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

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.

Implementors