changes

src/finum.rs

@@ -21,6 +21,9 @@ impl FiNum {
     pub fn zero() -> Self {
         FiNum(0u64)
 	}
+    pub fn one() -> Self {
+        FiNum(1u64<<32)
+        }
     pub fn is_zero(self) -> bool {
         self.0==0
 	}
@@ -30,6 +33,10 @@ impl FiNum {
     pub fn recip(&self) -> Self {
         FiNum((0x8000000000000000u64/self.0)<<1)
         }
+    pub fn fmt_recip(&self) -> String {
+       if *self<FiNum::one() { format!("1/{}",self.recip()) }
+       else { format!("{}",self) }
+       }
     pub fn serialize(&self) -> String {
         format!("{:X}",self.0)
 	}