Function init_angles

bitmap-plasma/app/src/main/cpp/plasma.cpp:99–105

static Fixed angle_sin_tab[ANGLE_2PI + 1];

static void init_angles(void) {
  int nn;
  for (nn = 0; nn < ANGLE_2PI + 1; nn++) {
    double radians = nn * M_PI / ANGLE_PI;
    angle_sin_tab[nn] = FIXED_FROM_FLOAT(sin(radians));
  }
}

static __inline__ Fixed angle_sin(Angle a) {
  return angle_sin_tab[(uint32_t)a & (ANGLE_2PI - 1)];