test_diff()

void GSE2::tests::test_diff

(

)

Test the template metaprograms that apply and remove differences.

See also

GSE2::waveform::apply1stdiffT

GSE2::waveform::apply2nddiffT

GSE2::waveform::remove1stdiffT

GSE2::waveform::remove1stdiffT

Definition at line 77 of file gsexx_tests.cc.

Referenced by main().

{
  std::cout << std::endl;
  std::cout 
    << "Test the template metaprograms that apply and remove differences."
    << std::endl;
      
  // test values
  int values[] = { 1,3,5,7,3,-2,-4,6 }; 
  // number of test values
  const int nval=8;
  // declare differencers
  waveform::apply2nddiffT diff2nd;
  waveform::apply1stdiffT diff1st;
  // declare inverse operators
  waveform::remove2nddiffT rem2nd;
  waveform::remove1stdiffT rem1st;
  for (int i=0; i<nval; i++)
  {
    // apply 1st differences
    int v1st=diff1st(values[i]); 
    // apply 2nd differences
    int v2nd=diff2nd(values[i]); 
    // remove 1st differences
    int v1strem=rem1st(v1st); 
    // remove 2nd differences
    int v2ndrem=rem2nd(v2nd); 
    // print results
    std::cout.width(3); std::cout << i          << "   " << "value=";
    std::cout.width(3); std::cout << values[i]  << "   " << "1st diff=";
    std::cout.width(3); std::cout << v1st       << "   " << "1st rem=";
    std::cout.width(3); std::cout << v1strem    << "   " << "2nd diff=";
    std::cout.width(3); std::cout << v2nd       << "   " << "2nd rem=";
    std::cout.width(3); std::cout << v2ndrem    << " ";
    std::cout << std::endl;
  }
} // function test_diff

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