E.V.E  0.1-beta

◆ signmask

eve::signmask = {}
inlineconstexpr

Callable object computing the sign mask value.

Required header: #include <eve/function/signmask.hpp>

Member Effect
operator() Computes the signmask constant

tempate < value T > T operator()( as <T> const & t) const noexcept;
Lightweight type-wrapper.
Definition: as.hpp:29

Parameters

t: Type wrapper instance embedding the type of the constant.

Return value

the call eve::signmask(as<T>()) is a value of type T for which each element has all its bits unset except the highest.


Example

See it live on Compiler Explorer

#include <eve/constant/signmask.hpp>
#include <eve/wide.hpp>
#include <iostream>
using wide_ft = eve::wide<float>;
using wide_it = eve::wide<std::int16_t>;
int main()
{
wide_ft wxf;
wide_it wxi;
std::cout << "---- simd" << std::endl
<< "-> signmask(as<wide_ft>()) = " << eve::signmask(eve::as<wide_ft>()) << std::endl
<< "-> signmask(as<wide_it>()) = " << eve::signmask(eve::as<wide_it>()) << std::endl
<< "-> signmask(as(wxf)) = " << eve::signmask(eve::as(wxf)) << std::endl
<< "-> signmask(as(wxi)) = " << eve::signmask(eve::as(wxi)) << std::endl;
double xf;
std::int16_t xi;
std::cout << "---- scalar" << std::endl
<< "-> signmask(as<float>()) = " << eve::signmask(eve::as(float())) << std::endl
<< "-> signmask(as<std::int16_t>()) = " << eve::signmask(eve::as(std::int16_t())) << std::endl
<< "-> signmask(as<xf)) = " << eve::signmask(eve::as(xf)) << std::endl
<< "-> signmask(as<xi)) = " << eve::signmask(eve::as(xi)) << std::endl;
return 0;
}
constexpr callable_signmask_ signmask
Callable object computing the sign mask value.
Definition: signmask.hpp:55
Wrapper for SIMD registers.
Definition: wide.hpp:65