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- // Copyright 2019 Peter Dimov
- //
- // Distributed under the Boost Software License, Version 1.0.
- // http://www.boost.org/LICENSE_1_0.txt
- #include <boost/endian/conversion.hpp>
- #include <boost/core/lightweight_test.hpp>
- #include <boost/config.hpp>
- #include <boost/cstdint.hpp>
- #include <cstddef>
- #include <ostream>
- #include <iomanip>
- class byte_span
- {
- private:
- unsigned char const * p_;
- std::size_t n_;
- public:
- byte_span( unsigned char const * p, std::size_t n ): p_( p ), n_( n )
- {
- }
- template<std::size_t N> explicit byte_span( unsigned char const (&a)[ N ] ): p_( a ), n_( N )
- {
- }
- bool operator==( byte_span const& r ) const
- {
- if( n_ != r.n_ ) return false;
- for( std::size_t i = 0; i < n_; ++i )
- {
- if( p_[ i ] != r.p_[ i ] ) return false;
- }
- return true;
- }
- friend std::ostream& operator<<( std::ostream& os, byte_span s )
- {
- if( s.n_ == 0 ) return os;
- os << std::hex << std::setfill( '0' ) << std::uppercase;
- os << std::setw( 2 ) << +s.p_[ 0 ];
- for( std::size_t i = 1; i < s.n_; ++i )
- {
- os << ':' << std::setw( 2 ) << +s.p_[ i ];
- }
- os << std::dec << std::setfill( ' ' ) << std::nouppercase;;
- return os;
- }
- };
- int main()
- {
- using namespace boost::endian;
- // 16
- {
- unsigned char v[] = { 0xAA, 0xAA, 0xAA };
- store_little_s16( v, -3343 );
- unsigned char w1[] = { 0xF1, 0xF2, 0xAA };
- BOOST_TEST_EQ( byte_span( v ), byte_span( w1 ) );
- store_little_u16( v, 0x0201 );
- unsigned char w2[] = { 0x01, 0x02, 0xAA };
- BOOST_TEST_EQ( byte_span( v ), byte_span( w2 ) );
- store_big_s16( v, -3343 );
- unsigned char w3[] = { 0xF2, 0xF1, 0xAA };
- BOOST_TEST_EQ( byte_span( v ), byte_span( w3 ) );
- store_big_u16( v, 0x0201 );
- unsigned char w4[] = { 0x02, 0x01, 0xAA };
- BOOST_TEST_EQ( byte_span( v ), byte_span( w4 ) );
- }
- // 24
- {
- unsigned char v[] = { 0xAA, 0xAA, 0xAA, 0xAA };
- store_little_s24( v, -789775 );
- unsigned char w1[] = { 0xF1, 0xF2, 0xF3, 0xAA };
- BOOST_TEST_EQ( byte_span( v ), byte_span( w1 ) );
- store_little_u24( v, 0x030201 );
- unsigned char w2[] = { 0x01, 0x02, 0x03, 0xAA };
- BOOST_TEST_EQ( byte_span( v ), byte_span( w2 ) );
- store_big_s24( v, -789775 );
- unsigned char w3[] = { 0xF3, 0xF2, 0xF1, 0xAA };
- BOOST_TEST_EQ( byte_span( v ), byte_span( w3 ) );
- store_big_u24( v, 0x030201 );
- unsigned char w4[] = { 0x03, 0x02, 0x01, 0xAA };
- BOOST_TEST_EQ( byte_span( v ), byte_span( w4 ) );
- }
- // 32
- {
- unsigned char v[] = { 0xAA, 0xAA, 0xAA, 0xAA, 0xAA };
- store_little_s32( v, 0xF4F3F2F1 );
- unsigned char w1[] = { 0xF1, 0xF2, 0xF3, 0xF4, 0xAA };
- BOOST_TEST_EQ( byte_span( v ), byte_span( w1 ) );
- store_little_u32( v, 0x04030201 );
- unsigned char w2[] = { 0x01, 0x02, 0x03, 0x04, 0xAA };
- BOOST_TEST_EQ( byte_span( v ), byte_span( w2 ) );
- store_big_s32( v, 0xF4F3F2F1 );
- unsigned char w3[] = { 0xF4, 0xF3, 0xF2, 0xF1, 0xAA };
- BOOST_TEST_EQ( byte_span( v ), byte_span( w3 ) );
- store_big_u32( v, 0x04030201 );
- unsigned char w4[] = { 0x04, 0x03, 0x02, 0x01, 0xAA };
- BOOST_TEST_EQ( byte_span( v ), byte_span( w4 ) );
- }
- // 40
- {
- unsigned char v[] = { 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA };
- store_little_s40( v, -43135012111 );
- unsigned char w1[] = { 0xF1, 0xF2, 0xF3, 0xF4, 0xF5, 0xAA };
- BOOST_TEST_EQ( byte_span( v ), byte_span( w1 ) );
- store_little_u40( v, 0x0504030201 );
- unsigned char w2[] = { 0x01, 0x02, 0x03, 0x04, 0x05, 0xAA };
- BOOST_TEST_EQ( byte_span( v ), byte_span( w2 ) );
- store_big_s40( v, -43135012111 );
- unsigned char w3[] = { 0xF5, 0xF4, 0xF3, 0xF2, 0xF1, 0xAA };
- BOOST_TEST_EQ( byte_span( v ), byte_span( w3 ) );
- store_big_u40( v, 0x0504030201 );
- unsigned char w4[] = { 0x05, 0x04, 0x03, 0x02, 0x01, 0xAA };
- BOOST_TEST_EQ( byte_span( v ), byte_span( w4 ) );
- }
- // 48
- {
- unsigned char v[] = { 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA };
- store_little_s48( v, -9938739662095 );
- unsigned char w1[] = { 0xF1, 0xF2, 0xF3, 0xF4, 0xF5, 0xF6, 0xAA };
- BOOST_TEST_EQ( byte_span( v ), byte_span( w1 ) );
- store_little_u48( v, 0x060504030201 );
- unsigned char w2[] = { 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0xAA };
- BOOST_TEST_EQ( byte_span( v ), byte_span( w2 ) );
- store_big_s48( v, -9938739662095 );
- unsigned char w3[] = { 0xF6, 0xF5, 0xF4, 0xF3, 0xF2, 0xF1, 0xAA };
- BOOST_TEST_EQ( byte_span( v ), byte_span( w3 ) );
- store_big_u48( v, 0x060504030201 );
- unsigned char w4[] = { 0x06, 0x05, 0x04, 0x03, 0x02, 0x01, 0xAA };
- BOOST_TEST_EQ( byte_span( v ), byte_span( w4 ) );
- }
- // 56
- {
- unsigned char v[] = { 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA };
- store_little_s56( v, -2261738553347343 );
- unsigned char w1[] = { 0xF1, 0xF2, 0xF3, 0xF4, 0xF5, 0xF6, 0xF7, 0xAA };
- BOOST_TEST_EQ( byte_span( v ), byte_span( w1 ) );
- store_little_u56( v, 0x07060504030201 );
- unsigned char w2[] = { 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0xAA };
- BOOST_TEST_EQ( byte_span( v ), byte_span( w2 ) );
- store_big_s56( v, -2261738553347343 );
- unsigned char w3[] = { 0xF7, 0xF6, 0xF5, 0xF4, 0xF3, 0xF2, 0xF1, 0xAA };
- BOOST_TEST_EQ( byte_span( v ), byte_span( w3 ) );
- store_big_u56( v, 0x07060504030201 );
- unsigned char w4[] = { 0x07, 0x06, 0x05, 0x04, 0x03, 0x02, 0x01, 0xAA };
- BOOST_TEST_EQ( byte_span( v ), byte_span( w4 ) );
- }
- // 64
- {
- unsigned char v[] = { 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA };
- store_little_s64( v, 0xF8F7F6F5F4F3F2F1 );
- unsigned char w1[] = { 0xF1, 0xF2, 0xF3, 0xF4, 0xF5, 0xF6, 0xF7, 0xF8, 0xAA };
- BOOST_TEST_EQ( byte_span( v ), byte_span( w1 ) );
- store_little_u64( v, 0x0807060504030201 );
- unsigned char w2[] = { 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0xAA };
- BOOST_TEST_EQ( byte_span( v ), byte_span( w2 ) );
- store_big_s64( v, 0xF8F7F6F5F4F3F2F1 );
- unsigned char w3[] = { 0xF8, 0xF7, 0xF6, 0xF5, 0xF4, 0xF3, 0xF2, 0xF1, 0xAA };
- BOOST_TEST_EQ( byte_span( v ), byte_span( w3 ) );
- store_big_u64( v, 0x0807060504030201 );
- unsigned char w4[] = { 0x08, 0x07, 0x06, 0x05, 0x04, 0x03, 0x02, 0x01, 0xAA };
- BOOST_TEST_EQ( byte_span( v ), byte_span( w4 ) );
- }
- return boost::report_errors();
- }
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