/usr/include/shogun/evaluation/ica/PermutationMatrix.h is in libshogun-dev 3.2.0-7.3build4.
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 7 8 9 10 | #include <shogun/lib/SGMatrix.h>
#ifdef HAVE_EIGEN3
/*
Function that tests if a SGMatrix is a permutation matrix
*/
bool is_permutation_matrix(shogun::SGMatrix<float64_t> m);
#endif //HAVE_EIGEN3
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