cppdraft_translate/cppdraft/simd/mask/reductions.md

[simd.mask.reductions]

29 Numerics library [numerics]

29.10 Data-parallel types [simd]

29.10.10 basic_mask non-member operations [simd.mask.nonmembers]

29.10.10.5 basic_mask reductions [simd.mask.reductions]

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template<size_t Bytes, class Abi> constexpr bool all_of(const basic_mask<Bytes, Abi>& k) noexcept;

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Returns: true if all boolean elements in k are true, otherwisefalse.

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template<size_t Bytes, class Abi> constexpr bool any_of(const basic_mask<Bytes, Abi>& k) noexcept;

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Returns: true if at least one boolean element in k is true, otherwise false.

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template<size_t Bytes, class Abi> constexpr bool none_of(const basic_mask<Bytes, Abi>& k) noexcept;

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Returns: !any_of(k).

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template<size_t Bytes, class Abi> constexpr simd-size-type reduce_count(const basic_mask<Bytes, Abi>& k) noexcept;

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Returns: The number of boolean elements in k that are true.

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template<size_t Bytes, class Abi> constexpr simd-size-type reduce_min_index(const basic_mask<Bytes, Abi>& k);

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Preconditions: any_of(k) is true.

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Returns: The lowest element index i where k[i] is true.

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template<size_t Bytes, class Abi> constexpr simd-size-type reduce_max_index(const basic_mask<Bytes, Abi>& k);

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Preconditions: any_of(k) is true.

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Returns: The greatest element index i where k[i] is true.

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constexpr bool all_of([same_as](concept.same#concept:same_as "18.4.2 Concept same_­as [concept.same]")<bool> auto x) noexcept; constexpr bool any_of([same_as](concept.same#concept:same_as "18.4.2 Concept same_­as [concept.same]")<bool> auto x) noexcept; constexpr simd-size-type reduce_count([same_as](concept.same#concept:same_as "18.4.2 Concept same_­as [concept.same]")<bool> auto x) noexcept;

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Returns: x.

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constexpr bool none_of([same_as](concept.same#concept:same_as "18.4.2 Concept same_­as [concept.same]")<bool> auto x) noexcept;

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Returns: !x.

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constexpr simd-size-type reduce_min_index([same_as](concept.same#concept:same_as "18.4.2 Concept same_­as [concept.same]")<bool> auto x); constexpr simd-size-type reduce_max_index([same_as](concept.same#concept:same_as "18.4.2 Concept same_­as [concept.same]")<bool> auto x);

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Preconditions: x is true.

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Returns: 0.