| // 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(); |
| } |