ship generated workspace files for the benefit of non-Linux users

[rust-101.git] / workspace / src / part08.rs

diff --git a/workspace/src/part08.rs b/workspace/src/part08.rs
new file mode 100644 (file)
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--- /dev/null
+++ b/workspace/src/part08.rs
@@ -0,0 +1,38 @@
+// ***Remember to enable/add this part in `main.rs`!***
+
+// Rust-101, Part 08: Associated Types, Modules
+// ============================================
+
+use std::cmp;
+use std::ops;
+use std::fmt;
+use part05::BigInt;
+
+// Add with carry, returning the sum and the carry
+fn overflowing_add(a: u64, b: u64, carry: bool) -> (u64, bool) {
+    let sum = u64::wrapping_add(a, b);
+    if sum >= a { // first addition did not overflow
+        unimplemented!()
+    } else { // first addition *did* overflow
+        unimplemented!()
+    }
+}
+
+/*#[test]*/
+fn test_overflowing_add() {
+    assert_eq!(overflowing_add(10, 100, false), (110, false));
+    assert_eq!(overflowing_add(10, 100, true), (111, false));
+    assert_eq!(overflowing_add(1 << 63, 1 << 63, false), (0, true));
+    assert_eq!(overflowing_add(1 << 63, 1 << 63, true), (1, true));
+    assert_eq!(overflowing_add(1 << 63, (1 << 63) -1 , true), (0, true));
+}
+
+impl ops::Add for BigInt {
+    type Output = BigInt;
+    fn add(self, rhs: BigInt) -> Self::Output {
+        let mut result_vec:Vec<u64> = Vec::with_capacity(cmp::max(self.data.len(), rhs.data.len()));
+        unimplemented!()
+    }
+}
+
+// [index](main.html) | [previous](part07.html) | [next](main.html)