From f34eb76357fdfc314d6451fd11a2e4d6fcfce434 Mon Sep 17 00:00:00 2001
From: Mike Buland <mike@xagasoft.com>
Date: Mon, 15 Apr 2013 15:28:12 -0600
Subject: Initial checkin.

This project will most likely just be stuck into libbu++, but I didn't
want to deal with building it all in windows.
---
 src/number.cpp | 54 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 54 insertions(+)
 create mode 100644 src/number.cpp

(limited to 'src/number.cpp')

diff --git a/src/number.cpp b/src/number.cpp
new file mode 100644
index 0000000..e64be94
--- /dev/null
+++ b/src/number.cpp
@@ -0,0 +1,54 @@
+#include "number.h"
+
+#include <bu/sio.h>
+
+#define iRadix  (10)
+
+Number::Number( int iOrd ) : 
+    iOrd( iOrd ),
+    aInt( 4 )
+{
+}
+
+Number::Number( const Bu::String &sData, int iOrd ) :
+    iOrd( iOrd ),
+    aInt( 4 )
+{
+    for( int j = sData.getSize()-1; j >= 0; j-- )
+        aInt.append( sData[j]-'0' );
+}
+
+Number::~Number()
+{
+}
+
+Number Number::operator+( const Number &rhs ) const
+{
+    Number ret( iOrd );
+
+    int iPlaces = Bu::buMax(rhs.aInt.getSize(), aInt.getSize() )+1;
+
+    int iCarry = 0;
+    for( int j = 0; j < iPlaces; j++ )
+    {
+        int iRes = iCarry + digit( j ) + rhs.digit( j );
+        Bu::println(" Place: %1 + %2 + (%3) = %4").
+            arg( digit(j) ).arg( rhs.digit( j ) ).arg( iCarry )
+            .arg( iRes );
+        ret.aInt.append( (iRes%iRadix) );
+        if( iRes < iRadix )
+            iCarry = 0;
+        else
+            iCarry = iRes/iRadix;
+    }
+
+    return ret;
+}
+
+int Number::digit( int iOrder ) const
+{
+    if( iOrder >= aInt.getSize() )
+        return 0;
+    return aInt[iOrder];
+}
+
-- 
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