Data commit

Task/Arithmetic-geometric-mean/Rust/arithmetic-geometric-mean.rust

@@ -0,0 +1,31 @@
+// Accepts two command line arguments
+// cargo run --name agm arg1 arg2
+
+fn main () {
+    let mut args = std::env::args();
+
+    let x = args.nth(1).expect("First argument not specified.").parse::<f32>().unwrap();
+    let y = args.next().expect("Second argument not specified.").parse::<f32>().unwrap();
+
+    let result = agm(x,y);
+    println!("The arithmetic-geometric mean is {}", result);
+}
+
+fn agm (x: f32, y: f32) -> f32 {
+    let e: f32 = 0.000001;
+    let mut a = x;
+    let mut g = y;
+    let mut a1: f32;
+    let mut g1: f32;
+
+    if a * g < 0f32 { panic!("The arithmetric-geometric mean is undefined for numbers less than zero!"); }
+    else {
+        loop {
+            a1 = (a + g) / 2.;
+            g1 = (a * g).sqrt();
+            a = a1;
+            g = g1;
+            if (a - g).abs() < e {  return a; }
+        }
+    }
+}