C++ FunctionDefinition::setDisplayName方法代码示例

void PlotFunctionRegister::registerDefaultFunctions()
{
  FunctionDefinition *def = nullptr;
  QString category;

  // Core fundamentals
  category = "general";
  add(static_cast<double (*)(double)>(&std::abs), category, "abs", "Absolute value of x.");
  add(new FunctionClean(category));
  def = add(&clipFunc, category, "clip", "Clip x to to the range [min,max]. All values are clipped to this range.", 3);
  def->setDisplayName("clip(x,min,max)");
  def = add(&clipmaxFunc, category, "clipmax", "Clip x to a maximum value. Any value above max is displayed as min.", 2);
  def->setDisplayName("clipmax(x,max)");
  def = add(&clipminFunc, category, "clipmin", "Clip x to a minimum value. Any value below min is displayed as min.", 2);
  def->setDisplayName("clipmin(x,min)");
  add(&deltaFunc, category, "delta", "Delta from the last value of x.", 1);
  add(static_cast<double (*)(double)>(&std::exp), category, "exp", "Calculate e (2.718...) to the power of x.");
  add(&isNanFunc, category, "isnan", "Test if the input value is NaN. 1 if so, zero otherwise.", 1);
  add(&isInfFunc, category, "isinf", "Test if the input value is +/- infinity. 1 if so, zero otherwise.", 1);
  add(static_cast<double(*)(double)>(&std::log), category, "log", "Natural logarithm of x.");
  add(static_cast<double(*)(double)>(&std::log10), category, "log10", "Base 10 logarithm of x.");
  add(&maxFunc, category, "max", "Most recent maximum value of x.", 1);
  add(&minFunc, category, "min", "Most recent minimum value of x.", 1);
  add(static_cast<double (*)(double)>(&std::sqrt), category, "sqrt", "Sqrt of the value of x.");
  add(&nowFunc, category, "now", "Returns the current sample time.", 0);
  add(new FunctionUnwrap(category));

  category = "rounding";
  add(static_cast<double(*)(double)>(&std::ceil), category, "ceil", "Nearest integer not less than x.");
  add(static_cast<double(*)(double)>(&std::floor), category, "floor", "Nearest integer not greater than x.");
  add(static_cast<double(*)(double)>(&std::trunc), category, "trunc", "Nearest integer not greater in magnitude than x.");
  add(static_cast<double(*)(double)>(&std::round), category, "round", "Nearest integer rounding up (in magnitude) from halfway cases.");
  add(&fmodFunc, category, "fmod", "Floating point remainder of the division x/y.", 2);
  add(&remainderFunc, category, "remainder", "Integer remainder (closest) of the division x/y. Sign may differ from fmod.", 2);
  add(&signFunc, category, "sign", "Return the sign of x. -1 if negative, 1 otherwise.", 1);

  // Statistics
  category = "statistics";
  add(&abserrFunc, category, "abserr", "Absolute error between x and y.", 2);
  add(&avgFunc, category, "avg", "Running average value of x.", 1);
  add(new FunctionMAvg(category));
  add(&maxofFunc, category, "maxof", "Maximum value of any number of graphs.", 1, true);
  add(&minofFunc, category, "minof", "Minimum value of any number of graphs.", 1, true);
  add(&relerrFunc, category, "relerr", "Relative error between x and y.", 2);
  add(&totalFunc, category, "total", "Running sum of x.", 1);

  // Trigonometry
  category = "trigonometry";
  add(static_cast<double(*)(double)>(&std::acos), category, "acos", "Trigonometric arccos function of x");
  add(static_cast<double(*)(double)>(&std::asin), category, "asin", "Trigonometric arcsin function of x");
  add(static_cast<double(*)(double)>(&std::atan), category, "atan", "Trigonometric arctan function of x");
  def = add(&atan2Func, category, "atan2", "Trigonometric arctan of y/x with quadrant selection.", 2);
  if (def)
  {
    def->setDisplayName("atan2(y,x)");
  }
  add(static_cast<double(*)(double)>(&std::cos), category, "cos", "Trigonometric cos function of x");
  add(static_cast<double(*)(double)>(&std::sin), category, "sin", "Trigonometric sin function of x");
  add(static_cast<double(*)(double)>(&std::tan), category, "tan", "Trigonometric tan function of x");
  add(static_cast<double(*)(double)>(&std::cosh), category, "cosh", "Hyperbolic cos function of x");
  add(static_cast<double(*)(double)>(&std::sinh), category, "sinh", "Hyperbolic sin function of x");
  add(static_cast<double(*)(double)>(&std::tanh), category, "tanh", "Hyperbolic tan function of x");
  add(static_cast<double(*)(double)>(&std::acosh), category, "acosh", "Hyperbolic arccos function of x");
  add(static_cast<double(*)(double)>(&std::asinh), category, "asinh", "Hyperbolic arcsin function of x");
  add(static_cast<double(*)(double)>(&std::atanh), category, "atanh", "Hyperbolic arctan function of x");
  add(&piFunc, category, "pi", "Pi constant (3.141...).", 0);
}