Initial commit udt_conversion_example.cpp

example/udt_conversion_example.cpp

@@ -0,0 +1,71 @@
+//  udt_conversion_example.cpp  --------------------------------------------------------//
+
+//  Copyright Beman Dawes 2013
+
+//  Distributed under the Boost Software License, Version 1.0.
+//  http://www.boost.org/LICENSE_1_0.txt
+
+//--------------------------------------------------------------------------------------//
+
+#define _CRT_SECURE_NO_WARNINGS
+
+#include <boost/endian/detail/disable_warnings.hpp>
+
+#include <boost/endian/converters.hpp>
+#include <iostream>
+#include <cstring>
+
+using namespace boost::endian;
+using std::cout;
+using std::endl;
+using boost::int32_t;
+
+class UDT
+{
+public:
+  UDT() : id_(0), value_(0.0) {desc_[0] = '\0';}
+  UDT(int32_t id, float value, const char* desc) : id_(id), value_(value)
+  {
+    std::strncpy(desc_, desc, sizeof(desc_)-1);
+    desc_[sizeof(desc_)-1] = '\0';
+  }
+  int32_t     id() const          {return id_;}
+  float       value() const       {return value_;}
+  const char* desc() const        {return desc_;}
+  void        id(int32_t x)       {id_ = x;}
+  void        value(float v)      {value_ = v;}
+  void        desc(const char* s)
+  {
+    std::strncpy(desc_, s, sizeof(desc_)-1);
+    desc_[sizeof(desc_-1)] = '\0';
+  }
+
+  friend void reverse(UDT&);
+
+private:
+  int32_t id_;
+  float   value_;
+  char    desc_[56];  // '/0'
+};
+
+void reverse(UDT& x)
+{
+  reverse(x.id_);
+  reverse(x.value_);
+}
+
+int main(int, char* [])
+{
+  UDT x(1, 1.2345f, "Bingo!");
+  cout << std::hex;
+  cout << x.id() << ' ' << x.value() << ' ' << x.desc() << endl;
+  reverse(x);
+  cout << x.id() << ' ' << x.value() << ' ' << x.desc() << endl;
+  reverse(x);
+  cout << x.id() << ' ' << x.value() << ' ' << x.desc() << endl;
+  big_endian(x);
+  cout << x.id() << ' ' << x.value() << ' ' << x.desc() << endl;
+
+}
+
+#include <boost/endian/detail/disable_warnings_pop.hpp>