comparison armadillo-3.900.4/include/armadillo_bits/SpValProxy_bones.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) 2011-2012 Ryan Curtin
+//
+// 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 SpValProxy
+//! @{
+
+/**
+ * Sparse value proxy class, meant to prevent 0s from being added to sparse
+ * matrices.  T1 should be either SpMat or SpSubview, and if it's not, bad news
+ * is probably coming.  This class only uses T1::add_element() and
+ * T1::delete_element().
+ */
+template<typename T1>
+class SpValProxy
+  {
+  public:
+
+  typedef typename T1::elem_type eT; // Convenience typedef
+
+  friend class SpMat<eT>;
+  friend class SpSubview<eT>;
+  
+  /**
+   * Create the sparse value proxy.
+   * Otherwise, pass a pointer to a reference of the value.
+   */
+  arma_inline SpValProxy(uword row, uword col, T1& in_parent, eT* in_val_ptr = NULL);
+  
+  //! For swapping operations.
+  arma_inline SpValProxy& operator=(const SpValProxy& rhs);
+  template<typename T2>
+  arma_inline SpValProxy& operator=(const SpValProxy<T2>& rhs);
+  
+  //! Overload all of the potential operators.
+  
+  //! First, the ones that could modify a value.
+  arma_inline SpValProxy& operator=(const eT rhs);
+  arma_inline SpValProxy& operator+=(const eT rhs);
+  arma_inline SpValProxy& operator-=(const eT rhs);
+  arma_inline SpValProxy& operator*=(const eT rhs);
+  arma_inline SpValProxy& operator/=(const eT rhs);
+  
+  arma_inline SpValProxy& operator++();
+  arma_inline SpValProxy& operator--();
+  arma_inline eT operator++(const int);
+  arma_inline eT operator--(const int);
+  
+  //! This will work for any other operations that do not modify a value.
+  arma_inline operator eT() const;
+  
+  
+  private:
+  
+  // Deletes the element if it is zero.  Does not check if val_ptr == NULL!
+  arma_inline arma_hot void check_zero();
+  
+  uword row;
+  uword col;
+  
+  eT* val_ptr;
+  
+  T1& parent; // We will call this object if we need to insert or delete an element.
+  };
+
+
+
+//! @}