/usr/include/ITK-4.9/lapack/double/dgges.h is in libinsighttoolkit4-dev 4.9.0-4ubuntu1.
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 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 | extern int v3p_netlib_dgges_(
char v3p_netlib_const *jobvsl,
char v3p_netlib_const *jobvsr,
char v3p_netlib_const *sort,
v3p_netlib_logical (*delctg)(v3p_netlib_doublereal*,
v3p_netlib_doublereal*,
v3p_netlib_doublereal*),
v3p_netlib_integer *n,
v3p_netlib_doublereal *a,
v3p_netlib_integer *lda,
v3p_netlib_doublereal *b,
v3p_netlib_integer *ldb,
v3p_netlib_integer *sdim,
v3p_netlib_doublereal *alphar,
v3p_netlib_doublereal *alphai,
v3p_netlib_doublereal *beta,
v3p_netlib_doublereal *vsl,
v3p_netlib_integer *ldvsl,
v3p_netlib_doublereal *vsr,
v3p_netlib_integer *ldvsr,
v3p_netlib_doublereal *work,
v3p_netlib_integer *lwork,
v3p_netlib_logical *bwork,
v3p_netlib_integer *info,
v3p_netlib_ftnlen jobvsl_len,
v3p_netlib_ftnlen jobvsr_len,
v3p_netlib_ftnlen sort_len
);
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