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ProcessScaleInFld.cpp
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2 //
3 // File: ProcessScaleInFld.cpp
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9 // Copyright (c) 2006 Division of Applied Mathematics, Brown University (USA),
10 // Department of Aeronautics, Imperial College London (UK), and Scientific
11 // Computing and Imaging Institute, University of Utah (USA).
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31 //
32 // Description: Scale input fld
33 //
34 ////////////////////////////////////////////////////////////////////////////////
35 
36 #include <iostream>
37 #include <string>
38 using namespace std;
39 
40 #include "ProcessScaleInFld.h"
41 
44 
45 namespace Nektar
46 {
47 namespace FieldUtils
48 {
49 
50 ModuleKey ProcessScaleInFld::className =
52  ModuleKey(eProcessModule, "scaleinputfld"),
53  ProcessScaleInFld::create,
54  "rescale input field by a constant factor.");
55 
56 ProcessScaleInFld::ProcessScaleInFld(FieldSharedPtr f) : ProcessModule(f)
57 {
58  if ((f->m_inputfiles.count("fld") == 0) &&
59  (f->m_inputfiles.count("rst") == 0) &&
60  (f->m_inputfiles.count("chk") == 0))
61  {
62  cout << "A fld, chk or rst input file must be specified for the "
63  "scaleinputfld module"
64  << endl;
65  exit(3);
66  }
67 
68  m_config["scale"] = ConfigOption(false, "NotSet", "scale factor");
69  ASSERTL0(m_config["scale"].as<string>().compare("NotSet") != 0,
70  "scaleinputfld: Need to specify a sacle factor");
71 }
72 
74 {
75 }
76 
77 void ProcessScaleInFld::Process(po::variables_map &vm)
78 {
79  ASSERTL0(m_f->m_data.size() != 0, "No input data defined");
80 
81  string scalestr = m_config["scale"].as<string>();
82  NekDouble scale = boost::lexical_cast<NekDouble>(scalestr);
83 
84  if (m_f->m_verbose)
85  {
86  if (m_f->m_comm->TreatAsRankZero())
87  {
88  cout << "ProcessScaleInFld: Rescaling input fld by factor" << scale
89  << "..." << endl;
90  }
91  }
92 
93  for (int i = 0; i < m_f->m_data.size(); ++i)
94  {
95  int datalen = m_f->m_data[i].size();
96 
97  Vmath::Smul(datalen, scale, &(m_f->m_data[i][0]), 1,
98  &(m_f->m_data[i][0]), 1);
99  }
100 
101  if (m_f->m_exp.size()) // expansiosn are defined reload field
102  {
103  int nfields = m_f->m_fielddef[0]->m_fields.size();
104 
105  // import basic field again in case of rescaling
106  for (int j = 0; j < nfields; ++j)
107  {
108  for (int i = 0; i < m_f->m_data.size(); ++i)
109  {
110  m_f->m_exp[j]->ExtractDataToCoeffs(
111  m_f->m_fielddef[i], m_f->m_data[i],
112  m_f->m_fielddef[i]->m_fields[j],
113  m_f->m_exp[j]->UpdateCoeffs());
114  }
115  }
116  }
117 }
118 }
119 }
map< string, ConfigOption > m_config
List of configuration values.
#define ASSERTL0(condition, msg)
Definition: ErrorUtil.hpp:198
Represents a command-line configuration option.
STL namespace.
pair< ModuleType, string > ModuleKey
void Smul(int n, const T alpha, const T *x, const int incx, T *y, const int incy)
Scalar multiply y = alpha*y.
Definition: Vmath.cpp:213
virtual void Process(po::variables_map &vm)
Write mesh to output file.
boost::shared_ptr< Field > FieldSharedPtr
Definition: Field.hpp:740
double NekDouble
Abstract base class for processing modules.
ModuleFactory & GetModuleFactory()
FieldSharedPtr m_f
Field object.
tKey RegisterCreatorFunction(tKey idKey, CreatorFunction classCreator, tDescription pDesc="")
Register a class with the factory.
Definition: NekFactory.hpp:215