Trait nalgebra::base::allocator::Reallocator [−][src]
pub trait Reallocator<T: Scalar, RFrom: Dim, CFrom: Dim, RTo: Dim, CTo: Dim>: Allocator<T, RFrom, CFrom> + Allocator<T, RTo, CTo> {
unsafe fn reallocate_copy(
nrows: RTo,
ncols: CTo,
buf: <Self as Allocator<T, RFrom, CFrom>>::Buffer
) -> <Self as Allocator<T, RTo, CTo>>::BufferUninit;
}Expand description
A matrix reallocator. Changes the size of the memory buffer that initially contains (RFrom ×
CFrom) elements to a smaller or larger size (RTo, CTo).
Required methods
unsafe fn reallocate_copy(
nrows: RTo,
ncols: CTo,
buf: <Self as Allocator<T, RFrom, CFrom>>::Buffer
) -> <Self as Allocator<T, RTo, CTo>>::BufferUninit
unsafe fn reallocate_copy(
nrows: RTo,
ncols: CTo,
buf: <Self as Allocator<T, RFrom, CFrom>>::Buffer
) -> <Self as Allocator<T, RTo, CTo>>::BufferUninit
Reallocates a buffer of shape (RTo, CTo), possibly reusing a previously allocated buffer
buf. Data stored by buf are linearly copied to the output:
Safety
The following invariants must be respected by the implementors of this method:
- The copy is performed as if both were just arrays (without taking into account the matrix structure).
- If the underlying buffer is being shrunk, the removed elements must not be dropped by this method. Dropping them is the responsibility of the caller.