From 0bec74b18cc66227ff7072e6ac402c14d1a162cc Mon Sep 17 00:00:00 2001
From: Adam Wick <awick@uhsure.com>
Date: Sat, 27 Oct 2018 15:01:16 -0700
Subject: [PATCH] Clean up the code around zero handling.

---
 src/signed/base.rs | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/signed/base.rs b/src/signed/base.rs
index 8612e3b..68906f0 100644
--- a/src/signed/base.rs
+++ b/src/signed/base.rs
@@ -8,12 +8,20 @@ macro_rules! signed_impls {
 
         impl $sname {
             pub fn new(negative: bool, value: $name) -> $sname {
+                if value.is_zero() {
+                    $sname{ negative: false, value: value }
+                } else {
                 $sname{ negative: negative, value: value }
             }
+            }
  
             pub fn negate(&self) -> $sname {
+                if self.value.is_zero() {
+                    self.clone()
+                } else {
                 $sname{ negative: !self.negative, value: self.value.clone() }
             }
+            }
  
             pub fn abs(&self) -> $sname {
                 $sname{ negative: false, value: self.value.clone() }