ex_tand.nxc

This is an example of how to use the tand function.

// ex_tand.nxc
// Display values generated by the tand API call.
// This program runs indefinitely -- press gray button to exit.
// Reguires enhanced firmware 1.28 or later.

#define DELTA 22.5

// Angles from -67.5 degrees to almost 90.0 degres stepped by 22.5 degrees.
const float data[] =
{
   -3 * DELTA,
   -2 * DELTA,
   -DELTA,
   0.0,
   DELTA,
   2 * DELTA,
   3 * DELTA,
   4 * DELTA - 0.01
};

// Display a table of angles and their tangents. The angles are the ones 
// specified above.
task main()
{
   const int items = ArrayLen(data);
   for (int i = 0; i < items; ++i)
   {
      int screen_y = 56 - 8 * i;
      float angle = data[i];
      TextOut(0, screen_y, FormatNum("%5.1f", angle));
      TextOut(40, screen_y, FormatNum("%8.4f", tand(angle)));
   }
   while (true);
}