mulmi

kyosu::mulmi = eve::functor<mulmi_t>

inlineconstexpr

Computes the value of the parameter multiplied by i on the left side. For real, complex and quaternion the computation is an optimization over the call to * operator.

Header file

#include <kyosu/functions.hpp>

Callable Signatures

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

Parameters

• z: Value to process.

Return value

• Returns -i(as(z))*z. If z is floating point a complex is returned, in the other cases the returned value has the same type as the input.

Example

#include <kyosu/kyosu.hpp>
#include <eve/wide.hpp>
#include <iostream>
 
int main()
{
 
 using wide_ft = eve::wide <float, eve::fixed<4>>;
  wide_ft r = { 3.0f, 2.0f, 1.0f, 0.5f};
  wide_ft i = { 2.0f , -1.0,  -5.0, 0.0};
  auto zc = kyosu::complex_t<wide_ft>(r, i);
  auto zq = kyosu::quaternion(1.0f, 2.0f, 3.0f, 4.0f);
 
  std::cout
    << "---- simd" << std::endl
    << "<- r         = " << r << std::endl
    << "-> mulmi(r)  = " << kyosu::mulmi(r)<< std::endl
    << "<- zc        = " << zc << std::endl
    << "-> mulmi(zc) = " << kyosu::mulmi(zc)<< std::endl
    << "<- zq        = " << zq << std::endl
    << "-> mulmi(zq) = " << kyosu::mulmi(zq) << std::endl;
 
  return 0;
}