std::experimental::simd_abi:: fixed_size
|
Defined in header
<experimental/simd>
|
||
|
template
<
int
N
>
struct fixed_size { } ; |
(parallelism TS v2) | |
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 using 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
).
Example
|
This section is incomplete
Reason: no example |
See also
|
(parallelism TS v2)
|
the maximum number of elements guaranteed to be supported by fixed
(constant) |
|
(parallelism TS v2)
|
tag type for storing a single element
(typedef) |
|
(parallelism TS v2)
|
tag type that ensures ABI compatibility
(alias template) |
|
(parallelism TS v2)
|
tag type that is most efficient
(alias template) |
|
(parallelism TS v2)
|
obtains an ABI type for given element type and number of elements
(class template) |