round_div
pll->feedback_divider = round_div(n, d);
x = round_div(n, d);
x = round_div(n, d);
par->constants.xclk = round_div((2 * Nx * par->constants.ref_clk),
fb_div = round_div(rinfo->pll.ref_div*pll_output_freq,
hRatio = round_div(mode->xres * HORZ_STRETCH_RATIO_MAX,
vRatio = round_div(mode->yres * VERT_STRETCH_RATIO_MAX,
sclk = round_div((2 * Ns * xtal), (2 * M));
mclk = round_div((2 * Nm * xtal), (2 * M));