Fixing percent error in monte_carlo.rs (#381)

Gathros · june128 · commit acc02898ca0c · 2018-09-14T21:32:32.000+02:00
* fixing percent error in monte_carlo.rs

* small change to monte_carlo.rs
diff --git a/contents/monte_carlo_integration/code/rust/monte_carlo.rs b/contents/monte_carlo_integration/code/rust/monte_carlo.rs
@@ -26,5 +26,5 @@ fn monte_carlo(n: i64) -> f64 {
 fn main() {
     let pi_estimate = monte_carlo(10000000);
 
-    println!("Percent error is {:.3}%", (100.0 * (PI - pi_estimate) / PI));
+    println!("Percent error is {:.3}%", (100.0 * (pi_estimate - PI).abs() / PI));
 }

Original file line number	Diff line number	Diff line change
`@@ -26,5 +26,5 @@ fn monte_carlo(n: i64) -> f64 {`
`26`	`26`	`fn main() {`
`27`	`27`	`let pi_estimate = monte_carlo(10000000);`
`28`	`28`
`29`		`- println!("Percent error is {:.3}%", (100.0 * (PI - pi_estimate) / PI));`
	`29`	`+ println!("Percent error is {:.3}%", (100.0 * (pi_estimate - PI).abs() / PI));`
`30`	`30`	`}`