1 /* +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
2    Copyright (c) 2011-2021 The plumed team
3    (see the PEOPLE file at the root of the distribution for a list of names)
4 
5    See http://www.plumed.org for more information.
6 
7    This file is part of plumed, version 2.
8 
9    plumed is free software: you can redistribute it and/or modify
10    it under the terms of the GNU Lesser General Public License as published by
11    the Free Software Foundation, either version 3 of the License, or
12    (at your option) any later version.
13 
14    plumed is distributed in the hope that it will be useful,
15    but WITHOUT ANY WARRANTY; without even the implied warranty of
16    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
17    GNU Lesser General Public License for more details.
18 
19    You should have received a copy of the GNU Lesser General Public License
20    along with plumed.  If not, see <http://www.gnu.org/licenses/>.
21 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ */
22 #include "Vector.h"
23 #include "Exception.h"
24 #include <cmath>
25 
26 namespace PLMD {
27 
28 /// Small auxiliary class.
29 /// I use it to test a few things that I am scary of and could introduce bugs.
30 /// It checks at startup that Vector satifies some requirement so as to allow
31 /// accessing a vector of tensors as a 3 times longer array of doubles.
32 static class VectorChecks {
33 public:
VectorChecks()34   VectorChecks() {
35     if( sizeof(VectorGeneric<2>)==2*sizeof(double)
36         && sizeof(VectorGeneric<3>)==3*sizeof(double)
37         && sizeof(VectorGeneric<4>)==4*sizeof(double)) return;
38     plumed_merror("sizeof(VectorGeneric<x>)!=x*sizeof(double). PLUMED cannot work properly in these conditions.");
39   }
40 } checks;
41 
42 }
43 
44 
45 
46