Found the following significant warnings:
  F.cpp:51:22: warning: 'is_finite<double>' is deprecated: change arma::is_finite(val) to std::isfinite(val) [-Wdeprecated-declarations]
  F.cpp:112:22: warning: 'is_finite<double>' is deprecated: change arma::is_finite(val) to std::isfinite(val) [-Wdeprecated-declarations]
  FKM_rcpp.cpp:87:14: warning: 'is_finite<double>' is deprecated: change arma::is_finite(val) to std::isfinite(val) [-Wdeprecated-declarations]
  FKM_rcpp.cpp:261:14: warning: 'is_finite<double>' is deprecated: change arma::is_finite(val) to std::isfinite(val) [-Wdeprecated-declarations]
  FKM_rcpp.cpp:431:27: warning: 'is_finite<arma::subview<double>>' is deprecated: change arma::is_finite(X) to X.is_finite() [-Wdeprecated-declarations]
  FKM_rcpp.cpp:476:14: warning: 'is_finite<double>' is deprecated: change arma::is_finite(val) to std::isfinite(val) [-Wdeprecated-declarations]
  FKM_rcpp.cpp:488:12: warning: 'is_finite<double>' is deprecated: change arma::is_finite(val) to std::isfinite(val) [-Wdeprecated-declarations]
  FKM_rcpp.cpp:587:29: warning: 'is_finite<arma::subview<double>>' is deprecated: change arma::is_finite(X) to X.is_finite() [-Wdeprecated-declarations]
  FKM_rcpp.cpp:710:14: warning: 'is_finite<double>' is deprecated: change arma::is_finite(val) to std::isfinite(val) [-Wdeprecated-declarations]
  FKM_rcpp.cpp:896:22: warning: 'is_finite<double>' is deprecated: change arma::is_finite(val) to std::isfinite(val) [-Wdeprecated-declarations]
  FKM_rcpp.cpp:919:14: warning: 'is_finite<double>' is deprecated: change arma::is_finite(val) to std::isfinite(val) [-Wdeprecated-declarations]
  FKM_rcpp.cpp:1018:20: warning: 'is_finite<double>' is deprecated: change arma::is_finite(val) to std::isfinite(val) [-Wdeprecated-declarations]
  FKM_rcpp.cpp:1137:27: warning: 'is_finite<arma::subview<double>>' is deprecated: change arma::is_finite(X) to X.is_finite() [-Wdeprecated-declarations]
  FKM_rcpp.cpp:1193:14: warning: 'is_finite<double>' is deprecated: change arma::is_finite(val) to std::isfinite(val) [-Wdeprecated-declarations]
  FKM_rcpp.cpp:1206:12: warning: 'is_finite<double>' is deprecated: change arma::is_finite(val) to std::isfinite(val) [-Wdeprecated-declarations]
  FKM_rcpp.cpp:1289:25: warning: 'is_finite<arma::subview<double>>' is deprecated: change arma::is_finite(X) to X.is_finite() [-Wdeprecated-declarations]
  FKM_rcpp.cpp:1450:14: warning: 'is_finite<double>' is deprecated: change arma::is_finite(val) to std::isfinite(val) [-Wdeprecated-declarations]
  FKM_rcpp.cpp:1644:14: warning: 'is_finite<double>' is deprecated: change arma::is_finite(val) to std::isfinite(val) [-Wdeprecated-declarations]
  FKM_rcpp.cpp:1880:14: warning: 'is_finite<double>' is deprecated: change arma::is_finite(val) to std::isfinite(val) [-Wdeprecated-declarations]
  FKM_rcpp.cpp:1892:12: warning: 'is_finite<double>' is deprecated: change arma::is_finite(val) to std::isfinite(val) [-Wdeprecated-declarations]
  FKM_rcpp.cpp:2004:29: warning: 'is_finite<arma::subview<double>>' is deprecated: change arma::is_finite(X) to X.is_finite() [-Wdeprecated-declarations]
  FKM_rcpp.cpp:2153:22: warning: 'is_finite<double>' is deprecated: change arma::is_finite(val) to std::isfinite(val) [-Wdeprecated-declarations]
  FKM_rcpp.cpp:2175:14: warning: 'is_finite<double>' is deprecated: change arma::is_finite(val) to std::isfinite(val) [-Wdeprecated-declarations]
  FKM_rcpp.cpp:2286:20: warning: 'is_finite<double>' is deprecated: change arma::is_finite(val) to std::isfinite(val) [-Wdeprecated-declarations]
  FKM_rcpp.cpp:2442:14: warning: 'is_finite<double>' is deprecated: change arma::is_finite(val) to std::isfinite(val) [-Wdeprecated-declarations]
  FKM_rcpp.cpp:2454:12: warning: 'is_finite<double>' is deprecated: change arma::is_finite(val) to std::isfinite(val) [-Wdeprecated-declarations]
  FKM_rcpp.cpp:2695:14: warning: 'is_finite<double>' is deprecated: change arma::is_finite(val) to std::isfinite(val) [-Wdeprecated-declarations]
  FKM_rcpp.cpp:2708:12: warning: 'is_finite<double>' is deprecated: change arma::is_finite(val) to std::isfinite(val) [-Wdeprecated-declarations]
  FKM_rcpp.cpp:2974:14: warning: 'is_finite<double>' is deprecated: change arma::is_finite(val) to std::isfinite(val) [-Wdeprecated-declarations]
  FKM_rcpp.cpp:2987:12: warning: 'is_finite<double>' is deprecated: change arma::is_finite(val) to std::isfinite(val) [-Wdeprecated-declarations]
  FKM_rcpp.cpp:3107:31: warning: 'is_finite<arma::subview<double>>' is deprecated: change arma::is_finite(X) to X.is_finite() [-Wdeprecated-declarations]
  FKM_rcpp.cpp:3272:24: warning: 'is_finite<double>' is deprecated: change arma::is_finite(val) to std::isfinite(val) [-Wdeprecated-declarations]
  FKM_rcpp.cpp:3299:14: warning: 'is_finite<double>' is deprecated: change arma::is_finite(val) to std::isfinite(val) [-Wdeprecated-declarations]
  FKM_rcpp.cpp:3417:22: warning: 'is_finite<double>' is deprecated: change arma::is_finite(val) to std::isfinite(val) [-Wdeprecated-declarations]
  FKM_rcpp.cpp:3541:29: warning: 'is_finite<arma::subview<double>>' is deprecated: change arma::is_finite(X) to X.is_finite() [-Wdeprecated-declarations]
  FKM_rcpp.cpp:3583:14: warning: 'is_finite<double>' is deprecated: change arma::is_finite(val) to std::isfinite(val) [-Wdeprecated-declarations]
  FKM_rcpp.cpp:3595:12: warning: 'is_finite<double>' is deprecated: change arma::is_finite(val) to std::isfinite(val) [-Wdeprecated-declarations]
  FKM_rcpp.cpp:3678:27: warning: 'is_finite<arma::subview<double>>' is deprecated: change arma::is_finite(X) to X.is_finite() [-Wdeprecated-declarations]
  FKM_rcpp.cpp:3857:27: warning: 'is_finite<arma::subview<double>>' is deprecated: change arma::is_finite(X) to X.is_finite() [-Wdeprecated-declarations]
  FKM_rcpp.cpp:3910:14: warning: 'is_finite<double>' is deprecated: change arma::is_finite(val) to std::isfinite(val) [-Wdeprecated-declarations]
  FKM_rcpp.cpp:3922:12: warning: 'is_finite<double>' is deprecated: change arma::is_finite(val) to std::isfinite(val) [-Wdeprecated-declarations]
  FKM_rcpp.cpp:4045:25: warning: 'is_finite<arma::subview<double>>' is deprecated: change arma::is_finite(X) to X.is_finite() [-Wdeprecated-declarations]
  FKM_rcpp.cpp:4242:17: warning: 'is_finite<double>' is deprecated: change arma::is_finite(val) to std::isfinite(val) [-Wdeprecated-declarations]
  FKM_rcpp.cpp:4253:14: warning: 'is_finite<double>' is deprecated: change arma::is_finite(val) to std::isfinite(val) [-Wdeprecated-declarations]
  FKM_rcpp.cpp:4381:17: warning: 'is_finite<double>' is deprecated: change arma::is_finite(val) to std::isfinite(val) [-Wdeprecated-declarations]
  FKM_rcpp.cpp:4542:17: warning: 'is_finite<double>' is deprecated: change arma::is_finite(val) to std::isfinite(val) [-Wdeprecated-declarations]
  FKM_rcpp.cpp:4555:14: warning: 'is_finite<double>' is deprecated: change arma::is_finite(val) to std::isfinite(val) [-Wdeprecated-declarations]
  FKM_rcpp.cpp:4698:15: warning: 'is_finite<double>' is deprecated: change arma::is_finite(val) to std::isfinite(val) [-Wdeprecated-declarations]
  func.cpp:124:23: warning: 'is_finite<double>' is deprecated: change arma::is_finite(val) to std::isfinite(val) [-Wdeprecated-declarations]
  func.cpp:124:50: warning: 'is_finite<double>' is deprecated: change arma::is_finite(val) to std::isfinite(val) [-Wdeprecated-declarations]
  memDeg.cpp:139:18: warning: 'is_finite<double>' is deprecated: change arma::is_finite(val) to std::isfinite(val) [-Wdeprecated-declarations]
See ‘/home/hornik/tmp/R.check/r-devel-clang/Work/PKGS/fclust.Rcheck/00install.out’ for details.
* used C compiler: ‘Debian clang version 19.1.7 (7)’
* used C++ compiler: ‘Debian clang version 19.1.7 (7)’