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std::experi...::fixed_size(3) C++ Standard Libarystd::experi...::fixed_size(3) NAME std::experimental::simd_abi::fixed_size - std::experimen- tal::simd_abi::fixed_size Synopsis Defined in header <experimental/simd> template < int N > (parallelism TS v2) struct fixed_size {}; The simd_abi::fixed_size<N> tag type ensures data-parallel types to store and manipulate N elements (i.e. simd<T, simd_abi::fixed_size<N>>::size() returns N). An implementation shall support at least all N [1 32]. Additionally, for every supported simd<T, Abi>, where Abi is an implementation-defined ABI tag, N = simd<T, Abi>::size() shall be supported. Notes An implementation may choose to forego ABI compatibility between differently compiled translation units for simd and simd_mask instantiations us- ing the same simd_abi::fixed_size<N> tag. Otherwise, the efficiency of simd<T, Abi> is likely to be better than simd<T, fixed_size<simd_size_v<T, Abi>>> (with Abi not an instance of simd_abi::fixed_size). See also max_fixed_size the maximum number of elements guaranteed to be supported by (parallelism TS v2) fixed (constant) scalar tag type for storing a single element (parallelism TS v2) (typedef) compatible tag type that ensures ABI compatibility (parallelism TS v2) (alias template) native tag type that is most efficient (parallelism TS v2) (alias template) deduce obtains an ABI type for given element type and number of deduce_t elements (parallelism TS v2) (class template) http://cppreference.com 2022.07.31 std::experi...::fixed_size(3)
NAME | Synopsis | Notes | See also
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