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Support any expanding loads in endian_load

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This commit is contained in:
Peter Dimov
2019-04-30 23:53:39 +03:00
parent fe18fdbb3b
commit 79c3add907
2 changed files with 457 additions and 1 deletions
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146
test/endian_load_test.cpp
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@ -3,7 +3,7 @@
// Distributed under the Boost Software License, Version 1.0.
// http://www.boost.org/LICENSE_1_0.txt
#include <boost/endian/detail/endian_load.hpp>
#include <boost/endian/conversion.hpp>
#include <boost/core/lightweight_test.hpp>
#include <boost/config.hpp>
#include <boost/cstdint.hpp>
@ -14,48 +14,120 @@ int main()
{
unsigned char v[] = { 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08 };
// 1 -> 1
BOOST_TEST_EQ( (boost::endian::endian_load<boost::int8_t, 1, boost::endian::order::little>( v )), 0x01 );
BOOST_TEST_EQ( (boost::endian::endian_load<boost::uint8_t, 1, boost::endian::order::little>( v )), 0x01 );
BOOST_TEST_EQ( (boost::endian::endian_load<boost::int8_t, 1, boost::endian::order::big>( v )), 0x01 );
BOOST_TEST_EQ( (boost::endian::endian_load<boost::uint8_t, 1, boost::endian::order::big>( v )), 0x01 );
// 1 -> 2
BOOST_TEST_EQ( (boost::endian::endian_load<boost::int16_t, 1, boost::endian::order::little>( v )), 0x01 );
BOOST_TEST_EQ( (boost::endian::endian_load<boost::uint16_t, 1, boost::endian::order::little>( v )), 0x01 );
BOOST_TEST_EQ( (boost::endian::endian_load<boost::int16_t, 1, boost::endian::order::big>( v )), 0x01 );
BOOST_TEST_EQ( (boost::endian::endian_load<boost::uint16_t, 1, boost::endian::order::big>( v )), 0x01 );
// 2 -> 2
BOOST_TEST_EQ( (boost::endian::endian_load<boost::int16_t, 2, boost::endian::order::little>( v )), 0x0201 );
BOOST_TEST_EQ( (boost::endian::endian_load<boost::uint16_t, 2, boost::endian::order::little>( v )), 0x0201 );
BOOST_TEST_EQ( (boost::endian::endian_load<boost::int16_t, 2, boost::endian::order::big>( v )), 0x0102 );
BOOST_TEST_EQ( (boost::endian::endian_load<boost::uint16_t, 2, boost::endian::order::big>( v )), 0x0102 );
// 1 -> 4
BOOST_TEST_EQ( (boost::endian::endian_load<boost::int32_t, 1, boost::endian::order::little>( v )), 0x01 );
BOOST_TEST_EQ( (boost::endian::endian_load<boost::uint32_t, 1, boost::endian::order::little>( v )), 0x01 );
BOOST_TEST_EQ( (boost::endian::endian_load<boost::int32_t, 1, boost::endian::order::big>( v )), 0x01 );
BOOST_TEST_EQ( (boost::endian::endian_load<boost::uint32_t, 1, boost::endian::order::big>( v )), 0x01 );
// 2 -> 4
BOOST_TEST_EQ( (boost::endian::endian_load<boost::int32_t, 2, boost::endian::order::little>( v )), 0x0201 );
BOOST_TEST_EQ( (boost::endian::endian_load<boost::uint32_t, 2, boost::endian::order::little>( v )), 0x0201 );
BOOST_TEST_EQ( (boost::endian::endian_load<boost::int32_t, 2, boost::endian::order::big>( v )), 0x0102 );
BOOST_TEST_EQ( (boost::endian::endian_load<boost::uint32_t, 2, boost::endian::order::big>( v )), 0x0102 );
// 3 -> 4
BOOST_TEST_EQ( (boost::endian::endian_load<boost::int32_t, 3, boost::endian::order::little>( v )), 0x030201 );
BOOST_TEST_EQ( (boost::endian::endian_load<boost::uint32_t, 3, boost::endian::order::little>( v )), 0x030201 );
BOOST_TEST_EQ( (boost::endian::endian_load<boost::int32_t, 3, boost::endian::order::big>( v )), 0x010203 );
BOOST_TEST_EQ( (boost::endian::endian_load<boost::uint32_t, 3, boost::endian::order::big>( v )), 0x010203 );
// 4 -> 4
BOOST_TEST_EQ( (boost::endian::endian_load<boost::int32_t, 4, boost::endian::order::little>( v )), 0x04030201 );
BOOST_TEST_EQ( (boost::endian::endian_load<boost::uint32_t, 4, boost::endian::order::little>( v )), 0x04030201 );
BOOST_TEST_EQ( (boost::endian::endian_load<boost::int32_t, 4, boost::endian::order::big>( v )), 0x01020304 );
BOOST_TEST_EQ( (boost::endian::endian_load<boost::uint32_t, 4, boost::endian::order::big>( v )), 0x01020304 );
// 1 -> 8
BOOST_TEST_EQ( (boost::endian::endian_load<boost::int64_t, 1, boost::endian::order::little>( v )), 0x01 );
BOOST_TEST_EQ( (boost::endian::endian_load<boost::uint64_t, 1, boost::endian::order::little>( v )), 0x01 );
BOOST_TEST_EQ( (boost::endian::endian_load<boost::int64_t, 1, boost::endian::order::big>( v )), 0x01 );
BOOST_TEST_EQ( (boost::endian::endian_load<boost::uint64_t, 1, boost::endian::order::big>( v )), 0x01 );
// 2 -> 8
BOOST_TEST_EQ( (boost::endian::endian_load<boost::int64_t, 2, boost::endian::order::little>( v )), 0x0201 );
BOOST_TEST_EQ( (boost::endian::endian_load<boost::uint64_t, 2, boost::endian::order::little>( v )), 0x0201 );
BOOST_TEST_EQ( (boost::endian::endian_load<boost::int64_t, 2, boost::endian::order::big>( v )), 0x0102 );
BOOST_TEST_EQ( (boost::endian::endian_load<boost::uint64_t, 2, boost::endian::order::big>( v )), 0x0102 );
// 3 -> 8
BOOST_TEST_EQ( (boost::endian::endian_load<boost::int64_t, 3, boost::endian::order::little>( v )), 0x030201 );
BOOST_TEST_EQ( (boost::endian::endian_load<boost::uint64_t, 3, boost::endian::order::little>( v )), 0x030201 );
BOOST_TEST_EQ( (boost::endian::endian_load<boost::int64_t, 3, boost::endian::order::big>( v )), 0x010203 );
BOOST_TEST_EQ( (boost::endian::endian_load<boost::uint64_t, 3, boost::endian::order::big>( v )), 0x010203 );
// 4 -> 8
BOOST_TEST_EQ( (boost::endian::endian_load<boost::int64_t, 4, boost::endian::order::little>( v )), 0x04030201 );
BOOST_TEST_EQ( (boost::endian::endian_load<boost::uint64_t, 4, boost::endian::order::little>( v )), 0x04030201 );
BOOST_TEST_EQ( (boost::endian::endian_load<boost::int64_t, 4, boost::endian::order::big>( v )), 0x01020304 );
BOOST_TEST_EQ( (boost::endian::endian_load<boost::uint64_t, 4, boost::endian::order::big>( v )), 0x01020304 );
// 5 -> 8
BOOST_TEST_EQ( (boost::endian::endian_load<boost::int64_t, 5, boost::endian::order::little>( v )), 0x0504030201 );
BOOST_TEST_EQ( (boost::endian::endian_load<boost::uint64_t, 5, boost::endian::order::little>( v )), 0x0504030201 );
BOOST_TEST_EQ( (boost::endian::endian_load<boost::int64_t, 5, boost::endian::order::big>( v )), 0x0102030405 );
BOOST_TEST_EQ( (boost::endian::endian_load<boost::uint64_t, 5, boost::endian::order::big>( v )), 0x0102030405 );
// 6 -> 8
BOOST_TEST_EQ( (boost::endian::endian_load<boost::int64_t, 6, boost::endian::order::little>( v )), 0x060504030201 );
BOOST_TEST_EQ( (boost::endian::endian_load<boost::uint64_t, 6, boost::endian::order::little>( v )), 0x060504030201 );
BOOST_TEST_EQ( (boost::endian::endian_load<boost::int64_t, 6, boost::endian::order::big>( v )), 0x010203040506 );
BOOST_TEST_EQ( (boost::endian::endian_load<boost::uint64_t, 6, boost::endian::order::big>( v )), 0x010203040506 );
// 7 -> 8
BOOST_TEST_EQ( (boost::endian::endian_load<boost::int64_t, 7, boost::endian::order::little>( v )), 0x07060504030201 );
BOOST_TEST_EQ( (boost::endian::endian_load<boost::uint64_t, 7, boost::endian::order::little>( v )), 0x07060504030201 );
BOOST_TEST_EQ( (boost::endian::endian_load<boost::int64_t, 7, boost::endian::order::big>( v )), 0x01020304050607 );
BOOST_TEST_EQ( (boost::endian::endian_load<boost::uint64_t, 7, boost::endian::order::big>( v )), 0x01020304050607 );
// 8 -> 8
BOOST_TEST_EQ( (boost::endian::endian_load<boost::int64_t, 8, boost::endian::order::little>( v )), 0x0807060504030201 );
BOOST_TEST_EQ( (boost::endian::endian_load<boost::uint64_t, 8, boost::endian::order::little>( v )), 0x0807060504030201 );
@ -66,48 +138,120 @@ int main()
{
unsigned char v[] = { 0xF1, 0xF2, 0xF3, 0xF4, 0xF5, 0xF6, 0xF7, 0xF8 };
// 1 -> 1
BOOST_TEST_EQ( (boost::endian::endian_load<boost::int8_t, 1, boost::endian::order::little>( v )), -15 );
BOOST_TEST_EQ( (boost::endian::endian_load<boost::uint8_t, 1, boost::endian::order::little>( v )), 0xF1 );
BOOST_TEST_EQ( (boost::endian::endian_load<boost::int8_t, 1, boost::endian::order::big>( v )), -15 );
BOOST_TEST_EQ( (boost::endian::endian_load<boost::uint8_t, 1, boost::endian::order::big>( v )), 0xF1 );
// 1 -> 2
BOOST_TEST_EQ( (boost::endian::endian_load<boost::int16_t, 1, boost::endian::order::little>( v )), -15 );
BOOST_TEST_EQ( (boost::endian::endian_load<boost::uint16_t, 1, boost::endian::order::little>( v )), 0xF1 );
BOOST_TEST_EQ( (boost::endian::endian_load<boost::int16_t, 1, boost::endian::order::big>( v )), -15 );
BOOST_TEST_EQ( (boost::endian::endian_load<boost::uint16_t, 1, boost::endian::order::big>( v )), 0xF1 );
// 2 -> 2
BOOST_TEST_EQ( (boost::endian::endian_load<boost::int16_t, 2, boost::endian::order::little>( v )), -3343 );
BOOST_TEST_EQ( (boost::endian::endian_load<boost::uint16_t, 2, boost::endian::order::little>( v )), 0xF2F1 );
BOOST_TEST_EQ( (boost::endian::endian_load<boost::int16_t, 2, boost::endian::order::big>( v )), -3598 );
BOOST_TEST_EQ( (boost::endian::endian_load<boost::uint16_t, 2, boost::endian::order::big>( v )), 0xF1F2 );
// 1 -> 4
BOOST_TEST_EQ( (boost::endian::endian_load<boost::int32_t, 1, boost::endian::order::little>( v )), -15 );
BOOST_TEST_EQ( (boost::endian::endian_load<boost::uint32_t, 1, boost::endian::order::little>( v )), 0xF1 );
BOOST_TEST_EQ( (boost::endian::endian_load<boost::int32_t, 1, boost::endian::order::big>( v )), -15 );
BOOST_TEST_EQ( (boost::endian::endian_load<boost::uint32_t, 1, boost::endian::order::big>( v )), 0xF1 );
// 2 -> 4
BOOST_TEST_EQ( (boost::endian::endian_load<boost::int32_t, 2, boost::endian::order::little>( v )), -3343 );
BOOST_TEST_EQ( (boost::endian::endian_load<boost::uint32_t, 2, boost::endian::order::little>( v )), 0xF2F1 );
BOOST_TEST_EQ( (boost::endian::endian_load<boost::int32_t, 2, boost::endian::order::big>( v )), -3598 );
BOOST_TEST_EQ( (boost::endian::endian_load<boost::uint32_t, 2, boost::endian::order::big>( v )), 0xF1F2 );
// 3 -> 4
BOOST_TEST_EQ( (boost::endian::endian_load<boost::int32_t, 3, boost::endian::order::little>( v )), -789775 );
BOOST_TEST_EQ( (boost::endian::endian_load<boost::uint32_t, 3, boost::endian::order::little>( v )), 0xF3F2F1 );
BOOST_TEST_EQ( (boost::endian::endian_load<boost::int32_t, 3, boost::endian::order::big>( v )), -920845 );
BOOST_TEST_EQ( (boost::endian::endian_load<boost::uint32_t, 3, boost::endian::order::big>( v )), 0xF1F2F3 );
// 4 -> 4
BOOST_TEST_EQ( (boost::endian::endian_load<boost::int32_t, 4, boost::endian::order::little>( v )), 0xF4F3F2F1 );
BOOST_TEST_EQ( (boost::endian::endian_load<boost::uint32_t, 4, boost::endian::order::little>( v )), 0xF4F3F2F1 );
BOOST_TEST_EQ( (boost::endian::endian_load<boost::int32_t, 4, boost::endian::order::big>( v )), 0xF1F2F3F4 );
BOOST_TEST_EQ( (boost::endian::endian_load<boost::uint32_t, 4, boost::endian::order::big>( v )), 0xF1F2F3F4 );
// 1 -> 8
BOOST_TEST_EQ( (boost::endian::endian_load<boost::int64_t, 1, boost::endian::order::little>( v )), -15 );
BOOST_TEST_EQ( (boost::endian::endian_load<boost::uint64_t, 1, boost::endian::order::little>( v )), 0xF1 );
BOOST_TEST_EQ( (boost::endian::endian_load<boost::int64_t, 1, boost::endian::order::big>( v )), -15 );
BOOST_TEST_EQ( (boost::endian::endian_load<boost::uint64_t, 1, boost::endian::order::big>( v )), 0xF1 );
// 2 -> 8
BOOST_TEST_EQ( (boost::endian::endian_load<boost::int64_t, 2, boost::endian::order::little>( v )), -3343 );
BOOST_TEST_EQ( (boost::endian::endian_load<boost::uint64_t, 2, boost::endian::order::little>( v )), 0xF2F1 );
BOOST_TEST_EQ( (boost::endian::endian_load<boost::int64_t, 2, boost::endian::order::big>( v )), -3598 );
BOOST_TEST_EQ( (boost::endian::endian_load<boost::uint64_t, 2, boost::endian::order::big>( v )), 0xF1F2 );
// 3 -> 8
BOOST_TEST_EQ( (boost::endian::endian_load<boost::int64_t, 3, boost::endian::order::little>( v )), -789775 );
BOOST_TEST_EQ( (boost::endian::endian_load<boost::uint64_t, 3, boost::endian::order::little>( v )), 0xF3F2F1 );
BOOST_TEST_EQ( (boost::endian::endian_load<boost::int64_t, 3, boost::endian::order::big>( v )), -920845 );
BOOST_TEST_EQ( (boost::endian::endian_load<boost::uint64_t, 3, boost::endian::order::big>( v )), 0xF1F2F3 );
// 4 -> 8
BOOST_TEST_EQ( (boost::endian::endian_load<boost::int64_t, 4, boost::endian::order::little>( v )), -185339151 );
BOOST_TEST_EQ( (boost::endian::endian_load<boost::uint64_t, 4, boost::endian::order::little>( v )), 0xF4F3F2F1 );
BOOST_TEST_EQ( (boost::endian::endian_load<boost::int64_t, 4, boost::endian::order::big>( v )), -235736076 );
BOOST_TEST_EQ( (boost::endian::endian_load<boost::uint64_t, 4, boost::endian::order::big>( v )), 0xF1F2F3F4 );
// 5 -> 8
BOOST_TEST_EQ( (boost::endian::endian_load<boost::int64_t, 5, boost::endian::order::little>( v )), -43135012111 );
BOOST_TEST_EQ( (boost::endian::endian_load<boost::uint64_t, 5, boost::endian::order::little>( v )), 0xF5F4F3F2F1 );
BOOST_TEST_EQ( (boost::endian::endian_load<boost::int64_t, 5, boost::endian::order::big>( v )), -60348435211 );
BOOST_TEST_EQ( (boost::endian::endian_load<boost::uint64_t, 5, boost::endian::order::big>( v )), 0xF1F2F3F4F5 );
// 6 -> 8
BOOST_TEST_EQ( (boost::endian::endian_load<boost::int64_t, 6, boost::endian::order::little>( v )), -9938739662095 );
BOOST_TEST_EQ( (boost::endian::endian_load<boost::uint64_t, 6, boost::endian::order::little>( v )), 0xF6F5F4F3F2F1 );
BOOST_TEST_EQ( (boost::endian::endian_load<boost::int64_t, 6, boost::endian::order::big>( v )), -15449199413770 );
BOOST_TEST_EQ( (boost::endian::endian_load<boost::uint64_t, 6, boost::endian::order::big>( v )), 0xF1F2F3F4F5F6 );
// 7 -> 8
BOOST_TEST_EQ( (boost::endian::endian_load<boost::int64_t, 7, boost::endian::order::little>( v )), -2261738553347343 );
BOOST_TEST_EQ( (boost::endian::endian_load<boost::uint64_t, 7, boost::endian::order::little>( v )), 0xF7F6F5F4F3F2F1 );
BOOST_TEST_EQ( (boost::endian::endian_load<boost::int64_t, 7, boost::endian::order::big>( v )), -3954995049924873 );
BOOST_TEST_EQ( (boost::endian::endian_load<boost::uint64_t, 7, boost::endian::order::big>( v )), 0xF1F2F3F4F5F6F7 );
// 8 -> 8
BOOST_TEST_EQ( (boost::endian::endian_load<boost::int64_t, 8, boost::endian::order::little>( v )), 0xF8F7F6F5F4F3F2F1 );
BOOST_TEST_EQ( (boost::endian::endian_load<boost::uint64_t, 8, boost::endian::order::little>( v )), 0xF8F7F6F5F4F3F2F1 );