E.V.E  0.1-beta

◆ is_pow2

eve::is_pow2 = {}
inlineconstexpr

Callable object computing the is_pow2 predicate.

Required header: #include <eve/function/is_pow2.hpp>

Members Functions

Member Effect
operator() the is_pow2 predicate
operator[] Construct a conditional version of current function object

auto operator()( unsigned_real_value auto x ) const noexcept;

Parameters

x: unsigned value.

Return value

Checks elementwise if x is an integral power of two.


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

Higher-order function generating a masked version of eve::is_pow2

Parameters

cond : conditional expression

Return value

A Callable object so that the expression is_pow2[cond](x) is equivalent to if_else(cond,is_pow2(x),false(as(is_pow2(x))))


Supported decorators

no decorators are supported

Example

See it live on Compiler Explorer

#include <eve/function/is_pow2.hpp>
#include <eve/wide.hpp>
#include <iostream>
int main()
{
wide_it pi = {14, 1, 3, 0, 16, 23000, 0, 27};
std::cout << "---- simd" << '\n'
<< "<- pi = " << pi << '\n'
<< "-> is_pow2(pi) = " << eve::is_pow2(pi) << '\n';
std::uint32_t xf = 48;
std::cout << "---- scalar" << '\n'
<< "<- xf = " << xf << '\n'
<< "-> is_pow2(xf) = " << eve::is_pow2(xf) << '\n';
return 0;
}
constexpr callable_is_pow2_ is_pow2
Callable object computing the is_pow2 predicate.
Definition: is_pow2.hpp:72
constexpr callable_pi_ pi
Callable object computing the value.
Definition: pi.hpp:54
Wrapper for SIMD registers.
Definition: wide.hpp:65