bit_cast

auto eve::bit_cast = functor<bit_cast_t>

inlineconstexpr

Header file

#include <eve/module/core.hpp>

Callable Signatures

namespace eve
{
   constexpr auto bit_cast operator()(value x, as<scalar_value> t) noexcept;
}

Parameters

• x : argument.
• t : Type wrapper instance embedding the type of the result.

Template parameters

• To: scalar type to which each element of x is casted

Return value

The bits of x of type From reinterpreted as being those of a variable of type To is returned.

Every bit in the value representation of the returned To object is equal to the corresponding bit in the object representation of from. The values of padding bits in the returned To object are unspecified.

If there is no value of type To corresponding to the value representation produced, the behavior is undefined. If there are multiple such values, which value is produced is unspecified.

External reference

• C++ standard reference

Example

// revision 2
#include <eve/module/core.hpp>
#include <iostream>
 
int main()
{
  eve::wide wf0{0.0f, 1.0f, 2.0f, 3.0f, -1.0f, -2.0f, -3.0f, -4.0f};
  eve::wide wi0{0, 1, 2, 3, -1, -2, -3, -4};
  eve::wide wu0{0u, 1u, 2u, 3u, 4u, 5u, 6u, 7u};
 
  std::cout << "<- wf0                   = " << wf0 << "\n";
  std::cout << "<- wi0                   = " << wi0 << "\n";
  std::cout << "<- wu0                   = " << wu0 << "\n";
 
  std::cout << "-> bit_cast(wf0, as(wu)) = " << eve::bit_cast(wf0, eve::as(wu0)) << "\n";
  std::cout << "-> bit_cast(wf0, as(wu0))= " << eve::bit_cast(wf0, eve::as(wu0)) << "\n";
  std::cout << "-> bit_cast(wi0, as(wu0))= " << eve::bit_cast(wi0, eve::as(wu0)) << "\n";
  std::cout << "-> bit_cast(wu0, as(wi0))= " << eve::bit_cast(wu0, eve::as(wi0)) << "\n";
  std::cout << "-> bit_cast(wi0, as(wu0))= " << eve::bit_cast(wi0, eve::as(wu0)) << "\n";
  std::cout << "-> bit_cast(wu, as(wi0)) = " << eve::bit_cast(wu0, eve::as(wi0)) << "\n";
}