optimize piSwap and c++11 improvments

lib/main/core/pibase.h

@@ -255,9 +255,15 @@ typedef unsigned long long ullong;
 typedef long long llong;
 typedef long double ldouble;
 
+#ifdef PIP_CXX11_SUPPORT
+#define piMove(v) std::move(v)
+#else
+#define piMove(v) v
+#endif
+
 /*! \brief Templated function for swap two values
  * \details Example:\n \snippet piincludes.cpp swap */
-template<typename T> inline void piSwap(T & f, T & s) {T t = f; f = s; s = t;}
+template<typename T> inline void piSwap(T & f, T & s) {T t(piMove(f)); f = piMove(s); s = piMove(t);}
 
 /*! \brief Templated function for swap two values without "="
  * \details Example:\n \snippet piincludes.cpp swapBinary */
@@ -294,6 +300,10 @@ template<> inline void piSwapBinary(const void *& f, const void *& s) {
 	}
 }
 
+template<> inline void piSwap(double & f, double & s) {piSwapBinary<double>(f, s);}
+template<> inline void piSwap(ldouble & f, ldouble & s) {piSwapBinary<ldouble>(f, s);}
+
+
 /*! \brief Function for compare two values without "=" by raw content
  * \details Example:\n \snippet piincludes.cpp compareBinary */
 inline bool piCompareBinary(const void * f, const void * s, size_t size) {