Add as_ptr and as_mut_ptr methods
This is useful for moving around a matrix/slice in unsafe code and for
converting slices to other types (e.g. `ndarray::ArrayView`).
@@ -274,6 +274,15 @@ impl<N: Scalar, R: Dim, C: Dim, S: Storage<N, R, C>> Matrix<N, R, C, S> {
self.data.get_unchecked(irow, icol)
}
+ /// Returns a pointer to the start of the matrix.
+ ///
+ /// If the matrix is not empty, this pointer is guaranteed to be aligned
+ /// and non-null.
+ #[inline]
+ pub fn as_ptr(&self) -> *const N {
+ self.data.ptr()
+ }
+
/// Tests whether `self` and `rhs` are equal up to a given epsilon.
///
/// See `relative_eq` from the `RelativeEq` trait for more details.
@@ -550,6 +559,15 @@ impl<N: Scalar, R: Dim, C: Dim, S: StorageMut<N, R, C>> Matrix<N, R, C, S> {
MatrixIterMut::new(&mut self.data)
}
+ /// Returns a mutable pointer to the start of the matrix.
+ ///
+ /// If the matrix is not empty, this pointer is guaranteed to be aligned
+ /// and non-null.
+ #[inline]
+ pub fn as_mut_ptr(&mut self) -> *mut N {
+ self.data.ptr_mut()
+ }
+
/// Gets a mutable reference to the i-th element of this matrix.
#[inline]
pub unsafe fn get_unchecked_mut(&mut self, irow: usize, icol: usize) -> &mut N {
