tmp/tmpf3xelo9r/{from.md → to.md}
RENAMED
|
@@ -0,0 +1,26 @@
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 1 |
+
##### General <a id="mdspan.layout.general">[[mdspan.layout.general]]</a>
|
| 2 |
+
|
| 3 |
+
In subclauses [[mdspan.layout.reqmts]] and
|
| 4 |
+
[[mdspan.layout.policy.reqmts]]:
|
| 5 |
+
|
| 6 |
+
- `M` denotes a layout mapping class.
|
| 7 |
+
- `m` denotes a (possibly const) value of type `M`.
|
| 8 |
+
- `i` and `j` are packs of (possibly const) integers that are
|
| 9 |
+
multidimensional indices in `m.extents()` [[mdspan.overview]].
|
| 10 |
+
\[*Note 1*: The type of each element of the packs can be a different
|
| 11 |
+
integer type. — *end note*]
|
| 12 |
+
- `r` is a (possibly const) rank index of `typename M::extents_type`.
|
| 13 |
+
- `dᵣ` is a pack of (possibly const) integers for which
|
| 14 |
+
`sizeof...(dᵣ) == M::extents_type::rank()` is `true`, the rᵗʰ element
|
| 15 |
+
is equal to 1, and all other elements are equal to 0.
|
| 16 |
+
|
| 17 |
+
In subclauses [[mdspan.layout.reqmts]] through [[mdspan.layout.stride]],
|
| 18 |
+
let *`is-mapping-of`* be the exposition-only variable template defined
|
| 19 |
+
as follows:
|
| 20 |
+
|
| 21 |
+
``` cpp
|
| 22 |
+
template<class Layout, class Mapping>
|
| 23 |
+
constexpr bool is-mapping-of = // exposition only
|
| 24 |
+
is_same_v<typename Layout::template mapping<typename Mapping::extents_type>, Mapping>;
|
| 25 |
+
```
|
| 26 |
+
|