diff armadillo-3.900.4/include/armadillo_bits/op_cor_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

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/armadillo-3.900.4/include/armadillo_bits/op_cor_meat.hpp	Thu Jun 13 10:25:24 2013 +0100
@@ -0,0 +1,109 @@
+// Copyright (C) 2009-2011 NICTA (www.nicta.com.au)
+// Copyright (C) 2009-2011 Conrad Sanderson
+// Copyright (C) 2009-2010 Dimitrios Bouzas
+// 
+// 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_cor
+//! @{
+
+
+
+template<typename eT>
+inline
+void
+op_cor::direct_cor(Mat<eT>& out, const Mat<eT>& A, const uword norm_type)
+  {
+  arma_extra_debug_sigprint();
+  
+  if(A.is_empty())
+    {
+    out.reset();
+    return;
+    }
+  
+  if(A.is_vec())
+    {
+    out.set_size(1,1);
+    out[0] = eT(1);
+    }
+  else
+    {
+    const uword N = A.n_rows;
+    const eT norm_val = (norm_type == 0) ? ( (N > 1) ? eT(N-1) : eT(1) ) : eT(N);
+
+    const Row<eT> acc = sum(A);
+    const Row<eT> sd  = stddev(A);
+
+    out = (trans(A) * A);
+    out -= (trans(acc) * acc)/eT(N);
+    out /= norm_val;
+    out /= trans(sd) * sd;
+    }
+  }
+
+
+
+template<typename T>
+inline
+void
+op_cor::direct_cor(Mat< std::complex<T> >& out, const Mat< std::complex<T> >& A, const uword norm_type)
+  {
+  arma_extra_debug_sigprint();
+
+  typedef typename std::complex<T> eT;
+
+  if(A.is_empty())
+    {
+    out.reset();
+    return;
+    }
+  
+  if(A.is_vec())
+    {
+    out.set_size(1,1);
+    out[0] = eT(1);
+    }
+  else
+    {
+    const uword N = A.n_rows;
+    const eT norm_val = (norm_type == 0) ? ( (N > 1) ? eT(N-1) : eT(1) ) : eT(N);
+
+    const Row<eT> acc = sum(A);
+    const Row<T>  sd  = stddev(A);
+
+    out = trans(A) * A;               // out = strans(conj(A)) * A;
+    out -= (trans(acc) * acc)/eT(N);  // out -= (strans(conj(acc)) * acc)/eT(N);
+    out /= norm_val;
+
+    //out = out / (trans(sd) * sd);
+    out /= conv_to< Mat<eT> >::from(trans(sd) * sd);
+    }
+  }
+
+
+
+template<typename T1>
+inline
+void
+op_cor::apply(Mat<typename T1::elem_type>& out, const Op<T1,op_cor>& in)
+  {
+  arma_extra_debug_sigprint();
+  
+  typedef typename T1::elem_type eT;
+  
+  const unwrap_check<T1> tmp(in.m, out);
+  const Mat<eT>& A     = tmp.M;
+  
+  const uword norm_type = in.aux_uword_a;
+  
+  op_cor::direct_cor(out, A, norm_type);
+  }
+
+
+
+//! @}