// See www.openfst.org for extensive documentation on this weighted
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// finite-state transducer library.
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#ifndef FST_SCRIPT_DIFFERENCE_H_
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#define FST_SCRIPT_DIFFERENCE_H_
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#include <tuple>
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#include <fst/difference.h>
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#include <fst/script/compose.h>
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#include <fst/script/fst-class.h>
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namespace fst {
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namespace script {
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using DifferenceArgs = std::tuple<const FstClass &, const FstClass &,
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MutableFstClass *, const ComposeOptions &>;
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template <class Arc>
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void Difference(DifferenceArgs *args) {
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const Fst<Arc> &ifst1 = *(std::get<0>(*args).GetFst<Arc>());
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const Fst<Arc> &ifst2 = *(std::get<1>(*args).GetFst<Arc>());
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MutableFst<Arc> *ofst = std::get<2>(*args)->GetMutableFst<Arc>();
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const auto &opts = std::get<3>(*args);
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Difference(ifst1, ifst2, ofst, opts);
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}
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void Difference(const FstClass &ifst1, const FstClass &ifst2,
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MutableFstClass *ofst,
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const ComposeOptions &opts = ComposeOptions());
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} // namespace script
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} // namespace fst
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#endif // FST_SCRIPT_DIFFERENCE_H_
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