E.V.E
v2023.02.15

◆ is_imag

eve::is_imag = {}
inlineconstexpr

Returns a logical true if and only if the element value is imaginary.

For real entries 0 is the only imaginary number: its real part is 0!

Defined in Header

#include <eve/module/core.hpp>

Callable Signatures

namespace eve
{
template< eve::floating_value T >
eve::as_logical<T> is_imag(T x) noexcept;
}
constexpr callable_is_imag_ is_imag
Returns a logical true if and only if the element value is imaginary.
Definition: is_imag.hpp:63
Definition: abi.hpp:18

Parameters

Return value

Returns elementwise x == 0 for real entries.

Example

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

Semantic Modifiers

  • Masked Call

    The call eve;is_imag[mask](x) provides a masked version of eve::is_imag which is equivalent to if_else (mask, is_imag(x), eve::false( eve::as(x))).

    Example

    #include <eve/module/core.hpp>
    #include <eve/wide.hpp>
    #include <iostream>
    int main()
    {
    wide_ft pf = {0.0f, 1.0f, -0.0f, -2.0f};
    std::cout << "---- simd" << '\n'
    << "<- pf = " << pf << '\n'
    << "-> is_imag[is_positive(pf)](pf) = " << eve::is_imag[eve::is_positive(pf)](pf) << '\n';
    return 0;
    }
    constexpr callable_is_positive_ is_positive
    Returns a logical true if and only if the element value is signed and has its sign bit not set.
    Definition: is_positive.hpp:70