/usr/include/NTL/mat_poly_ZZ.h is in libntl-dev 9.9.1-3.
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 11 12 13 | #ifndef NTL_mat_poly_ZZ__H
#define NTL_mat_poly_ZZ__H
#include <NTL/mat_ZZ.h>
#include <NTL/ZZX.h>
NTL_OPEN_NNS
void CharPoly(ZZX& f, const mat_ZZ& M, long deterministic=0);
NTL_CLOSE_NNS
#endif
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