is_nepz

auto eve::is_nepz = functor<is_nepz_t>

inlineconstexpr

Header file

#include <eve/module/core.hpp>

Callable Signatures

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

Parameters

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

Return value

1. is_nepz(x) is true if and only if all bits of the representation of x are zero.
2. The operation is performed conditionnaly.

Example

// revision 0
#include <eve/module/core.hpp>
#include <iostream>
 
int main()
{
  eve::wide wf0{0.0, 1.0, 2.0, 3.0, -1.0, -2.0, -3.0, -0.0};
  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 << "-> is_nepz(wf0)                 = " << eve::is_nepz(wf0) << "\n";
  std::cout << "-> is_nepz[ignore_last(2)](wf0) = " << eve::is_nepz[eve::ignore_last(2)](wf0) << "\n";
  std::cout << "-> is_nepz[wf0 != 0](wf0)       = " << eve::is_nepz[wf0 != 0](wf0) << "\n";
}