DragonFly On-Line Manual Pages

al_fixsin(3)                                                      al_fixsin(3)

NAME
       al_fixsin - Allegro 5 API

SYNOPSIS

              #include <allegro5/allegro.h>

              al_fixed al_fixsin(al_fixed x);

DESCRIPTION
       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);

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

Allegro reference manual                                          al_fixsin(3)