29 Numerics library [numerics]

29.10 Data-parallel types [simd]

29.10.7 basic_simd non-member operations [simd.nonmembers]

29.10.7.4 simd complex accessors [simd.complex.access]

constexpr auto real() const noexcept;
constexpr auto imag() const noexcept;

Constraints: simd-complex<basic_simd> is modeled.

Returns: An object of type rebind_t<typename T::value_type, basic_simd> where the

i^{th}

element is initialized to the result of cmplx-func(operator[](i)) for all i in the range [0, size()), where cmplx-func is the corresponding function from <complex>.

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template<simd-floating-point V>
  constexpr void real(const V& v) noexcept;
template<simd-floating-point V>
  constexpr void imag(const V& v) noexcept;

Constraints:

(3.1)
simd-complex<basic_simd> is modeled,
(3.2)
same_as<typename V::value_type, typename T::value_type> is modeled, and
(3.3)
V::size() == size() is true.

Effects: Replaces each element of the basic_simd object such that the

i^{th}

element is replaced with value_type(v[i], operator[](i).imag()) or value_type(operator[](i).real(), v[i]) for real and imag respectively, for all i in the range [0, size()).