1 // Copyright 2019 Peter Dimov
3 // Distributed under the Boost Software License, Version 1.0.
4 // http://www.boost.org/LICENSE_1_0.txt
6 #include <boost/endian/conversion.hpp>
7 #include <boost/core/lightweight_test.hpp>
8 #include <boost/config.hpp>
9 #include <boost/cstdint.hpp>
18 unsigned char const * p_;
23 byte_span( unsigned char const * p, std::size_t n ): p_( p ), n_( n )
27 template<std::size_t N> explicit byte_span( unsigned char const (&a)[ N ] ): p_( a ), n_( N )
31 bool operator==( byte_span const& r ) const
33 if( n_ != r.n_ ) return false;
35 for( std::size_t i = 0; i < n_; ++i )
37 if( p_[ i ] != r.p_[ i ] ) return false;
43 friend std::ostream& operator<<( std::ostream& os, byte_span s )
45 if( s.n_ == 0 ) return os;
47 os << std::hex << std::setfill( '0' ) << std::uppercase;
49 os << std::setw( 2 ) << +s.p_[ 0 ];
51 for( std::size_t i = 1; i < s.n_; ++i )
53 os << ':' << std::setw( 2 ) << +s.p_[ i ];
56 os << std::dec << std::setfill( ' ' ) << std::nouppercase;;
64 using namespace boost::endian;
69 unsigned char v[] = { 0xAA, 0xAA, 0xAA };
71 store_little_s16( v, -3343 );
73 unsigned char w1[] = { 0xF1, 0xF2, 0xAA };
75 BOOST_TEST_EQ( byte_span( v ), byte_span( w1 ) );
77 store_little_u16( v, 0x0201 );
79 unsigned char w2[] = { 0x01, 0x02, 0xAA };
81 BOOST_TEST_EQ( byte_span( v ), byte_span( w2 ) );
83 store_big_s16( v, -3343 );
85 unsigned char w3[] = { 0xF2, 0xF1, 0xAA };
87 BOOST_TEST_EQ( byte_span( v ), byte_span( w3 ) );
89 store_big_u16( v, 0x0201 );
91 unsigned char w4[] = { 0x02, 0x01, 0xAA };
93 BOOST_TEST_EQ( byte_span( v ), byte_span( w4 ) );
99 unsigned char v[] = { 0xAA, 0xAA, 0xAA, 0xAA };
101 store_little_s24( v, -789775 );
103 unsigned char w1[] = { 0xF1, 0xF2, 0xF3, 0xAA };
105 BOOST_TEST_EQ( byte_span( v ), byte_span( w1 ) );
107 store_little_u24( v, 0x030201 );
109 unsigned char w2[] = { 0x01, 0x02, 0x03, 0xAA };
111 BOOST_TEST_EQ( byte_span( v ), byte_span( w2 ) );
113 store_big_s24( v, -789775 );
115 unsigned char w3[] = { 0xF3, 0xF2, 0xF1, 0xAA };
117 BOOST_TEST_EQ( byte_span( v ), byte_span( w3 ) );
119 store_big_u24( v, 0x030201 );
121 unsigned char w4[] = { 0x03, 0x02, 0x01, 0xAA };
123 BOOST_TEST_EQ( byte_span( v ), byte_span( w4 ) );
129 unsigned char v[] = { 0xAA, 0xAA, 0xAA, 0xAA, 0xAA };
131 store_little_s32( v, 0xF4F3F2F1 );
133 unsigned char w1[] = { 0xF1, 0xF2, 0xF3, 0xF4, 0xAA };
135 BOOST_TEST_EQ( byte_span( v ), byte_span( w1 ) );
137 store_little_u32( v, 0x04030201 );
139 unsigned char w2[] = { 0x01, 0x02, 0x03, 0x04, 0xAA };
141 BOOST_TEST_EQ( byte_span( v ), byte_span( w2 ) );
143 store_big_s32( v, 0xF4F3F2F1 );
145 unsigned char w3[] = { 0xF4, 0xF3, 0xF2, 0xF1, 0xAA };
147 BOOST_TEST_EQ( byte_span( v ), byte_span( w3 ) );
149 store_big_u32( v, 0x04030201 );
151 unsigned char w4[] = { 0x04, 0x03, 0x02, 0x01, 0xAA };
153 BOOST_TEST_EQ( byte_span( v ), byte_span( w4 ) );
159 unsigned char v[] = { 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA };
161 store_little_s40( v, -43135012111 );
163 unsigned char w1[] = { 0xF1, 0xF2, 0xF3, 0xF4, 0xF5, 0xAA };
165 BOOST_TEST_EQ( byte_span( v ), byte_span( w1 ) );
167 store_little_u40( v, 0x0504030201 );
169 unsigned char w2[] = { 0x01, 0x02, 0x03, 0x04, 0x05, 0xAA };
171 BOOST_TEST_EQ( byte_span( v ), byte_span( w2 ) );
173 store_big_s40( v, -43135012111 );
175 unsigned char w3[] = { 0xF5, 0xF4, 0xF3, 0xF2, 0xF1, 0xAA };
177 BOOST_TEST_EQ( byte_span( v ), byte_span( w3 ) );
179 store_big_u40( v, 0x0504030201 );
181 unsigned char w4[] = { 0x05, 0x04, 0x03, 0x02, 0x01, 0xAA };
183 BOOST_TEST_EQ( byte_span( v ), byte_span( w4 ) );
189 unsigned char v[] = { 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA };
191 store_little_s48( v, -9938739662095 );
193 unsigned char w1[] = { 0xF1, 0xF2, 0xF3, 0xF4, 0xF5, 0xF6, 0xAA };
195 BOOST_TEST_EQ( byte_span( v ), byte_span( w1 ) );
197 store_little_u48( v, 0x060504030201 );
199 unsigned char w2[] = { 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0xAA };
201 BOOST_TEST_EQ( byte_span( v ), byte_span( w2 ) );
203 store_big_s48( v, -9938739662095 );
205 unsigned char w3[] = { 0xF6, 0xF5, 0xF4, 0xF3, 0xF2, 0xF1, 0xAA };
207 BOOST_TEST_EQ( byte_span( v ), byte_span( w3 ) );
209 store_big_u48( v, 0x060504030201 );
211 unsigned char w4[] = { 0x06, 0x05, 0x04, 0x03, 0x02, 0x01, 0xAA };
213 BOOST_TEST_EQ( byte_span( v ), byte_span( w4 ) );
219 unsigned char v[] = { 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA };
221 store_little_s56( v, -2261738553347343 );
223 unsigned char w1[] = { 0xF1, 0xF2, 0xF3, 0xF4, 0xF5, 0xF6, 0xF7, 0xAA };
225 BOOST_TEST_EQ( byte_span( v ), byte_span( w1 ) );
227 store_little_u56( v, 0x07060504030201 );
229 unsigned char w2[] = { 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0xAA };
231 BOOST_TEST_EQ( byte_span( v ), byte_span( w2 ) );
233 store_big_s56( v, -2261738553347343 );
235 unsigned char w3[] = { 0xF7, 0xF6, 0xF5, 0xF4, 0xF3, 0xF2, 0xF1, 0xAA };
237 BOOST_TEST_EQ( byte_span( v ), byte_span( w3 ) );
239 store_big_u56( v, 0x07060504030201 );
241 unsigned char w4[] = { 0x07, 0x06, 0x05, 0x04, 0x03, 0x02, 0x01, 0xAA };
243 BOOST_TEST_EQ( byte_span( v ), byte_span( w4 ) );
249 unsigned char v[] = { 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA };
251 store_little_s64( v, 0xF8F7F6F5F4F3F2F1 );
253 unsigned char w1[] = { 0xF1, 0xF2, 0xF3, 0xF4, 0xF5, 0xF6, 0xF7, 0xF8, 0xAA };
255 BOOST_TEST_EQ( byte_span( v ), byte_span( w1 ) );
257 store_little_u64( v, 0x0807060504030201 );
259 unsigned char w2[] = { 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0xAA };
261 BOOST_TEST_EQ( byte_span( v ), byte_span( w2 ) );
263 store_big_s64( v, 0xF8F7F6F5F4F3F2F1 );
265 unsigned char w3[] = { 0xF8, 0xF7, 0xF6, 0xF5, 0xF4, 0xF3, 0xF2, 0xF1, 0xAA };
267 BOOST_TEST_EQ( byte_span( v ), byte_span( w3 ) );
269 store_big_u64( v, 0x0807060504030201 );
271 unsigned char w4[] = { 0x08, 0x07, 0x06, 0x05, 0x04, 0x03, 0x02, 0x01, 0xAA };
273 BOOST_TEST_EQ( byte_span( v ), byte_span( w4 ) );
276 return boost::report_errors();