public static double PFD_get_error(ref PFD pfd_p, double dtime)
{
double next_clk, err0r;
if (pfd_p.phi_round > 0.0)
{
dtime = Math.Truncate(dtime * pfd_p.phi_round) / pfd_p.phi_round;
}
next_clk = Math.Truncate(dtime) + 1.0;
if (pfd_p.target_clk == 0.0)
{
pfd_p.target_clk = next_clk;
return(0.0);
}
err0r = pfd_p.target_clk - dtime;
if (err0r > 0)
{
pfd_p.target_clk = next_clk + 1.0;
}
else
{
pfd_p.target_clk = next_clk;
}
return(err0r);
}
public static void PFD_init(ref PFD pfd_p, double phi_round)
{
pfd_p.target_clk = 0.0;
pfd_p.phi_round = phi_round;
}
