/usr/include/fst/extensions/pdt/pdtlib.h is in libfst-dev 1.6.3-2.
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 | // See www.openfst.org for extensive documentation on this weighted
// finite-state transducer library.
//
// This is an experimental push-down transducer (PDT) library. A PDT is
// encoded as an FST, where some transitions are labeled with open or close
// parentheses. To be interpreted as a PDT, the parentheses must balance on a
// path.
#ifndef FST_EXTENSIONS_PDT_PDTLIB_H_
#define FST_EXTENSIONS_PDT_PDTLIB_H_
#include <fst/extensions/pdt/compose.h>
#include <fst/extensions/pdt/expand.h>
#include <fst/extensions/pdt/pdt.h>
#include <fst/extensions/pdt/replace.h>
#include <fst/extensions/pdt/reverse.h>
#include <fst/extensions/pdt/shortest-path.h>
#endif // FST_EXTENSIONS_PDT_PDTLIB_H_
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