Add Sample Functions to Library

Source/Library.rs

@@ -1,3 +1,23 @@
-pub fn Hello() {
-    println!("Hello Library");
+#![allow(dead_code)]
+#![allow(unused_variables)]
+#![allow(non_snake_case)]
+
+#[no_mangle]
+pub extern "C" fn Add(num1: f32, num2: f32) -> f32 {
+    return num1 + num2;
+}
+
+#[no_mangle]
+pub extern "C" fn Subtract(num1: f32, num2: f32) -> f32 {
+    return num1 - num2;
+}
+
+#[no_mangle]
+pub extern "C" fn Multiply(num1: f32, num2: f32) -> f32 {
+    return num1 * num2;
+}
+
+#[no_mangle]
+pub extern "C" fn Divide(num1: f32, num2: f32) -> f32 {
+    return num1 / num2;
 }