From eda5bc26f44ee9a6f83dcf8c91f17296d7fc509d Mon Sep 17 00:00:00 2001
From: Nao Pross <np@0hm.ch>
Date: Mon, 12 Feb 2024 14:52:43 +0100
Subject: Move into version control

---
 .../include/armadillo_bits/fn_eig_pair.hpp         | 144 +++++++++++++++++++++
 1 file changed, 144 insertions(+)
 create mode 100644 src/armadillo/include/armadillo_bits/fn_eig_pair.hpp

(limited to 'src/armadillo/include/armadillo_bits/fn_eig_pair.hpp')

diff --git a/src/armadillo/include/armadillo_bits/fn_eig_pair.hpp b/src/armadillo/include/armadillo_bits/fn_eig_pair.hpp
new file mode 100644
index 0000000..cef1389
--- /dev/null
+++ b/src/armadillo/include/armadillo_bits/fn_eig_pair.hpp
@@ -0,0 +1,144 @@
+// 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_pair
+//! @{
+
+
+template<typename T1, typename T2>
+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_pair
+  (
+  const Base<typename T1::elem_type, T1>& A_expr,
+  const Base<typename T1::elem_type, T2>& B_expr
+  )
+  {
+  arma_extra_debug_sigprint();
+  
+  typedef typename T1::pod_type T;
+  
+  Col< std::complex<T> > eigvals;
+  Mat< std::complex<T> > eigvecs;
+  
+  const bool status = auxlib::eig_pair(eigvals, eigvecs, false, A_expr.get_ref(), B_expr.get_ref());
+  
+  if(status == false)
+    {
+    eigvals.soft_reset();
+    arma_stop_runtime_error("eig_pair(): decomposition failed");
+    }
+  
+  return eigvals;
+  }
+
+
+
+template<typename T1, typename T2>
+inline
+typename enable_if2< is_supported_blas_type<typename T1::pod_type>::value, bool >::result
+eig_pair
+  (
+         Col< std::complex<typename T1::pod_type> >& eigvals,
+  const Base< typename T1::elem_type, T1 >&          A_expr,
+  const Base< typename T1::elem_type, T2 >&          B_expr
+  )
+  {
+  arma_extra_debug_sigprint();
+  
+  typedef typename T1::pod_type T;
+  
+  Mat< std::complex<T> > eigvecs;
+  
+  const bool status = auxlib::eig_pair(eigvals, eigvecs, false, A_expr.get_ref(), B_expr.get_ref());
+  
+  if(status == false)
+    {
+    eigvals.soft_reset();
+    arma_debug_warn_level(3, "eig_pair(): decomposition failed");
+    }
+  
+  return status;
+  }
+
+
+
+template<typename T1, typename T2>
+inline
+typename enable_if2< is_supported_blas_type<typename T1::pod_type>::value, bool >::result
+eig_pair
+  (
+         Col< std::complex<typename T1::pod_type> >& eigvals,
+         Mat< std::complex<typename T1::pod_type> >& eigvecs,
+  const Base< typename T1::elem_type, T1 >&          A_expr,
+  const Base< typename T1::elem_type, T2 >&          B_expr
+  )
+  {
+  arma_extra_debug_sigprint();
+  
+  arma_debug_check( (void_ptr(&eigvals) == void_ptr(&eigvecs)), "eig_pair(): parameter 'eigval' is an alias of parameter 'eigvec'" );
+  
+  const bool status = auxlib::eig_pair(eigvals, eigvecs, true, A_expr.get_ref(), B_expr.get_ref());
+  
+  if(status == false)
+    {
+    eigvals.soft_reset();
+    eigvecs.soft_reset();
+    arma_debug_warn_level(3, "eig_pair(): decomposition failed");
+    }
+  
+  return status;
+  }
+
+
+
+template<typename T1, typename T2>
+inline
+typename enable_if2< is_supported_blas_type<typename T1::pod_type>::value, bool >::result
+eig_pair
+  (
+         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 >&          A_expr,
+  const Base< typename T1::elem_type, T2 >&          B_expr
+  )
+  {
+  arma_extra_debug_sigprint();
+  
+  arma_debug_check( (void_ptr(&eigvals)  == void_ptr(&leigvecs)), "eig_pair(): parameter 'eigval' is an alias of parameter 'leigvec'" );
+  arma_debug_check( (void_ptr(&eigvals)  == void_ptr(&reigvecs)), "eig_pair(): parameter 'eigval' is an alias of parameter 'reigvec'" );
+  arma_debug_check( (void_ptr(&leigvecs) == void_ptr(&reigvecs)), "eig_pair(): parameter 'leigvec' is an alias of parameter 'reigvec'" );
+  
+  const bool status = auxlib::eig_pair_twosided(eigvals, leigvecs, reigvecs, A_expr.get_ref(), B_expr.get_ref());
+  
+  if(status == false)
+    {
+     eigvals.soft_reset();
+    leigvecs.soft_reset();
+    reigvecs.soft_reset();
+    arma_debug_warn_level(3, "eig_pair(): decomposition failed");
+    }
+  
+  return status;
+  }
+
+
+
+//! @}
-- 
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