bit_andnot

auto eve::bit_andnot = functor<bit_andnot_t>

inlineconstexpr

Header file

#include <eve/module/core.hpp>

Callable Signatures

namespace eve
{
   // Regular overloads
   constexpr auto bit_andnot(value auto x, value auto ... xs)                          noexcept; // 1
   constexpr auto bit_andnot(kumi::non_empty_product_type auto const& tup)             noexcept; // 2
 
   // Lanes masking
   constexpr auto bit_andnot[conditional_expr auto c](/*any of the above overloads*/)  noexcept; // 3
   constexpr auto bit_andnot[logical_value auto m](/*any of the above overloads*/)     noexcept; // 3
}

Parameters

• x: first argument.
• xs...: other arguments.
• tup: non empty tuple of arguments.
• c: Conditional expression masking the operation.
• m: Logical value masking the operation.

Return value

1. The return value type is to the common bit_value of the parameters. Each parameter is converted to this type and then:
   • For two parameters it computes the bitwise ANDNOT of the two parameters
   • For more than two parameters the call is semantically equivalent to bit_andnot(a0, bit_and(xs...))
2. equivalent to the call on the elements of the tuple.
3. The operation is performed conditionnaly.

External references

• Wikipedia

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, -4.0};
  eve::wide wf1{0.0, -4.0, 1.0, -1.0, 2.0, -2.0, 3.0, -3.0};
  eve::wide wi0{0, 1, 2, 3, -1, -2, -3, -4};
  eve::wide wi1{0, -4, 1, -1, 2, -2, 3, -3};
  eve::wide wu0{0u, 1u, 2u, 3u, 4u, 5u, 6u, 7u};
  eve::wide wu1{7u, 6u, 5u, 4u, 3u, 2u, 1u, 0u};
 
  std::cout << "<- wf0                                  = " << wf0 << "\n";
  std::cout << "<- wf1                                  = " << wf1 << "\n";
  std::cout << "<- wi0                                  = " << wi0 << "\n";
  std::cout << "<- wi1                                  = " << wi1 << "\n";
  std::cout << "<- wu0                                  = " << wu0 << "\n";
  std::cout << "<- wu1                                  = " << wu1 << "\n";
                                                        
  std::cout << "-> bit_andnot(wf0, wf1)                 = " << eve::bit_andnot(wf0, wf1) << "\n";
  std::cout << "-> bit_andnot[ignore_last(2)](wf0, wf1) = " << eve::bit_andnot[eve::ignore_last(2)](wf0, wf1) << "\n";
  std::cout << "-> bit_andnot[wf0 != 0](wf0, wf1)       = " << eve::bit_andnot[wf0 != 0](wf0, wf1) << "\n";
  std::cout << "-> bit_andnot(wu0, wu1)                 = " << eve::bit_andnot(wu0, wu1) << "\n";
  std::cout << "-> bit_andnot(wi0, wi1)                 = " << eve::bit_andnot(wi0, wi1) << "\n";
}