al_fixsin (3alleg5)

• #include <allegro5/allegro.h>
  
  al_fixed al_fixsin(al_fixed x);
  
  

This function finds the sine of a value using a lookup table. The input value must be a fixed point binary angle.

Example:

•     al_fixed angle;
      int result;
  
      /* Set the binary angle to 90 degrees. */
      angle = al_itofix(64);
  
      /* The sine of 90 degrees is one. */
      result = al_fixtoi(al_fixsin(angle));
      assert(result == 1);
  
  

Returns the sine of a fixed point binary format angle. The return value will be in radians.