| |
|
|
| |
CppLang, DataStructs, Concurrency, Floats, Fractions, Integrals, JavaJVM, Network, String
|
|
|
'pointer_cast()' and 'bit_cast()' and have all byte-order conversion and get/set functions be of constexpr; Add generalized template [get|put]_value(..) and to_hex_string(..)
Cleanup
- Split basic_types.hpp -> basic_types.hpp + byte_util.hpp + int_types.hpp + string_util.hpp
- Moved nsize_t, snsize_t to int_types.hpp and
using 'uint_fast32_t' and 'int_fast32_t' as natural types.
- Renamed cpp_lang_macros.hpp -> cpp_lang_util.hpp
+++
Add constexpr 'enum class endian', 'pointer_cast()' and 'bit_cast()'
and have all byte-order conversion and get/set functions be of constexpr.
- Exposing '__builtin_bit_cast(Dest_type, arg)' via
'constexpr bool is_builtin_bit_cast_available()' and type traits.
- Adding constexpr bit_cast<>() template for C++17 (a C++20 std),
allowing constexpr type conversion using '__builtin_bit_cast(Dest_type, arg)',
if the latter is available.
- Adding constexpr pointer_cast<>() template,
allowing constexpr pointer type conversion.
Either using '__builtin_bit_cast(Dest_type, arg)' or reinterpret_cast<>().
- Add constexpr 'enum class endian' API,
providing compile-time C++ endian evaluation w/o predefined macros.
Inspired by C++20.
- Replace linux bswap_[16,32,64] with either __builtin_bswap[16,32,64] or own const definition,
both allowing constexpr
- Add unified overloaded 'constexpr bswap(uint[16,32,64,128,192,256]_t const &)'
using constexpr endian API.
- Have all [get|put]_<type>(..) operations be of constexpr,
using pointer_cast<>() instead of plain reinterpret_cast<>()
and the new 'constexpr bswap(..)' methods.
+++
Add generalized template [get|put]_value(..) and to_hex_string(..)
- Add generalized template 'constexpr T [get|put]_value(..) {}' for std::is_standard_layout_v<T>
- Add generalized template 'inline to_hex_string(T const &) {}' for std::is_standard_layout_v<T>
+++
All of the above is covered by unit test 'test_basictypecon.cpp' '-std=c++17':
- gcc 8.3.0 on arm32, arm64: __builtin_bit_cast() not available
- gcc 10.2.1 on amd64: __builtin_bit_cast() not available
- clang 9.0.1 on amd64, arm64: __builtin_bit_cast() is available
- clang 11.0.1 on amd64: __builtin_bit_cast() is available
Full build time (user) incl unit tests (C++ and Java) on GCC
- amd64 gcc 11.0.1, 32 cores: 1m38s
- arm64 gcc 8.3.0, 4 cores: 13m30s
- arm32 gcc 8.3.0, 4 cores: 17m58s
|
