Functional NegBin implementaion

NegBin/main.cpp

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+#include <iostream>
+#include "NegBin.h"
+
+int main()
+{
+    NegBin a = 0b11011_nb;
+    NegBin b = 0b10010_nb;
+
+    std::cout << a << "-" << b << " = " << a-b << std::endl;
+    std::cout << a << "*" << 5 << " = " << a*5 << std::endl;
+
+    auto c = NegBin(6);
+    auto d = NegBin(-12);
+
+    std::cout << "6 is " << c << std::endl;
+    std::cout << "-12 is " << d << std::endl;
+
+
+    return 0;
+}