pure

kyosu::pure = {}

inlineconstexpr

Extracts the imaginary part of a value.

Defined in Header

#include <kyosu/functions.hpp>

Callable Signatures

namespace kyosu
{
   template<kyosu::concepts::cayley_dickson T> constexpr auto  pure(T const& z)  noexcept;
   template<eve::floating_ordered_value T>     constexpr T     pure(T const& z)  noexcept;
}

Parameters

• z: Original value.

Return value

Returns the pure (also called imaginary) part of its argument. For real inputs, the call returns 0. It is an alias of imag.

Example

#include <kyosu/kyosu.hpp>
#include <eve/wide.hpp>
#include <iostream>
 
int main()
{
 
 using wide_ft = eve::wide <float, eve::fixed<4>>;
  wide_ft ref1 = { 3.0f, 2.0f, 1.0f, 0.5f};
  wide_ft imf1 = { 2.0f , -1.0,  -5.0, 0.0};
  wide_ft ref2 = { 0.0, 1.0, 2.0, 3.0};
  auto zc = kyosu::complex_t<wide_ft>(ref1, imf1);
 
  std::cout
    << "---- simd" << std::endl
    << "<- zc            = " << zc << std::endl
    << "-> imag(zc)      = " << kyosu::imag(zc)<< std::endl
    << "-> imag(ref2)    = " << kyosu::imag(ref2) << std::endl;
 
  return 0;
}