29 Numerics library [numerics]

29.10 Data-parallel types [simd]

29.10.8 Class template basic_simd_mask [simd.mask.class]

29.10.8.2 basic_simd_mask constructors [simd.mask.ctor]

constexpr explicit basic_simd_mask(value_type x) noexcept;

Effects: Initializes each element with x.

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template<size_t UBytes, class UAbi>
  constexpr explicit basic_simd_mask(const basic_simd_mask<UBytes, UAbi>& x) noexcept;

Constraints: basic_simd_mask<UBytes, UAbi>::size() == size() is true.

Effects: Initializes the

i^{th}

element with x[i] for all i in the range of [0, size()).

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template<class G> constexpr explicit basic_simd_mask(G&& gen) noexcept;

Constraints: The expression gen(integral_constant<simd-size-type, i>()) is well-formed and its type is bool for all i in the range of [0, size()).

Effects: Initializes the

i^{th}

element with gen(integral_constant<simd-size-type, i>()) for all i in the range of [0, size()).

Remarks: The calls to gen are unsequenced with respect to each other.

Vectorization-unsafe ([algorithms.parallel.defns]) standard library functions may not be invoked by gen.

gen is invoked exactly once for each i.