Ref T215, PQ integer support

src/blackmisc/pq/physicalquantity.cpp

@@ -318,10 +318,25 @@ namespace BlackMisc
         int CPhysicalQuantity<MU, PQ>::valueInteger(MU unit) const
         {
             Q_ASSERT_X(!unit.isNull(), Q_FUNC_INFO, "Cannot convert to null");
-            double v = unit.roundValue(this->value(unit), 0);
+            const double v = unit.roundValue(this->value(unit), 0);
             return static_cast<int>(v);
         }
 
+        template<class MU, class PQ>
+        int CPhysicalQuantity<MU, PQ>::valueInteger() const
+        {
+            return this->valueInteger(m_unit);
+        }
+
+        template<class MU, class PQ>
+        bool CPhysicalQuantity<MU, PQ>::isInteger() const
+        {
+            if (this->isNull()) { return false; }
+
+            const double diff = std::abs(this->value() - this->valueInteger());
+            return diff <= m_unit.getEpsilon();
+        }
+
         template <class MU, class PQ>
         double CPhysicalQuantity<MU, PQ>::valueRounded(int digits) const
         {

src/blackmisc/pq/physicalquantity.h

@@ -107,6 +107,12 @@ namespace BlackMisc
             //! As integer value
             int valueInteger(MU unit) const;
 
+            //! As integer value in current unit
+            int valueInteger() const;
+
+            //! Is value an integer
+            bool isInteger() const;
+
             //! Rounded value in current unit
             //! \note default digits is CMeasurementUnit::getDisplayDigits
             double valueRounded(int digits = -1) const;