Add fmt::Display impl to Real

types/src/number/real.rs

@@ -2,6 +2,7 @@
  * Eryn Wells <eryn@erynwells.me>
  */
 
+use std::fmt;
 use super::*;
 use number::math::*;
 
@@ -111,6 +112,16 @@ impl PartialEq for Real {
     }
 }
 
+impl fmt::Display for Real {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        match *self {
+            Real::Integer(v) => write!(f, "{}", v),
+            Real::Rational(p, q) => write!(f, "{}/{}", p, q),
+            Real::Irrational(v) => write!(f, "{}", v),
+        }
+    }
+}
+
 #[cfg(test)]
 mod tests {
     mod integers {