1 files changed, 469 insertions, 0 deletions
diff --git a/src/armadillo/include/armadillo_bits/fn_find.hpp b/src/armadillo/include/armadillo_bits/fn_find.hpp
new file mode 100644
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--- /dev/null
+++ b/src/armadillo/include/armadillo_bits/fn_find.hpp
@@ -0,0 +1,469 @@
+// 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_find
+//! @{
+
+
+
+template<typename T1>
+arma_warn_unused
+inline
+typename
+enable_if2
+  <
+  is_arma_type<T1>::value,
+  const mtOp<uword, T1, op_find_simple>
+  >::result
+find(const T1& X)
+  {
+  arma_extra_debug_sigprint();
+  
+  return mtOp<uword, T1, op_find_simple>(X);
+  }
+
+
+
+template<typename T1>
+arma_warn_unused
+inline
+const mtOp<uword, T1, op_find>
+find(const Base<typename T1::elem_type,T1>& X, const uword k, const char* direction = "first")
+  {
+  arma_extra_debug_sigprint();
+  
+  const char sig = (direction != nullptr) ? direction[0] : char(0);
+  
+  arma_debug_check
+    (
+    ( (sig != 'f') && (sig != 'F') && (sig != 'l') && (sig != 'L') ),
+    "find(): direction must be \"first\" or \"last\""
+    );
+  
+  const uword type = ( (sig == 'f') || (sig == 'F') ) ? 0 : 1;
+  
+  return mtOp<uword, T1, op_find>(X.get_ref(), k, type);
+  }
+
+
+
+//
+
+
+
+template<typename T1>
+arma_warn_unused
+inline
+uvec
+find(const BaseCube<typename T1::elem_type,T1>& X)
+  {
+  arma_extra_debug_sigprint();
+  
+  typedef typename T1::elem_type eT;
+  
+  const unwrap_cube<T1> tmp(X.get_ref());
+  
+  const Mat<eT> R( const_cast< eT* >(tmp.M.memptr()), tmp.M.n_elem, 1, false );
+  
+  return find(R);
+  }
+
+
+
+template<typename T1>
+arma_warn_unused
+inline
+uvec
+find(const BaseCube<typename T1::elem_type,T1>& X, const uword k, const char* direction = "first")
+  {
+  arma_extra_debug_sigprint();
+  
+  typedef typename T1::elem_type eT;
+  
+  const unwrap_cube<T1> tmp(X.get_ref());
+  
+  const Mat<eT> R( const_cast< eT* >(tmp.M.memptr()), tmp.M.n_elem, 1, false );
+  
+  return find(R, k, direction);
+  }
+
+
+
+template<typename T1, typename op_rel_type>
+arma_warn_unused
+inline
+uvec
+find(const mtOpCube<uword, T1, op_rel_type>& X, const uword k = 0, const char* direction = "first")
+  {
+  arma_extra_debug_sigprint();
+  
+  typedef typename T1::elem_type eT;
+  
+  const unwrap_cube<T1> tmp(X.m);
+  
+  const Mat<eT> R( const_cast< eT* >(tmp.M.memptr()), tmp.M.n_elem, 1, false );
+  
+  return find( mtOp<uword, Mat<eT>, op_rel_type>(R, X.aux), k, direction );
+  }
+
+
+
+template<typename T1, typename T2, typename glue_rel_type>
+arma_warn_unused
+inline
+uvec
+find(const mtGlueCube<uword, T1, T2, glue_rel_type>& X, const uword k = 0, const char* direction = "first")
+  {
+  arma_extra_debug_sigprint();
+  
+  typedef typename T1::elem_type eT1;
+  typedef typename T2::elem_type eT2;
+  
+  const unwrap_cube<T1> tmp1(X.A);
+  const unwrap_cube<T2> tmp2(X.B);
+  
+  arma_debug_assert_same_size( tmp1.M, tmp2.M, "relational operator" );
+  
+  const Mat<eT1> R1( const_cast< eT1* >(tmp1.M.memptr()), tmp1.M.n_elem, 1, false );
+  const Mat<eT2> R2( const_cast< eT2* >(tmp2.M.memptr()), tmp2.M.n_elem, 1, false );
+  
+  return find( mtGlue<uword, Mat<eT1>, Mat<eT2>, glue_rel_type>(R1, R2), k, direction );
+  }
+
+
+
+//
+
+
+
+template<typename T1>
+arma_warn_unused
+inline
+Col<uword>
+find(const SpBase<typename T1::elem_type,T1>& X, const uword k = 0)
+  {
+  arma_extra_debug_sigprint();
+  
+  const SpProxy<T1> P(X.get_ref());
+  
+  const uword n_rows = P.get_n_rows();
+  const uword n_nz   = P.get_n_nonzero();
+  
+  Mat<uword> tmp(n_nz, 1, arma_nozeros_indicator());
+  
+  uword* tmp_mem = tmp.memptr();
+  
+  typename SpProxy<T1>::const_iterator_type it = P.begin();
+  
+  for(uword i=0; i<n_nz; ++i)
+    {
+    const uword index = it.row() + it.col()*n_rows;
+    
+    tmp_mem[i] = index;
+    
+    ++it;
+    }
+  
+  Col<uword> out;
+  
+  const uword count = (k == 0) ? uword(n_nz) : uword( (std::min)(n_nz, k) );
+  
+  out.steal_mem_col(tmp, count);
+  
+  return out;
+  }
+
+
+
+template<typename T1>
+arma_warn_unused
+inline
+Col<uword>
+find(const SpBase<typename T1::elem_type,T1>& X, const uword k, const char* direction)
+  {
+  arma_extra_debug_sigprint();
+  
+  arma_ignore(X);
+  arma_ignore(k);
+  arma_ignore(direction);
+  
+  arma_check(true, "find(SpBase,k,direction): not implemented yet");  // TODO
+  
+  Col<uword> out;
+  
+  return out;
+  }
+
+
+
+//
+
+
+
+template<typename T1>
+arma_warn_unused
+inline
+typename
+enable_if2
+  <
+  is_arma_type<T1>::value,
+  const mtOp<uword, T1, op_find_finite>
+  >::result
+find_finite(const T1& X)
+  {
+  arma_extra_debug_sigprint();
+  
+  return mtOp<uword, T1, op_find_finite>(X);
+  }
+
+
+
+template<typename T1>
+arma_warn_unused
+inline
+typename
+enable_if2
+  <
+  is_arma_type<T1>::value,
+  const mtOp<uword, T1, op_find_nonfinite>
+  >::result
+find_nonfinite(const T1& X)
+  {
+  arma_extra_debug_sigprint();
+  
+  return mtOp<uword, T1, op_find_nonfinite>(X);
+  }
+
+
+
+template<typename T1>
+arma_warn_unused
+inline
+typename
+enable_if2
+  <
+  is_arma_type<T1>::value,
+  const mtOp<uword, T1, op_find_nan>
+  >::result
+find_nan(const T1& X)
+  {
+  arma_extra_debug_sigprint();
+  
+  return mtOp<uword, T1, op_find_nan>(X);
+  }
+
+
+
+//
+
+
+
+template<typename T1>
+arma_warn_unused
+inline
+uvec
+find_finite(const BaseCube<typename T1::elem_type,T1>& X)
+  {
+  arma_extra_debug_sigprint();
+  
+  typedef typename T1::elem_type eT;
+  
+  const unwrap_cube<T1> tmp(X.get_ref());
+  
+  const Mat<eT> R( const_cast< eT* >(tmp.M.memptr()), tmp.M.n_elem, 1, false );
+  
+  return find_finite(R);
+  }
+
+
+
+template<typename T1>
+arma_warn_unused
+inline
+uvec
+find_nonfinite(const BaseCube<typename T1::elem_type,T1>& X)
+  {
+  arma_extra_debug_sigprint();
+  
+  typedef typename T1::elem_type eT;
+  
+  const unwrap_cube<T1> tmp(X.get_ref());
+  
+  const Mat<eT> R( const_cast< eT* >(tmp.M.memptr()), tmp.M.n_elem, 1, false );
+  
+  return find_nonfinite(R);
+  }
+
+
+
+template<typename T1>
+arma_warn_unused
+inline
+uvec
+find_nan(const BaseCube<typename T1::elem_type,T1>& X)
+  {
+  arma_extra_debug_sigprint();
+  
+  typedef typename T1::elem_type eT;
+  
+  const unwrap_cube<T1> tmp(X.get_ref());
+  
+  const Mat<eT> R( const_cast< eT* >(tmp.M.memptr()), tmp.M.n_elem, 1, false );
+  
+  return find_nan(R);
+  }
+
+
+
+//
+
+
+
+template<typename T1>
+arma_warn_unused
+inline
+Col<uword>
+find_finite(const SpBase<typename T1::elem_type,T1>& X)
+  {
+  arma_extra_debug_sigprint();
+  
+  const SpProxy<T1> P(X.get_ref());
+  
+  const uword n_rows = P.get_n_rows();
+  const uword n_nz   = P.get_n_nonzero();
+  
+  Mat<uword> tmp(n_nz, 1, arma_nozeros_indicator());
+  
+  uword* tmp_mem = tmp.memptr();
+  
+  typename SpProxy<T1>::const_iterator_type it = P.begin();
+  
+  uword count = 0;
+  
+  for(uword i=0; i<n_nz; ++i)
+    {
+    if(arma_isfinite(*it))
+      {
+      const uword index = it.row() + it.col()*n_rows;
+      
+      tmp_mem[count] = index;
+      
+      ++count;
+      }
+    
+    ++it;
+    }
+  
+  Col<uword> out;
+  
+  if(count > 0)  { out.steal_mem_col(tmp, count); }
+  
+  return out;
+  }
+
+
+
+template<typename T1>
+arma_warn_unused
+inline
+Col<uword>
+find_nonfinite(const SpBase<typename T1::elem_type,T1>& X)
+  {
+  arma_extra_debug_sigprint();
+  
+  const SpProxy<T1> P(X.get_ref());
+  
+  const uword n_rows = P.get_n_rows();
+  const uword n_nz   = P.get_n_nonzero();
+  
+  Mat<uword> tmp(n_nz, 1, arma_nozeros_indicator());
+  
+  uword* tmp_mem = tmp.memptr();
+  
+  typename SpProxy<T1>::const_iterator_type it = P.begin();
+  
+  uword count = 0;
+  
+  for(uword i=0; i<n_nz; ++i)
+    {
+    if(arma_isfinite(*it) == false)
+      {
+      const uword index = it.row() + it.col()*n_rows;
+      
+      tmp_mem[count] = index;
+      
+      ++count;
+      }
+    
+    ++it;
+    }
+  
+  Col<uword> out;
+  
+  if(count > 0)  { out.steal_mem_col(tmp, count); }
+  
+  return out;
+  }
+
+
+
+template<typename T1>
+arma_warn_unused
+inline
+Col<uword>
+find_nan(const SpBase<typename T1::elem_type,T1>& X)
+  {
+  arma_extra_debug_sigprint();
+  
+  const SpProxy<T1> P(X.get_ref());
+  
+  const uword n_rows = P.get_n_rows();
+  const uword n_nz   = P.get_n_nonzero();
+  
+  Mat<uword> tmp(n_nz, 1, arma_nozeros_indicator());
+  
+  uword* tmp_mem = tmp.memptr();
+  
+  typename SpProxy<T1>::const_iterator_type it = P.begin();
+  
+  uword count = 0;
+  
+  for(uword i=0; i<n_nz; ++i)
+    {
+    if(arma_isnan(*it))
+      {
+      const uword index = it.row() + it.col()*n_rows;
+      
+      tmp_mem[count] = index;
+      
+      ++count;
+      }
+    
+    ++it;
+    }
+  
+  Col<uword> out;
+  
+  if(count > 0)  { out.steal_mem_col(tmp, count); }
+  
+  return out;
+  }
+
+
+
+//! @}