1 files changed, 170 insertions, 0 deletions
diff --git a/src/armadillo/include/armadillo_bits/fn_eig_gen.hpp b/src/armadillo/include/armadillo_bits/fn_eig_gen.hpp
new file mode 100644
index 0000000..ad22821
--- /dev/null
+++ b/src/armadillo/include/armadillo_bits/fn_eig_gen.hpp
@@ -0,0 +1,170 @@
+// SPDX-License-Identifier: Apache-2.0
+// 
+// Copyright 2008-2016 Conrad Sanderson (http://conradsanderson.id.au)
+// Copyright 2008-2016 National ICT Australia (NICTA)
+// 
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+// http://www.apache.org/licenses/LICENSE-2.0
+// 
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+// ------------------------------------------------------------------------
+
+
+//! \addtogroup fn_eig_gen
+//! @{
+
+
+template<typename T1>
+arma_warn_unused
+inline
+typename enable_if2< is_supported_blas_type<typename T1::pod_type>::value, Col< std::complex<typename T1::pod_type> > >::result
+eig_gen
+  (
+  const Base<typename T1::elem_type, T1>& expr,
+  const char* option = "nobalance"
+  )
+  {
+  arma_extra_debug_sigprint();
+  
+  typedef typename T1::pod_type     T;
+  typedef typename std::complex<T> eT;
+  
+  const char sig = (option != nullptr) ? option[0] : char(0);
+  
+  arma_debug_check( ((sig != 'n') && (sig != 'b')), "eig_gen(): unknown option" );
+  
+  if( auxlib::crippled_lapack(expr) && (sig == 'b') )  { arma_debug_warn_level(1,  "eig_gen(): 'balance' option ignored due to linking with crippled lapack"); }
+  
+  Col<eT> eigvals;
+  Mat<eT> eigvecs;
+  
+  const bool status = (sig == 'b') ? auxlib::eig_gen_balance(eigvals, eigvecs, false, expr.get_ref()) : auxlib::eig_gen(eigvals, eigvecs, false, expr.get_ref());
+  
+  if(status == false)
+    {
+    eigvals.soft_reset();
+    arma_stop_runtime_error("eig_gen(): decomposition failed");
+    }
+  
+  return eigvals;
+  }
+
+
+
+template<typename T1>
+inline
+typename enable_if2< is_supported_blas_type<typename T1::pod_type>::value, bool >::result
+eig_gen
+  (
+         Col< std::complex<typename T1::pod_type> >& eigvals,
+  const Base< typename T1::elem_type, T1>&           expr,
+  const char* option = "nobalance"
+  )
+  {
+  arma_extra_debug_sigprint();
+  
+  typedef typename T1::pod_type     T;
+  typedef typename std::complex<T> eT;
+  
+  const char sig = (option != nullptr) ? option[0] : char(0);
+  
+  arma_debug_check( ((sig != 'n') && (sig != 'b')), "eig_gen(): unknown option" );
+  
+  if( auxlib::crippled_lapack(expr) && (sig == 'b') )  { arma_debug_warn_level(1,  "eig_gen(): 'balance' option ignored due to linking with crippled lapack"); }
+  
+  Mat<eT> eigvecs;
+  
+  const bool status = (sig == 'b') ? auxlib::eig_gen_balance(eigvals, eigvecs, false, expr.get_ref()) : auxlib::eig_gen(eigvals, eigvecs, false, expr.get_ref());
+  
+  if(status == false)
+    {
+    eigvals.soft_reset();
+    arma_debug_warn_level(3, "eig_gen(): decomposition failed");
+    }
+  
+  return status;
+  }
+
+
+
+template<typename T1>
+inline
+typename enable_if2< is_supported_blas_type<typename T1::pod_type>::value, bool >::result
+eig_gen
+  (
+        Col< std::complex<typename T1::pod_type> >& eigvals,
+        Mat< std::complex<typename T1::pod_type> >& eigvecs,
+  const Base<typename T1::elem_type, T1>&           expr,
+  const char* option = "nobalance"
+  )
+  {
+  arma_extra_debug_sigprint();
+  
+  arma_debug_check( (void_ptr(&eigvals) == void_ptr(&eigvecs)), "eig_gen(): parameter 'eigval' is an alias of parameter 'eigvec'" );
+  
+  const char sig = (option != nullptr) ? option[0] : char(0);
+  
+  arma_debug_check( ((sig != 'n') && (sig != 'b')), "eig_gen(): unknown option" );
+  
+  if( auxlib::crippled_lapack(expr) && (sig == 'b') )  { arma_debug_warn_level(1,  "eig_gen(): 'balance' option ignored due to linking with crippled lapack"); }
+  
+  const bool status = (sig == 'b') ? auxlib::eig_gen_balance(eigvals, eigvecs, true, expr.get_ref()) : auxlib::eig_gen(eigvals, eigvecs, true, expr.get_ref());
+  
+  if(status == false)
+    {
+    eigvals.soft_reset();
+    eigvecs.soft_reset();
+    arma_debug_warn_level(3, "eig_gen(): decomposition failed");
+    }
+  
+  return status;
+  }
+
+
+
+template<typename T1>
+inline
+typename enable_if2< is_supported_blas_type<typename T1::pod_type>::value, bool >::result
+eig_gen
+  (
+        Col< std::complex<typename T1::pod_type> >&  eigvals,
+        Mat< std::complex<typename T1::pod_type> >& leigvecs,
+        Mat< std::complex<typename T1::pod_type> >& reigvecs,
+  const Base<typename T1::elem_type, T1>&           expr,
+  const char* option = "nobalance"
+  )
+  {
+  arma_extra_debug_sigprint();
+  
+  arma_debug_check( (void_ptr(&eigvals)  == void_ptr(&leigvecs)), "eig_gen(): parameter 'eigval' is an alias of parameter 'leigvec'" );
+  arma_debug_check( (void_ptr(&eigvals)  == void_ptr(&reigvecs)), "eig_gen(): parameter 'eigval' is an alias of parameter 'reigvec'" );
+  arma_debug_check( (void_ptr(&leigvecs) == void_ptr(&reigvecs)), "eig_gen(): parameter 'leigvec' is an alias of parameter 'reigvec'" );
+  
+  const char sig = (option != nullptr) ? option[0] : char(0);
+  
+  arma_debug_check( ((sig != 'n') && (sig != 'b')), "eig_gen(): unknown option" );
+  
+  if( auxlib::crippled_lapack(expr) && (sig == 'b') )  { arma_debug_warn_level(1,  "eig_gen(): 'balance' option ignored due to linking with crippled lapack"); }
+  
+  const bool status = (sig == 'b') ? auxlib::eig_gen_twosided_balance(eigvals, leigvecs, reigvecs, expr.get_ref()) : auxlib::eig_gen_twosided(eigvals, leigvecs, reigvecs, expr.get_ref());
+  
+  if(status == false)
+    {
+     eigvals.soft_reset();
+    leigvecs.soft_reset();
+    reigvecs.soft_reset();
+    arma_debug_warn_level(3, "eig_gen(): decomposition failed");
+    }
+  
+  return status;
+  }
+
+
+
+//! @}