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

---
 src/armadillo/include/armadillo_bits/fn_pinv.hpp | 110 +++++++++++++++++++++++
 1 file changed, 110 insertions(+)
 create mode 100644 src/armadillo/include/armadillo_bits/fn_pinv.hpp

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

diff --git a/src/armadillo/include/armadillo_bits/fn_pinv.hpp b/src/armadillo/include/armadillo_bits/fn_pinv.hpp
new file mode 100644
index 0000000..6a87322
--- /dev/null
+++ b/src/armadillo/include/armadillo_bits/fn_pinv.hpp
@@ -0,0 +1,110 @@
+// 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_pinv
+//! @{
+
+
+
+template<typename T1>
+arma_warn_unused
+inline
+typename enable_if2< is_real<typename T1::pod_type>::value, const Op<T1, op_pinv_default> >::result
+pinv
+  (
+  const Base<typename T1::elem_type,T1>& X
+  )
+  {
+  arma_extra_debug_sigprint();
+  
+  return Op<T1, op_pinv_default>(X.get_ref());
+  }
+
+
+
+template<typename T1>
+arma_warn_unused
+inline
+typename enable_if2< is_real<typename T1::pod_type>::value, const Op<T1, op_pinv> >::result
+pinv
+  (
+  const Base<typename T1::elem_type,T1>& X,
+  const typename T1::pod_type            tol,
+  const char*                            method = nullptr
+  )
+  {
+  arma_extra_debug_sigprint();
+  
+  typedef typename T1::elem_type eT;
+  
+  uword method_id = 0;  // default setting
+  
+  if(method != nullptr)
+    {
+    const char sig = method[0];
+    
+    arma_debug_check( ((sig != 's') && (sig != 'd')), "pinv(): unknown method specified" );
+    
+    if(sig == 's')  { method_id = 1; }
+    if(sig == 'd')  { method_id = 2; }
+    }
+  
+  return Op<T1, op_pinv>(X.get_ref(), eT(tol), method_id, uword(0));
+  }
+
+
+
+template<typename T1>
+inline
+typename enable_if2< is_real<typename T1::pod_type>::value, bool >::result
+pinv
+  (
+         Mat<typename T1::elem_type>&    out,
+  const Base<typename T1::elem_type,T1>& X,
+  const typename T1::pod_type            tol    = 0.0,
+  const char*                            method = nullptr
+  )
+  {
+  arma_extra_debug_sigprint();
+  
+  uword method_id = 0;  // default setting
+  
+  if(method != nullptr)
+    {
+    const char sig = method[0];
+    
+    arma_debug_check( ((sig != 's') && (sig != 'd')), "pinv(): unknown method specified" );
+    
+    if(sig == 's')  { method_id = 1; }
+    if(sig == 'd')  { method_id = 2; }
+    }
+  
+  const bool status = op_pinv::apply_direct(out, X.get_ref(), tol, method_id);
+  
+  if(status == false)
+    {
+    out.soft_reset();
+    arma_debug_warn_level(3, "pinv(): svd failed");
+    }
+  
+  return status;
+  }
+
+
+
+//! @}
-- 
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