Move into version control

1 files changed, 232 insertions, 0 deletions

diff --git a/src/armadillo/include/armadillo_bits/Gen_meat.hpp b/src/armadillo/include/armadillo_bits/Gen_meat.hpp
new file mode 100644
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--- /dev/null
+++ b/src/armadillo/include/armadillo_bits/Gen_meat.hpp
@@ -0,0 +1,232 @@
+// 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 Gen
+//! @{
+
+
+
+template<typename T1, typename gen_type>
+arma_inline
+Gen<T1, gen_type>::Gen(const uword in_n_rows, const uword in_n_cols)
+  : n_rows(in_n_rows)
+  , n_cols(in_n_cols)
+  {
+  arma_extra_debug_sigprint();
+  }
+
+
+
+template<typename T1, typename gen_type>
+arma_inline
+Gen<T1, gen_type>::~Gen()
+  {
+  arma_extra_debug_sigprint();
+  }
+
+
+
+template<typename T1, typename gen_type>
+arma_inline
+typename T1::elem_type
+Gen<T1, gen_type>::operator[](const uword ii) const
+  {
+  typedef typename T1::elem_type eT;
+  
+       if(is_same_type<gen_type, gen_zeros>::yes)  { return eT(0);                                            }
+  else if(is_same_type<gen_type, gen_ones >::yes)  { return eT(1);                                            }
+  else if(is_same_type<gen_type, gen_eye  >::yes)  { return ((ii % n_rows) == (ii / n_rows)) ? eT(1) : eT(0); }
+  
+  return eT(0);  // prevent pedantic compiler warnings 
+  }
+
+
+
+template<typename T1, typename gen_type>
+arma_inline
+typename T1::elem_type
+Gen<T1, gen_type>::at(const uword r, const uword c) const
+  {
+  typedef typename T1::elem_type eT;
+  
+       if(is_same_type<gen_type, gen_zeros>::yes)  { return eT(0);                    }
+  else if(is_same_type<gen_type, gen_ones >::yes)  { return eT(1);                    }
+  else if(is_same_type<gen_type, gen_eye  >::yes)  { return (r == c) ? eT(1) : eT(0); }
+  
+  return eT(0);  // prevent pedantic compiler warnings 
+  }
+
+
+
+template<typename T1, typename gen_type>
+arma_inline
+typename T1::elem_type
+Gen<T1, gen_type>::at_alt(const uword ii) const
+  {
+  return operator[](ii);
+  }
+
+
+
+template<typename T1, typename gen_type>
+inline
+void
+Gen<T1, gen_type>::apply(Mat<typename T1::elem_type>& out) const
+  {
+  arma_extra_debug_sigprint();
+  
+  // NOTE: we're assuming that the matrix has already been set to the correct size;
+  // this is done by either the Mat contructor or operator=()
+  
+       if(is_same_type<gen_type, gen_zeros>::yes) { out.zeros(); }
+  else if(is_same_type<gen_type, gen_ones >::yes) { out.ones();  }
+  else if(is_same_type<gen_type, gen_eye  >::yes) { out.eye();   }
+  }
+
+
+
+template<typename T1, typename gen_type>
+inline
+void
+Gen<T1, gen_type>::apply_inplace_plus(Mat<typename T1::elem_type>& out) const
+  {
+  arma_extra_debug_sigprint();
+  
+  arma_debug_assert_same_size(out.n_rows, out.n_cols, n_rows, n_cols, "addition");
+  
+  typedef typename T1::elem_type eT;
+  
+  if(is_same_type<gen_type, gen_ones>::yes)
+    {
+    arrayops::inplace_plus(out.memptr(), eT(1), out.n_elem);
+    }
+  else
+  if(is_same_type<gen_type, gen_eye>::yes)
+    {
+    const uword N = (std::min)(n_rows, n_cols);
+    
+    for(uword ii=0; ii < N; ++ii)  { out.at(ii,ii) += eT(1); }
+    }
+  }
+
+
+
+
+template<typename T1, typename gen_type>
+inline
+void
+Gen<T1, gen_type>::apply_inplace_minus(Mat<typename T1::elem_type>& out) const
+  {
+  arma_extra_debug_sigprint();
+  
+  arma_debug_assert_same_size(out.n_rows, out.n_cols, n_rows, n_cols, "subtraction");
+  
+  typedef typename T1::elem_type eT;
+  
+  if(is_same_type<gen_type, gen_ones>::yes)
+    {
+    arrayops::inplace_minus(out.memptr(), eT(1), out.n_elem);
+    }
+  else
+  if(is_same_type<gen_type, gen_eye>::yes)
+    {
+    const uword N = (std::min)(n_rows, n_cols);
+    
+    for(uword ii=0; ii < N; ++ii)  { out.at(ii,ii) -= eT(1); }
+    }
+  }
+
+
+
+
+template<typename T1, typename gen_type>
+inline
+void
+Gen<T1, gen_type>::apply_inplace_schur(Mat<typename T1::elem_type>& out) const
+  {
+  arma_extra_debug_sigprint();
+  
+  arma_debug_assert_same_size(out.n_rows, out.n_cols, n_rows, n_cols, "element-wise multiplication");
+  
+  typedef typename T1::elem_type eT;
+  
+  if(is_same_type<gen_type, gen_zeros>::yes)
+    {
+    arrayops::inplace_mul(out.memptr(), eT(0), out.n_elem);
+    // NOTE: not using arrayops::fill_zeros(), as 'out' may have NaN elements
+    }
+  else
+  if(is_same_type<gen_type, gen_eye>::yes)
+    {
+    for(uword c=0; c < n_cols; ++c)
+    for(uword r=0; r < n_rows; ++r)
+      {
+      if(r != c)  { out.at(r,c) *= eT(0); }
+      }
+    }
+  }
+
+
+
+
+template<typename T1, typename gen_type>
+inline
+void
+Gen<T1, gen_type>::apply_inplace_div(Mat<typename T1::elem_type>& out) const
+  {
+  arma_extra_debug_sigprint();
+  
+  arma_debug_assert_same_size(out.n_rows, out.n_cols, n_rows, n_cols, "element-wise division");
+  
+  typedef typename T1::elem_type eT;
+  
+  if(is_same_type<gen_type, gen_zeros>::yes)
+    {
+    arrayops::inplace_div(out.memptr(), eT(0), out.n_elem);
+    }
+  else
+  if(is_same_type<gen_type, gen_eye>::yes)
+    {
+    for(uword c=0; c < n_cols; ++c)
+    for(uword r=0; r < n_rows; ++r)
+      {
+      if(r != c)  { out.at(r,c) /= eT(0); }
+      }
+    }
+  }
+
+
+
+template<typename T1, typename gen_type>
+inline
+void
+Gen<T1, gen_type>::apply(subview<typename T1::elem_type>& out) const
+  {
+  arma_extra_debug_sigprint();
+  
+  // NOTE: we're assuming that the submatrix has the same dimensions as the Gen object
+  // this is checked by subview::operator=()
+  
+       if(is_same_type<gen_type, gen_zeros>::yes) { out.zeros(); }
+  else if(is_same_type<gen_type, gen_ones >::yes) { out.ones();  }
+  else if(is_same_type<gen_type, gen_eye  >::yes) { out.eye();   }
+  }
+
+
+
+//! @}