int ifloor(double d)

static int ifloor(double d)

double _reflect(double p, double c)

static double _reflect(double p, double c)

    accx *= signx[quadrant];
    accy *= signy[quadrant];

    accx = 0.5 + signx[quadrant] * (accx - 0.5);
    accy = 0.5 + signy[quadrant] * (accy - 0.5);

int _imbalance(const std::vector<coord_def>& ray)

static int _imbalance(const std::vector<coord_def>& ray)