Method GetMathFunctionNumber

Common/Misc/vtkFunctionParser.cxx:1465–1570

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//------------------------------------------------------------------------------
int vtkFunctionParser::GetMathFunctionNumber(int currentIndex)
{
  // For addition of any new math function, please update
  // function GetMathFunctionNumberByCheckingParenthesis()

  if (strncmp(&this->Function[currentIndex], "abs", 3) == 0)
  {
    return VTK_PARSER_ABSOLUTE_VALUE;
  }
  if (strncmp(&this->Function[currentIndex], "exp", 3) == 0)
  {
    return VTK_PARSER_EXPONENT;
  }
  if (strncmp(&this->Function[currentIndex], "ceil", 4) == 0)
  {
    return VTK_PARSER_CEILING;
  }
  if (strncmp(&this->Function[currentIndex], "floor", 5) == 0)
  {
    return VTK_PARSER_FLOOR;
  }
  if (strncmp(&this->Function[currentIndex], "ln", 2) == 0)
  {
    return VTK_PARSER_LOGARITHME;
  }
  if (strncmp(&this->Function[currentIndex], "log10", 5) == 0)
  {
    return VTK_PARSER_LOGARITHM10;
  }
  if (strncmp(&this->Function[currentIndex], "log", 3) == 0)
  {
    vtkErrorMacro("The use of log function is being deprecated. "
                  "Please use log10 or ln instead");
    return VTK_PARSER_LOGARITHM;
  }
  if (strncmp(&this->Function[currentIndex], "sqrt", 4) == 0)
  {
    return VTK_PARSER_SQUARE_ROOT;
  }
  if (strncmp(&this->Function[currentIndex], "sin", 3) == 0)
  {
    if (strncmp(&this->Function[currentIndex], "sinh", 4) == 0)
    {
      return VTK_PARSER_HYPERBOLIC_SINE;
    }
    return VTK_PARSER_SINE;
  }
  if (strncmp(&this->Function[currentIndex], "cos", 3) == 0)
  {
    if (strncmp(&this->Function[currentIndex], "cosh", 4) == 0)
    {
      return VTK_PARSER_HYPERBOLIC_COSINE;
    }
    return VTK_PARSER_COSINE;
  }
  if (strncmp(&this->Function[currentIndex], "tan", 3) == 0)
  {
    if (strncmp(&this->Function[currentIndex], "tanh", 4) == 0)