1 /* Ergo, version 3.8, a program for linear scaling electronic structure
2  * calculations.
3  * Copyright (C) 2019 Elias Rudberg, Emanuel H. Rubensson, Pawel Salek,
4  * and Anastasia Kruchinina.
5  *
6  * This program is free software: you can redistribute it and/or modify
7  * it under the terms of the GNU General Public License as published by
8  * the Free Software Foundation, either version 3 of the License, or
9  * (at your option) any later version.
10  *
11  * This program is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14  * GNU General Public License for more details.
15  *
16  * You should have received a copy of the GNU General Public License
17  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
18  *
19  * Primary academic reference:
20  * Ergo: An open-source program for linear-scaling electronic structure
21  * calculations,
22  * Elias Rudberg, Emanuel H. Rubensson, Pawel Salek, and Anastasia
23  * Kruchinina,
24  * SoftwareX 7, 107 (2018),
25  * <http://dx.doi.org/10.1016/j.softx.2018.03.005>
26  *
27  * For further information about Ergo, see <http://www.ergoscf.org>.
28  */
29 
30 /** @file integrals_2el_layer.h
31 
32     @brief Functions for computing dense Coulomb and HF exchange
33     matrices.
34 
35     @author: Elias Rudberg <em>responsible</em>
36 */
37 
38 #ifndef INTEGRALS_2EL_LAYER_HEADER
39 #define INTEGRALS_2EL_LAYER_HEADER
40 
41 #include "integral_info.h"
42 #include "basisinfo.h"
43 #include "integrals_2el.h"
44 
45 int compute_2e_matrix_exchange(const BasisInfoStruct & basisInfo,
46 			       const IntegralInfo & integralInfo,
47 			       const JK::ExchWeights & CAM_params,
48 			       ergo_real* K,
49 			       ergo_real* dens,
50 			       ergo_real threshold);
51 
52 int compute_2e_matrix_coulomb(const BasisInfoStruct & basisInfo,
53 			      const IntegralInfo & integralInfo,
54 			      ergo_real* J,
55 			      ergo_real* dens,
56 			      const JK::Params& J_K_params);
57 
58 #endif
59