tmp/tmptrwkl8k1/{from.md → to.md}
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###### `layout_right_padded` specialization of `submdspan_mapping` <a id="mdspan.sub.map.rightpad">[[mdspan.sub.map.rightpad]]</a>
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``` cpp
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template<class Extents>
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template<class... SliceSpecifiers>
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constexpr auto layout_right_padded::mapping<Extents>::submdspan-mapping-impl(
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SliceSpecifiers... slices) const -> see below;
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```
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*Returns:*
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- `submdspan_mapping_result{*this, 0}`, if *`rank_`*` == 0` is `true`;
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- otherwise,
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`submdspan_mapping_result{layout_right::mapping(sub_ext), offset}`, if
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*`rank_`*` == 1` is `true` or `SubExtents::rank() == 0` is `true`;
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- otherwise,
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`submdspan_mapping_result{layout_right::mapping(sub_ext), offset}`, if
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- `SubExtents::rank() == 1` is `true` and
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- for k equal to *`rank_`*` - 1`, Sₖ is a unit-stride slice for
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`mapping`;
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- otherwise,
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``` cpp
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submdspan_mapping_result{layout_right_padded<S_static>::mapping(sub_ext,
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stride(rank_ - u - 2)), offset}
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```
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if for a value u for which *`rank_`*` - `u` - 2` is the largest value
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p smaller than *`rank_`*` - 1` for which Sₚ is a unit-stride slice for
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`mapping`, the following conditions are met:
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- for k equal to *`rank_`*` - 1`, Sₖ is a unit-stride slice for
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`mapping`; and
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- for each k in the range
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\[*`rank_`*` - SubExtents::rank() - `u` + 1`,
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*`rank_`*` - `u` - 1)`), `is_convertible_v<`Sₖ`, full_extent_t>` is
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`true`; and
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- for k equal to *`rank_`*` - SubExtents::rank() - `u, Sₖ is a
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unit-stride slice for `mapping`;
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and where `S_static` is:
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- `dynamic_extent` if *static-padding-stride* is `dynamic_extent` or
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for any k in the range \[*`rank_`*` - `u` - 1`, *`rank_`*` - 1`)
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`static_extent(`k`)` is `dynamic_extent`,
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- otherwise, the product of *static-padding-stride* and all values
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`static_extent(`k`)` with k in the range \[*`rank_`*` - `u` - 1`,
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*`rank_`*` - 1`);
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- otherwise,
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``` cpp
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submdspan_mapping_result{layout_stride::mapping(sub_ext, sub_strides), offset}
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```
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