Update to rand 0.8 and release 0.4.0

Cargo.toml

@@ -8,7 +8,7 @@ categories = ["algorithms", "data-structures", "science", "no-std"]
 license = "MIT OR Apache-2.0"
 name = "num-complex"
 repository = "https://github.com/rust-num/num-complex"
-version = "0.3.1"
+version = "0.4.0"
 readme = "README.md"
 exclude = ["/bors.toml", "/ci/*", "/.github/*"]
 edition = "2018"
@@ -30,7 +30,7 @@ default-features = false
 
 [dependencies.rand]
 optional = true
-version = "0.7"
+version = "0.8"
 default-features = false
 
 [features]

README.md

@@ -13,7 +13,7 @@ Add this to your `Cargo.toml`:
 
 ```toml
 [dependencies]
-num-complex = "0.3"
+num-complex = "0.4"
 ```
 
 ## Features
@@ -23,7 +23,7 @@ the default `std` feature. Use this in `Cargo.toml`:
 
 ```toml
 [dependencies.num-complex]
-version = "0.3"
+version = "0.4"
 default-features = false
 ```
 

RELEASES.md

@@ -1,3 +1,9 @@
+# Release 0.4.0 (2021-03-05)
+
+- `rand` support has been updated to 0.8, requiring Rust 1.36.
+
+**Contributors**: @cuviper
+
 # Release 0.3.1 (2020-10-29)
 
 - Clarify the license specification as "MIT OR Apache-2.0".

src/crand.rs

@@ -42,8 +42,41 @@ where
 }
 
 #[cfg(test)]
-fn test_rng() -> StdRng {
-    StdRng::from_seed([42; 32])
+fn test_rng() -> impl RngCore {
+    /// Simple `Rng` for testing without additional dependencies
+    struct XorShiftStar {
+        a: u64,
+    }
+
+    impl RngCore for XorShiftStar {
+        fn next_u32(&mut self) -> u32 {
+            self.next_u64() as u32
+        }
+
+        fn next_u64(&mut self) -> u64 {
+            // https://en.wikipedia.org/wiki/Xorshift#xorshift*
+            self.a ^= self.a >> 12;
+            self.a ^= self.a << 25;
+            self.a ^= self.a >> 27;
+            self.a.wrapping_mul(0x2545_F491_4F6C_DD1D)
+        }
+
+        fn fill_bytes(&mut self, dest: &mut [u8]) {
+            for chunk in dest.chunks_mut(8) {
+                let bytes = self.next_u64().to_le_bytes();
+                let slice = &bytes[..chunk.len()];
+                chunk.copy_from_slice(slice)
+            }
+        }
+
+        fn try_fill_bytes(&mut self, dest: &mut [u8]) -> Result<(), rand::Error> {
+            Ok(self.fill_bytes(dest))
+        }
+    }
+
+    XorShiftStar {
+        a: 0x0123_4567_89AB_CDEF,
+    }
 }
 
 #[test]

src/lib.rs

@@ -14,7 +14,7 @@
 //!
 //! The `num-complex` crate is tested for rustc 1.31 and greater.
 
-#![doc(html_root_url = "https://docs.rs/num-complex/0.3")]
+#![doc(html_root_url = "https://docs.rs/num-complex/0.4")]
 #![no_std]
 
 #[cfg(any(test, feature = "std"))]