From 0ee07d662a898ddadb1f85342a89a88ac0732e11 Mon Sep 17 00:00:00 2001
From: Denis Molony <dmolony@iinet.net.au>
Date: Thu, 21 Jul 2016 21:08:28 +1000
Subject: [PATCH] handle NaN

---
 src/com/bytezone/diskbrowser/visicalc/Cell.java       | 4 +++-
 src/com/bytezone/diskbrowser/visicalc/Count.java      | 1 +
 src/com/bytezone/diskbrowser/visicalc/Expression.java | 1 +
 3 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/com/bytezone/diskbrowser/visicalc/Cell.java b/src/com/bytezone/diskbrowser/visicalc/Cell.java
index 3aa2f9f..a41ffe9 100644
--- a/src/com/bytezone/diskbrowser/visicalc/Cell.java
+++ b/src/com/bytezone/diskbrowser/visicalc/Cell.java
@@ -125,6 +125,8 @@ class Cell implements Comparable<Cell>, Value
           return justify (value.getText (), colWidth);
 
         Double thisValue = value.getValue ();
+        if (thisValue.isNaN ())
+          return justify ("NaN", colWidth);
 
         char format = cellFormat != ' ' ? cellFormat : defaultFormat;
         if (format == 'I')
@@ -213,7 +215,7 @@ class Cell implements Comparable<Cell>, Value
   {
     if (!isValue ())
     {
-      //      System.out.println ("Not a value");
+      //      System.out.println (value);
       return this;
     }
     assert isValue () : "Cell type: " + type + " @ " + address;
diff --git a/src/com/bytezone/diskbrowser/visicalc/Count.java b/src/com/bytezone/diskbrowser/visicalc/Count.java
index 278bd02..312989d 100644
--- a/src/com/bytezone/diskbrowser/visicalc/Count.java
+++ b/src/com/bytezone/diskbrowser/visicalc/Count.java
@@ -31,6 +31,7 @@ class Count extends Function
       if (cell.getValue () != 0.0)
         value++;
     }
+
     return this;
   }
 }
\ No newline at end of file
diff --git a/src/com/bytezone/diskbrowser/visicalc/Expression.java b/src/com/bytezone/diskbrowser/visicalc/Expression.java
index 4d58b3c..18b45da 100644
--- a/src/com/bytezone/diskbrowser/visicalc/Expression.java
+++ b/src/com/bytezone/diskbrowser/visicalc/Expression.java
@@ -272,6 +272,7 @@ class Expression implements Value
       else if (text.charAt (ptr) == '(')
         ++depth;
     }
+
     return text.substring (0, ptr + 1);   // include closing parenthesis
   }