Found the following significant warnings:
  hkevp.cpp:146:25: warning: ‘bool arma::is_finite(const Base<typename T1::elem_type, T1>&) [with T1 = Mat<double>; typename T1::elem_type = double]’ is deprecated: change arma::is_finite(X) to X.is_finite() [-Wdeprecated-declarations]
  hkevp.cpp:171:34: warning: ‘bool arma::is_finite(const Base<typename T1::elem_type, T1>&) [with T1 = Mat<double>; typename T1::elem_type = double]’ is deprecated: change arma::is_finite(X) to X.is_finite() [-Wdeprecated-declarations]
  hkevp.cpp:179:34: warning: ‘bool arma::is_finite(const Base<typename T1::elem_type, T1>&) [with T1 = Mat<double>; typename T1::elem_type = double]’ is deprecated: change arma::is_finite(X) to X.is_finite() [-Wdeprecated-declarations]
  hkevp.cpp:198:34: warning: ‘bool arma::is_finite(const Base<typename T1::elem_type, T1>&) [with T1 = Mat<double>; typename T1::elem_type = double]’ is deprecated: change arma::is_finite(X) to X.is_finite() [-Wdeprecated-declarations]
  hkevp.cpp:206:34: warning: ‘bool arma::is_finite(const Base<typename T1::elem_type, T1>&) [with T1 = Mat<double>; typename T1::elem_type = double]’ is deprecated: change arma::is_finite(X) to X.is_finite() [-Wdeprecated-declarations]
  hkevp.cpp:361:23: warning: ‘bool arma::is_finite(eT, const typename arma_scalar_only<T>::result*) [with eT = double; typename arma_scalar_only<T>::result = double]’ is deprecated: change arma::is_finite(val) to std::isfinite(val) [-Wdeprecated-declarations]
  hkevp.cpp:445:67: warning: ‘bool arma::is_finite(eT, const typename arma_scalar_only<T>::result*) [with eT = double; typename arma_scalar_only<T>::result = double]’ is deprecated: change arma::is_finite(val) to std::isfinite(val) [-Wdeprecated-declarations]
  hkevp.cpp:474:67: warning: ‘bool arma::is_finite(eT, const typename arma_scalar_only<T>::result*) [with eT = double; typename arma_scalar_only<T>::result = double]’ is deprecated: change arma::is_finite(val) to std::isfinite(val) [-Wdeprecated-declarations]
  hkevp.cpp:505:65: warning: ‘bool arma::is_finite(eT, const typename arma_scalar_only<T>::result*) [with eT = double; typename arma_scalar_only<T>::result = double]’ is deprecated: change arma::is_finite(val) to std::isfinite(val) [-Wdeprecated-declarations]
  hkevp.cpp:533:63: warning: ‘bool arma::is_finite(eT, const typename arma_scalar_only<T>::result*) [with eT = double; typename arma_scalar_only<T>::result = double]’ is deprecated: change arma::is_finite(val) to std::isfinite(val) [-Wdeprecated-declarations]
  hkevp.cpp:572:69: warning: ‘bool arma::is_finite(eT, const typename arma_scalar_only<T>::result*) [with eT = double; typename arma_scalar_only<T>::result = double]’ is deprecated: change arma::is_finite(val) to std::isfinite(val) [-Wdeprecated-declarations]
  hkevp.cpp:632:69: warning: ‘bool arma::is_finite(eT, const typename arma_scalar_only<T>::result*) [with eT = double; typename arma_scalar_only<T>::result = double]’ is deprecated: change arma::is_finite(val) to std::isfinite(val) [-Wdeprecated-declarations]
  hkevp.cpp:651:67: warning: ‘bool arma::is_finite(eT, const typename arma_scalar_only<T>::result*) [with eT = double; typename arma_scalar_only<T>::result = double]’ is deprecated: change arma::is_finite(val) to std::isfinite(val) [-Wdeprecated-declarations]
  hkevp.cpp:834:23: warning: ‘bool arma::is_finite(eT, const typename arma_scalar_only<T>::result*) [with eT = double; typename arma_scalar_only<T>::result = double]’ is deprecated: change arma::is_finite(val) to std::isfinite(val) [-Wdeprecated-declarations]
  hkevp.cpp:904:67: warning: ‘bool arma::is_finite(eT, const typename arma_scalar_only<T>::result*) [with eT = double; typename arma_scalar_only<T>::result = double]’ is deprecated: change arma::is_finite(val) to std::isfinite(val) [-Wdeprecated-declarations]
  hkevp.cpp:933:67: warning: ‘bool arma::is_finite(eT, const typename arma_scalar_only<T>::result*) [with eT = double; typename arma_scalar_only<T>::result = double]’ is deprecated: change arma::is_finite(val) to std::isfinite(val) [-Wdeprecated-declarations]
  hkevp.cpp:964:65: warning: ‘bool arma::is_finite(eT, const typename arma_scalar_only<T>::result*) [with eT = double; typename arma_scalar_only<T>::result = double]’ is deprecated: change arma::is_finite(val) to std::isfinite(val) [-Wdeprecated-declarations]
  hkevp.cpp:992:65: warning: ‘bool arma::is_finite(eT, const typename arma_scalar_only<T>::result*) [with eT = double; typename arma_scalar_only<T>::result = double]’ is deprecated: change arma::is_finite(val) to std::isfinite(val) [-Wdeprecated-declarations]
  hkevp.cpp:1184:23: warning: ‘bool arma::is_finite(eT, const typename arma_scalar_only<T>::result*) [with eT = double; typename arma_scalar_only<T>::result = double]’ is deprecated: change arma::is_finite(val) to std::isfinite(val) [-Wdeprecated-declarations]
  hkevp.cpp:1249:69: warning: ‘bool arma::is_finite(eT, const typename arma_scalar_only<T>::result*) [with eT = double; typename arma_scalar_only<T>::result = double]’ is deprecated: change arma::is_finite(val) to std::isfinite(val) [-Wdeprecated-declarations]
  hkevp.cpp:1309:69: warning: ‘bool arma::is_finite(eT, const typename arma_scalar_only<T>::result*) [with eT = double; typename arma_scalar_only<T>::result = double]’ is deprecated: change arma::is_finite(val) to std::isfinite(val) [-Wdeprecated-declarations]
  hkevp.cpp:1328:67: warning: ‘bool arma::is_finite(eT, const typename arma_scalar_only<T>::result*) [with eT = double; typename arma_scalar_only<T>::result = double]’ is deprecated: change arma::is_finite(val) to std::isfinite(val) [-Wdeprecated-declarations]
See ‘/home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/hkevp.Rcheck/00install.out’ for details.
* used C++ compiler: ‘g++-15 (Debian 15.2.0-4) 15.2.0’