byte_reverse

auto eve::byte_reverse = functor<byte_reverse_t>

inlineconstexpr

Header file

#include <eve/module/core.hpp>

Callable Signatures

namespace eve
{
   // Regular overload
   constexpr auto byte_reverse(unsigned_value auto x)                          noexcept; // 1
 
   // Lanes masking
   constexpr auto byte_reverse[conditional_expr auto c](unsigned_value auto x) noexcept; // 2
   constexpr auto byte_reverse[logical_value auto m](unsigned_value auto x)    noexcept; // 2
}

Parameters

• x: argument.
• c: Conditional expression masking the operation.
• m: Logical value masking the operation.

Return value

1. The values of the parameter elements are returned with bytes in reversed order.
2. The operation is performed conditionnaly.

Note

eve::byte_reverse is the functional equivalent to std::byte_swap. However, we decided to name it byte_reverse in order to keep a proper naming scheme aligned with the eve::bit_swap/evebit_reverse functions.

Example

// revision 1
#include <eve/module/core.hpp>
#include <iostream>
 
int main()
{
  eve::wide wu0{0u, 1u, 2u, 3u, 4u, 5u, 6u, 7u};
 
  std::cout << "<- wu0                               = " << wu0 << "\n";
                                                     
  std::cout << "-> byte_reverse(wu0)                 = " << eve::byte_reverse(wu0) << "\n";
  std::cout << "-> byte_reverse[ignore_last(2)](wu0) = " << eve::byte_reverse[eve::ignore_last(2)](wu0) << "\n";
  std::cout << "-> byte_reverse[wu0 != 2u](wu0)      = " << eve::byte_reverse[wu0 != 2u](wu0) << "\n";
}