This file is indexed.

/usr/lib/R/site-library/irlba/INDEX is in r-cran-irlba 2.1.2-1.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

1
2
3
4
5
6
irlba                   Find a few approximate largest singular values
                        and corresponding singular vectors of a matrix.
partial_eigen           Find a few approximate largest eigenvalues and
                        corresponding eigenvectors of a symmetric
                        matrix.
prcomp_irlba            Principal Components Analysis