comparison armadillo-3.900.4/include/armadillo_bits/fn_sprandu.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) 2012 Conrad Sanderson
+// 
+// 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 fn_sprandu
+//! @{
+
+
+
+//! Generate a sparse matrix with a randomly selected subset of the elements
+//! set to random values in the [0,1] interval (uniform distribution)
+template<typename obj_type>
+inline
+obj_type
+sprandu
+  (
+  const uword  n_rows,
+  const uword  n_cols,
+  const double density,
+  const typename arma_SpMat_SpCol_SpRow_only<obj_type>::result* junk = 0
+  )
+  {
+  arma_extra_debug_sigprint();
+  arma_ignore(junk);
+  
+  if(is_SpCol<obj_type>::value == true)
+    {
+    arma_debug_check( (n_cols != 1), "sprandu(): incompatible size" );
+    }
+  else
+  if(is_SpRow<obj_type>::value == true)
+    {
+    arma_debug_check( (n_rows != 1), "sprandu(): incompatible size" );
+    }
+  
+  obj_type out;
+  
+  out.sprandu(n_rows, n_cols, density);
+  
+  return out;
+  }
+
+
+
+inline
+sp_mat
+sprandu(const uword n_rows, const uword n_cols, const double density)
+  {
+  arma_extra_debug_sigprint();
+  
+  sp_mat out;
+  
+  out.sprandu(n_rows, n_cols, density);
+  
+  return out;
+  }
+
+
+
+//! Generate a sparse matrix with the non-zero values in the same locations as in the given sparse matrix X,
+//! with the non-zero values set to random values in the [0,1] interval (uniform distribution)
+template<typename T1>
+inline
+SpMat<typename T1::elem_type>
+sprandu(const SpBase<typename T1::elem_type, T1>& X)
+  {
+  arma_extra_debug_sigprint();
+  
+  typedef typename T1::elem_type eT;
+  
+  SpMat<eT> out( X.get_ref() );
+  
+  eop_aux_randu<eT>::fill( access::rwp(out.values), out.n_nonzero );
+  
+  return out;
+  }
+
+
+
+//! @}