E.V.E  0.1-beta

◆ count_true

eve::count_true = {}
inlineconstexpr

Callable object computing the count_true value.

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

Members Functions

Member Effect
operator() the computation of the count_true value

int operator()(value auto x) const noexcept;
Definition: value.hpp:31

Parameters

x: value.

Return value

an int value: the number of non zero elements in x.


Supported decorators

no decorators are supported

Example

See it live on Compiler Explorer

#include <eve/function/count_true.hpp>
#include <eve/wide.hpp>
#include <iostream>
int main()
{
std::cout << "---- scalar" << '\n'
<< "<- xf = " << xf << '\n'
<< "-> count_true(xf) = " << eve::count_true(xf) << '\n';
wide_ft pf = {true,false,true,false};
std::cout << "---- simd" << '\n'
<< "<- pf = " << pf << '\n'
<< "-> count_true(pf) = " << eve::count_true(pf) << '\n'
<< "-> count_true[ignore_first(2)](pf) = " << eve::count_true[eve::ignore_first(2)](pf) << '\n';
return 0;
}
constexpr callable_count_true_ count_true
Callable object computing the count_true value.
Definition: count_true.hpp:54
Wrapper for SIMD compatible logical types.
Definition: logical.hpp:36