broadcast

auto eve::broadcast = functor<broadcast_t>

inlineconstexpr

Defined in Header

#include <eve/module/core.hpp>

Callable Signatures

namespace eve
{
  template<eve::scalar_value T> eve::as_wide_t<T> broadcast(T v) noexcept;                            // 1
  template<eve::scalar_value T, std::ptrdiff_t N> as_wide_t<T> broadcast(T v, fixed<N> sz) noexcept;  // 2
  template<eve::simd_value T, std::size_t I> T broadcast(T v, index_t<I> i) noexcept;                 // 3
  template<eve::simd_value T, std::size_t I, std::ptrdiff_t N>
  eve::as_wide_t<T,fixed<N>> broadcast(T v, index_t<I> i, fixed<N> sz) noexcept;                      // 4
}

Parameters

• v: A value.
• i: An eve::index instance indicating which lane of x to broadcast.
• sz: An eve::lane instance indicating how many lanes to broadcast to.

Return value

1. A SIMD value equals to eve::as_wide_t<T>{v}.
2. A SIMD value equals to eve::as_wide_t<T,eve::fixed<N>>{v}.
3. A SIMD value equals to T{v.get(I)}.
4. A SIMD value equals to eve::as_wide_t<T,eve::fixed<N>>{v.get(I)}.

Example

#include <eve/module/core.hpp>
#include <eve/wide.hpp>
#include <iostream>
 
using wide_ft = eve::wide<float, eve::fixed<4>>;
using wide_it = eve::wide<std::int16_t, eve::fixed<8>>;
 
int main()
{
  wide_ft pf = {1.2f,0.34f,0.056f,0.0078f};
  wide_it pi = {-1, 2,-3, 4,-5, 6,-7, 8};
 
  std::cout << eve::broadcast( 7.6 ) << "\n";
  std::cout << eve::broadcast(7.6, eve::lane<8> ) << "\n";
  std::cout << "\n";
 
  std::cout << pf << "\n"
            << eve::broadcast(pf, eve::index<3> ) << "\n";
 
  std::cout << "\n";
 
  std::cout << pi << "\n"
            << eve::broadcast(pi, eve::index<5>, eve::lane<4> ) << "\n";
}