80 lines
2.2 KiB
C++
80 lines
2.2 KiB
C++
// udt_conversion_example.cpp --------------------------------------------------------//
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// Copyright Beman Dawes 2013
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// Distributed under the Boost Software License, Version 1.0.
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// http://www.boost.org/LICENSE_1_0.txt
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//--------------------------------------------------------------------------------------//
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#include <boost/endian/detail/disable_warnings.hpp>
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#include <boost/endian/conversion.hpp>
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#include <iostream>
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#include <cstring>
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using namespace boost::endian;
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using std::cout;
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using std::endl;
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using boost::int32_t;
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using boost::int64_t;
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namespace user
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{
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class UDT
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{
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public:
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UDT() : id_(0), value_(0) {desc_[0] = '\0';}
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UDT(int32_t id, int64_t value, const char* desc) : id_(id), value_(value)
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{
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std::strncpy(desc_, desc, sizeof(desc_)-1);
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desc_[sizeof(desc_)-1] = '\0';
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}
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int32_t id() const {return id_;}
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int64_t value() const {return value_;}
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const char* desc() const {return desc_;}
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void id(int32_t x) {id_ = x;}
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void value(int64_t v) {value_ = v;}
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void desc(const char* s)
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{
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std::strncpy(desc_, s, sizeof(desc_)-1);
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desc_[sizeof(desc_-1)] = '\0';
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}
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friend void endian_reverse_inplace(UDT&);
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private:
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int32_t id_;
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int64_t value_;
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char desc_[56]; // '/0'
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};
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void endian_reverse_inplace(UDT& x)
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{
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boost::endian::endian_reverse_inplace(x.id_);
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boost::endian::endian_reverse_inplace(x.value_);
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}
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}
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int main(int, char* [])
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{
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user::UDT x(1, 123456789012345LL, "Bingo!");
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//cout << std::hex;
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cout << "(1) " << x.id() << ' ' << x.value() << ' ' << x.desc() << endl;
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user::endian_reverse_inplace(x);
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cout << "(2) " << x.id() << ' ' << x.value() << ' ' << x.desc() << endl;
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endian_reverse_inplace(x);
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cout << "(3) " << x.id() << ' ' << x.value() << ' ' << x.desc() << endl;
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conditional_reverse_inplace<order::little, order::big>(x);
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cout << "(4) " << x.id() << ' ' << x.value() << ' ' << x.desc() << endl;
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conditional_reverse_inplace(x, order::big, order::little);
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cout << "(5) " << x.id() << ' ' << x.value() << ' ' << x.desc() << endl;
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}
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#include <boost/endian/detail/disable_warnings_pop.hpp>
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