand) crate) perform periodic
//! reseeding with very low overhead.
//!
//! # Example
//!
//! ```no_run
//! use rand_core::{RngCore, SeedableRng};
//! use rand_core::block::{BlockRngCore, BlockRng};
//!
//! struct MyRngCore;
//!
//! impl BlockRngCore for MyRngCore {
//!     type Item = u32;
//!     type Results = [u32; 16];
//!
//!     fn generate(&mut self, results: &mut Self::Results) {
//!         unimplemented!()
//!     }
//! }
//!
//! impl SeedableRng for MyRngCore {
//!     type Seed = [u8; 32];
//!     fn from_seed(seed: Self::Seed) -> Self {
//!         unimplemented!()
//!     }
//! }
//!
//! // optionally, also implement CryptoRng for MyRngCore
//!
//! // Final RNG.
//! let mut rng = BlockRng::<MyRngCore>::seed_from_u64(0);
//! println!("First value: {}", rng.next_u32());
//! ```
//!
//! [`BlockRngCore`]: crate::block::BlockRngCore
//! [`fill_bytes`]: RngCore::fill_bytes


Source: src/error.rs:1
// Copyright 2018 Developers of the Rand project.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// https://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or https://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.

//! Error types


Source: src/impls.rs:1
// Copyright 2018 Developers of the Rand project.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// https://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or https://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.

//! Helper functions for implementing `RngCore` functions.
//!
//! For cross-platform reproducibility, these functions all use Little Endian:
//! least-significant part first. For example, `next_u64_via_u32` takes `u32`
//! values `x, y`, then outputs `(y << 32) | x`. To implement `next_u32`
//! from `next_u64` in little-endian order, one should use `next_u64() as u32`.
//!
//! Byte-swapping (like the std `to_le` functions) is only needed to convert
//! to/from byte sequences, and since its purpose is reproducibility,
//! non-reproducible sources (e.g. `OsRng`) need not bother with it.


Source: src/le.rs:1
// Copyright 2018 Developers of the Rand project.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// https://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or https://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.

//! Little-Endian utilities
//!
//! Little-Endian order has been chosen for internal usage; this makes some
//! useful functions available.


Source: src/lib.rs:1
// Copyright 2018 Developers of the Rand project.
// Copyright 2017-2018 The Rust Project Developers.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// https://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or https://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.

//! Random number generation traits
//!
//! This crate is mainly of interest to crates publishing implementations of
//! [`RngCore`]. Other users are encouraged to use the [`rand`] crate instead
//! which re-exports the main traits and error types.
//!
//! [`RngCore`] is the core trait implemented by algorithmic pseudo-random number
//! generators and external random-number sources.
//!
//! [`SeedableRng`] is an extension trait for construction from fixed seeds and
//! other random number generators.
//!
//! [`Error`] is provided for error-handling. It is safe to use in `no_std`
//! environments.
//!
//! The [`impls`] and [`le`] sub-modules include a few small functions to assist
//! implementation of [`RngCore`].
//!
//! [`rand`]: https://docs.rs/rand


Source: src/os.rs:1
// Copyright 2019 Developers of the Rand project.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// https://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or https://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.

//! Interface to the random number generator of the operating system.


