// 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 #include #include #include 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