2 files changed, 17 insertions, 38 deletions

diff --git a/ue4/mycpu/cdatn.h b/ue4/mycpu/cdatn.h
index cd6573a..4e68f0b 100644
--- a/ue4/mycpu/cdatn.h
+++ b/ue4/mycpu/cdatn.h
@@ -68,13 +68,16 @@ class CDatN
      * @param  width   maximum width
      * @return -
      * @globalvars none
-     * @exception  none
+     * @exception  std::runtime_error
      * @pre  none
      * @post none
      */
     CDatN(const int newval, unsigned width = 31)
       : m_value(((1 << width) - 1) & newval), m_width(width)
-    {}
+    {
+      if (width < 2 || width > 32)
+        throw std::runtime_error("width must be between 2 and 32");
+    }
 
     /**
      * @method getValue
@@ -148,8 +151,7 @@ class CDatN
      */
     CDatN &operator=(const int& newval)
     {
-      m_value = newval;
-      align();
+      m_value = ((1 << m_width) - 1) & newval;
       return *this;
     }
 
@@ -165,8 +167,7 @@ class CDatN
      */
     CDatN& operator+=(const CDatN& x)
     {
-      m_value += x.m_value;
-      align();
+      m_value = ((1 << m_width) - 1) & (m_value + x.m_value);
       return *this;
     }
 
@@ -182,8 +183,7 @@ class CDatN
      */
     CDatN& operator-=(const CDatN& x)
     {
-      m_value -= x.m_value;
-      align();
+      m_value = ((1 << m_width) - 1) & (m_value - x.m_value);
       return *this;
     }
 
@@ -199,8 +199,7 @@ class CDatN
      */
     CDatN& operator*=(const CDatN& x)
     {
-      m_value *= x.m_value;
-      align();
+      m_value = ((1 << m_width) - 1) & (m_value * x.m_value);
       return *this;
     }
 
@@ -216,8 +215,7 @@ class CDatN
      */
     CDatN& operator/=(const CDatN& x)
     {
-      m_value /= x.m_value;
-      align();
+      m_value = ((1 << m_width) - 1) & (m_value / x.m_value);
       return *this;
     }
 
@@ -233,8 +231,7 @@ class CDatN
      */
     CDatN& operator%=(const CDatN& x)
     {
-      m_value %= x.m_value;
-      align();
+      m_value = ((1 << m_width) - 1) & (m_value % x.m_value);
       return *this;
     }
 
@@ -250,8 +247,7 @@ class CDatN
      */
     CDatN& operator|=(const CDatN& x)
     {
-      m_value |= x.m_value;
-      align();
+      m_value = ((1 << m_width) - 1) & (m_value | x.m_value);
       return *this;
     }
 
@@ -267,8 +263,7 @@ class CDatN
      */
     CDatN& operator&=(const CDatN& x)
     {
-      m_value &= x.m_value;
-      align();
+      m_value = ((1 << m_width) - 1) & (m_value & x.m_value);
       return *this;
     }
 
@@ -284,8 +279,7 @@ class CDatN
      */
     CDatN& operator^=(const CDatN& x)
     {
-      m_value ^= x.m_value;
-      align();
+      m_value = ((1 << m_width) - 1) & (m_value ^ x.m_value);
       return *this;
     }
 
@@ -301,8 +295,7 @@ class CDatN
      */
     CDatN& operator++()
     {
-      m_value++;
-      align();
+      m_value = ((1 << m_width) - 1) & (m_value + 1);
       return *this;
     }
 
@@ -353,25 +346,11 @@ class CDatN
     friend std::istream& operator>>(std::istream & stream, CDatN& cdat)
     {
       stream >> cdat.m_value;
-      cdat.align();
+      cdat.m_value = ((1 << cdat.m_width) - 1) & cdat.m_value;
       return stream;
     }
 
   protected:
-    /**
-     * @method align
-     * @brief  aligns value by width
-     * @return -
-     * @globalvars none
-     * @exception  none
-     * @pre  none
-     * @post bit count of m_value trimmed to width
-     */
-    inline void align()
-    {
-      m_value &= ((1 << m_width) - 1);
-    }
-
     /* members */
     /** internal value of datatype */
     int m_value;
diff --git a/ue4/mycpu/mycpu.cpp b/ue4/mycpu/mycpu.cpp
index e9525d2..aefe0cb 100644
--- a/ue4/mycpu/mycpu.cpp
+++ b/ue4/mycpu/mycpu.cpp
@@ -180,7 +180,7 @@ int main(int argc, char* argv[])
           return 1;
         }
 
-        if (bc < 2 || bc > 31)
+        if (bc < 2 || bc > 32)
         {
           cerr << me << ": Paramater 'format' must be inbetween 2 and 32." << endl;
           return 1;