feat: Update dependencies and add contract annotation

MathieuSoysal · Mar 5, 2024 · 935463d · 935463d
1 parent 9863c96
commit 935463d
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Showing 2 changed files with 7 additions and 2 deletions.
diff --git a/Cargo.toml b/Cargo.toml
@@ -10,5 +10,5 @@ edition = "2021"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
-[dev-dependencies]
+[dependencies]
 prusti-contracts = "0.2.0"
diff --git a/src/lib.rs b/src/lib.rs
@@ -1,13 +1,18 @@
 #![feature(test)]
 extern crate test;
 
+use prusti_contracts::*;
+
+const MAX_FIBONACCI: u32 = 2_971_215_073;
+
 pub fn play_game(n: u32) {
     println!("{}", fizz_buzz_fibonacci(n));
 }
 
+#[trusted]
 fn is_fibonacci_number(n: u32) -> bool {
     let (mut previous, mut current) = (0, 1);
-    while current < n && n <= 2971215073 {
+    while current < n && n <= MAX_FIBONACCI {
         let next = previous + current;
         previous = current;
         current = next;