Return an identity matrix

# Lapack::identity

(PECL lapack >= 0.1.0)

Lapack::identity — Return an identity matrix

### Descrierea

public static Lapack::identity ( int `$n` ) : array

Return a size n identity matrix

### Parametri

`n`

  The height and width of the identity matrix.

### Valorile întoarse

Will return a an array of n arrays, each containing n entries. The diagonals of the matrix will be 1s, the other positions 0.