utils.h

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/*
* SPDX-License-Identifier: GPL-3.0-or-later
* © 2008-2024 San Diego State University Research Foundation (SDSURF).
* See LICENSE file or https://www.gnu.org/licenses/gpl-3.0.html for details. 
*/
 
/*
 * @file utils.h
 * @brief Helpers for sparse operations and MATLAB analogs
 * @date 2024/10/15
 *
 */
 
#pragma once
 
#ifndef UTILS_H
#define UTILS_H
 
#include <armadillo>
 
using Real = double;
using namespace arma;

class Utils {
public:
  
  static sp_mat spkron(const sp_mat &A, const sp_mat &B);

  static sp_mat spjoin_rows(const sp_mat &A, const sp_mat &B);
  
  static sp_mat spjoin_cols(const sp_mat &A, const sp_mat &B);

  static vec spsolve_eigen(const sp_mat &A, const vec &b);
  
  void meshgrid(const vec &x, const vec &y, mat &X, mat &Y);

  void meshgrid(const vec &x, const vec &y, const vec &z, cube &X, cube &Y,
                cube &Z);
};
 
#endif // UTILS_H