comparison armadillo-3.900.4/include/armadillo_bits/op_toeplitz_meat.hpp @ 49:1ec0e2823891

Switch to using subrepo copies of qm-dsp, nnls-chroma, vamp-plugin-sdk; update Armadillo version; assume build without external BLAS/LAPACK

+// Copyright (C) 2013 Conrad Sanderson
+// Copyright (C) 2013 NICTA (www.nicta.com.au)
+// 
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+
+//! \addtogroup op_toeplitz
+//! @{
+
+
+
+template<typename T1>
+inline
+void
+op_toeplitz::apply(Mat<typename T1::elem_type>& out, const Op<T1,op_toeplitz>& in)
+  {
+  arma_extra_debug_sigprint();
+  
+  typedef typename T1::elem_type eT;
+  
+  const unwrap_check<T1>  tmp(in.m, out);
+  const Mat<eT>& X      = tmp.M;
+  
+  arma_debug_check( ((X.is_vec() == false) && (X.is_empty() == false)), "toeplitz(): given object is not a vector" );
+  
+  const uword N     = X.n_elem;
+  const eT*   X_mem = X.memptr();
+  
+  out.set_size(N,N);
+  
+  for(uword col=0; col < N; ++col)
+    {
+    eT* col_mem = out.colptr(col);
+    
+    uword i;
+    
+    i = col;
+    for(uword row=0; row < col; ++row, --i) { col_mem[row] = X_mem[i]; }
+    
+    i = 0;
+    for(uword row=col; row < N; ++row, ++i) { col_mem[row] = X_mem[i]; }      
+    }
+  }
+
+
+
+template<typename T1>
+inline
+void
+op_toeplitz_c::apply(Mat<typename T1::elem_type>& out, const Op<T1,op_toeplitz_c>& in)
+  {
+  arma_extra_debug_sigprint();
+  
+  typedef typename T1::elem_type eT;
+  
+  const unwrap_check<T1>  tmp(in.m, out);
+  const Mat<eT>& X      = tmp.M;
+  
+  arma_debug_check( ((X.is_vec() == false) && (X.is_empty() == false)), "circ_toeplitz(): given object is not a vector" );
+  
+  const uword N     = X.n_elem;
+  const eT*   X_mem = X.memptr();
+  
+  out.set_size(N,N);
+  
+  if(X.is_rowvec() == true)
+    {
+    for(uword row=0; row < N; ++row)
+      {
+      uword i;
+      
+      i = row;
+      for(uword col=0; col < row; ++col, --i)  { out.at(row,col) = X_mem[N-i]; }
+      
+      i = 0;
+      for(uword col=row; col < N; ++col, ++i)  { out.at(row,col) = X_mem[i];   }
+      }
+    }
+  else
+    {
+    for(uword col=0; col < N; ++col)
+      {
+      eT* col_mem = out.colptr(col);
+      
+      uword i;
+      
+      i = col;
+      for(uword row=0; row < col; ++row, --i)  { col_mem[row] = X_mem[N-i]; }
+      
+      i = 0;
+      for(uword row=col; row < N; ++row, ++i)  { col_mem[row] = X_mem[i];   }
+      }
+    }
+  }
+
+
+
+//! @}