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Defined in header <simd> | ||
template<class T,class Abi=/*native-abi*/<T>> class basic_simd; | (1) | (since C++26) |
template<class T,/*simd-size-type*/ N=/*simd-size-v*/<T,/*native-abi*/<T>>> using simd= basic_simd<T,/*deduce-abi-t*/<T, N>>; | (2) | (since C++26) |
std::datapar::basic_simd specialization is a data-parallel type. The default ABI tag is determined by the implementation at compile-time.std::datapar::simd is an alias template that allows users to specify the width to a certain size. The default width is determined by the implementation at compile-time.Every specialization ofbasic_simd is a complete type. The specialization is
T is avectorizable type, and there exists valueM in the range[1, 64] such thatAbi isdeduce-abi-t<T, M>,T is not a vectorizable type,Ifbasic_simd<T, Abi> is disabled, the specialization has all deleted default constructor, destructor, copy constructor, and copy assignment. In addition, only the member types below are present.
Ifbasic_simd<T, Abi> is enabled,basic_simd<T, Abi> isTriviallyCopyable.
Contents |
| T | - | element type; a vectorizable type |
| Abi | - | tag type used to determine the width and storage |
| N | - | the width of the data-parallel type; the number of elements |
| Type | Definition |
value_type | T |
mask_type | datapar::basic_simd_mask<sizeof(T), Abi> |
abi_type | Abi |
| Name | Description |
constexprstd::integral_constant< simd-size-type, simd-size-v<T, Abi>> size[static] | the width ofbasic_simd(public static member constant) |
constructs abasic_simd object(public member function)[edit] | |
| accesses specified element (public member function)[edit] | |
| element-wise increment and decrement (public member function)[edit] | |
| element-wise unary operators (public member function)[edit] |
| element-wise binary operators (function)[edit] | |
| element-wise compound binary operators (function)[edit] | |
| element-wise relational operators (function)[edit] |
specializes element-wise selection forsimd_select(exposition-only function*)[edit] |
template<class R,class...Ts> basic_simd( R&& r, Ts...)->/* see below */; | (since C++26) | |
The deduction guide is present only if:
R modelscontiguous_range andsized_range, andThe deduced type is equivalent todatapar::simd<ranges::range_value_t<R>,ranges::size(r)>.
Implementations are recommended to support explicit conversions between enabled specializations ofbasic_simd and appropriate implementation-defined types. These appropriate types are non-standard vector types which are available in the implementation.
| This section is incomplete Reason: no example |
(C++26) | data-parallel type with the element typebool (class template)[edit] |
(C++26) | convenience alias template forbasic_simd_mask that can specify its width(alias template)[edit] |
| numeric arrays, array masks and array slices (class template)[edit] |
