Constructs a copy of given matrix transformed from some other instantiation of the FixedMatrix template with the same dimensions as the constructed one.
- Template Parameters
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| Val2 | is a type of elements of the given matrix which should be explicitly convertible to value_type. |
| Alloc2 | is a type of an allocator of the given matrix which should be explicitly convertible to allocator_type |
| Derived2_t | is a type derived from the parameter matrix type. |
- Parameters
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| r | is a given matrix instance of another type. It is converted to the current type with a result (of conversion) to be a constructed matrix. |