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-rw-r--r--rand/rand_core/src/le.rs68
1 files changed, 0 insertions, 68 deletions
diff --git a/rand/rand_core/src/le.rs b/rand/rand_core/src/le.rs
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index 266651f..0000000
--- a/rand/rand_core/src/le.rs
+++ /dev/null
@@ -1,68 +0,0 @@
-// 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.
-
-use core::ptr;
-
-macro_rules! read_slice {
- ($src:expr, $dst:expr, $size:expr, $which:ident) => {{
- assert_eq!($src.len(), $size * $dst.len());
-
- unsafe {
- ptr::copy_nonoverlapping(
- $src.as_ptr(),
- $dst.as_mut_ptr() as *mut u8,
- $src.len());
- }
- for v in $dst.iter_mut() {
- *v = v.$which();
- }
- }};
-}
-
-/// Reads unsigned 32 bit integers from `src` into `dst`.
-/// Borrowed from the `byteorder` crate.
-#[inline]
-pub fn read_u32_into(src: &[u8], dst: &mut [u32]) {
- read_slice!(src, dst, 4, to_le);
-}
-
-/// Reads unsigned 64 bit integers from `src` into `dst`.
-/// Borrowed from the `byteorder` crate.
-#[inline]
-pub fn read_u64_into(src: &[u8], dst: &mut [u64]) {
- read_slice!(src, dst, 8, to_le);
-}
-
-#[test]
-fn test_read() {
- let bytes = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16];
-
- let mut buf = [0u32; 4];
- read_u32_into(&bytes, &mut buf);
- assert_eq!(buf[0], 0x04030201);
- assert_eq!(buf[3], 0x100F0E0D);
-
- let mut buf = [0u32; 3];
- read_u32_into(&bytes[1..13], &mut buf); // unaligned
- assert_eq!(buf[0], 0x05040302);
- assert_eq!(buf[2], 0x0D0C0B0A);
-
- let mut buf = [0u64; 2];
- read_u64_into(&bytes, &mut buf);
- assert_eq!(buf[0], 0x0807060504030201);
- assert_eq!(buf[1], 0x100F0E0D0C0B0A09);
-
- let mut buf = [0u64; 1];
- read_u64_into(&bytes[7..15], &mut buf); // unaligned
- assert_eq!(buf[0], 0x0F0E0D0C0B0A0908);
-}