E.V.E  0.1-beta

◆ is_even

eve::is_even = {}
inlineconstexpr

Callable object computing the is_even logical value.

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

Members Functions

Member Effect
operator() the computation of the is_even logical value
operator[] Construct a conditional version of current function object

auto operator()(real_value auto x ) const noexcept;
Definition: value.hpp:93

Parameters

x: value.

Return value

The call:

constexpr callable_is_even_ is_even
Callable object computing the is_even logical value.
Definition: is_even.hpp:84
Wrapper for SIMD compatible logical types.
Definition: logical.hpp:36

is semantically equivalent to:

if constexpr(floating_real_value<T>) r = is_flint(x) && is_flint(x/2);
else constexpr(integral_real_value<T>) r = is_equal(x, (x/2)*2);
Definition: value.hpp:103
Definition: value.hpp:113
constexpr callable_is_equal_ is_equal
Callable object computing the equality predicate.
Definition: is_equal.hpp:98
constexpr callable_is_flint_ is_flint
Callable object computing the is_flint logical value.
Definition: is_flint.hpp:87

auto operator[]( conditional_expression auto cond ) const noexcept;

Higher-order function generating a masked version of eve::is_even

Parameters

cond : conditional expression

Return value

A Callable object so that the expression is_even[cond](x) is equivalent to if_else(cond,is_even(x),false(as(is_even(x))))


Supported decorators

no decorators are supported

Example

See it live on Compiler Explorer

#include <eve/function/is_even.hpp>
#include <eve/wide.hpp>
#include <iostream>
int main()
{
wide_ft pf = {0.0f, 1.0f, -1.5f, -2.0f};
std::cout << "---- simd" << '\n'
<< "<- pf = " << pf << '\n'
<< "-> is_even(pf) = " << eve::is_even(pf) << '\n';
float xf = 1.0f;
std::cout << "---- scalar" << '\n'
<< "<- xf = " << xf << '\n'
<< "-> is_even(xf) = " << eve::is_even(xf) << '\n';
return 0;
}
Wrapper for SIMD registers.
Definition: wide.hpp:65