Found the following significant warnings:
  algos.cpp:199:24: warning: 'is_finite<double>' is deprecated: change arma::is_finite(val) to std::isfinite(val) [-Wdeprecated-declarations]
  algos.cpp:202:24: warning: 'is_finite<double>' is deprecated: change arma::is_finite(val) to std::isfinite(val) [-Wdeprecated-declarations]
  algos.cpp:214:16: warning: 'is_finite<double>' is deprecated: change arma::is_finite(val) to std::isfinite(val) [-Wdeprecated-declarations]
  algos.cpp:271:24: warning: 'is_finite<double>' is deprecated: change arma::is_finite(val) to std::isfinite(val) [-Wdeprecated-declarations]
  algos.cpp:278:28: warning: 'is_finite<double>' is deprecated: change arma::is_finite(val) to std::isfinite(val) [-Wdeprecated-declarations]
  algos.cpp:281:28: warning: 'is_finite<double>' is deprecated: change arma::is_finite(val) to std::isfinite(val) [-Wdeprecated-declarations]
  algos.cpp:296:16: warning: 'is_finite<double>' is deprecated: change arma::is_finite(val) to std::isfinite(val) [-Wdeprecated-declarations]
  algos.cpp:347:20: warning: 'is_finite<double>' is deprecated: change arma::is_finite(val) to std::isfinite(val) [-Wdeprecated-declarations]
  algos_custom.cpp:88:24: warning: 'is_finite<double>' is deprecated: change arma::is_finite(val) to std::isfinite(val) [-Wdeprecated-declarations]
  algos_custom.cpp:91:24: warning: 'is_finite<double>' is deprecated: change arma::is_finite(val) to std::isfinite(val) [-Wdeprecated-declarations]
  algos_custom.cpp:103:16: warning: 'is_finite<double>' is deprecated: change arma::is_finite(val) to std::isfinite(val) [-Wdeprecated-declarations]
  algos_custom.cpp:157:24: warning: 'is_finite<double>' is deprecated: change arma::is_finite(val) to std::isfinite(val) [-Wdeprecated-declarations]
  algos_custom.cpp:164:28: warning: 'is_finite<double>' is deprecated: change arma::is_finite(val) to std::isfinite(val) [-Wdeprecated-declarations]
  algos_custom.cpp:167:28: warning: 'is_finite<double>' is deprecated: change arma::is_finite(val) to std::isfinite(val) [-Wdeprecated-declarations]
  algos_custom.cpp:182:16: warning: 'is_finite<double>' is deprecated: change arma::is_finite(val) to std::isfinite(val) [-Wdeprecated-declarations]
  algos_custom.cpp:230:20: 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/cpss.Rcheck/00install.out’ for details.
* used C++ compiler: ‘Debian clang version 21.1.8 (1)’