swap_if()

template<logical_value Mask, value Value>

eve::swap_if ( Mask const &  mask, Value &  lhs, Value &  rhs  )

noexcept

Required header: #include <eve/module/core.hpp>

Swaps the SIMD values lhs and rhs wherever mask evaluates to true.

Parameters

mask	Mask to apply over the swap operation.
lhs,rhs	Values to swap.

Example

#include <eve/module/core.hpp>
#include <eve/wide.hpp>
#include <iostream>
 
 
int main()
{
  eve::wide<float, eve::fixed<4>> a = {1.2f, 3.4f, 5.6f, 7.8f};
  eve::wide<float, eve::fixed<4>> b = {0.1f,1e-2f,1e-3f,1e-4f};
 
  std::cout << "Before swap_if(a < 4.f,a,b)\n"
            << "<- a                    = " << a << '\n'
            << "<- b                    = " << b << '\n'
            << "<- a < 4.f              = " << (a < 4.f) << "\n\n";
 
            eve::swap_if(a < 4.f,a,b);
 
  std::cout << "After swap_if(a < 4.f,a,b)\n"
            << "-> a                    = " << a << '\n'
            << "-> b                    = " << b << '\n';
 
  return 0;
}