Wraps a MatrixView with m rows around the given array.
For general matrices, the number of columns in the matrix
is set to a.length/m, whereas for triangular and symmetric
matrices the number of columns is set equal to the number
of rows.
this(T[] a, size_t m)
structMatrixView(T, Storage stor = Storage.General, Triangle tri = Triangle.Upper)
Wraps a MatrixView with m rows around the given array.
For general matrices, the number of columns in the matrix is set to a.length/m, whereas for triangular and symmetric matrices the number of columns is set equal to the number of rows.