in chrony-candm/src/common.rs [241:257]
fn from(f: ChronyFloat) -> Self {
let ChronyFloat(x) = f;
let mut exp = (x >> FLOAT_COEF_BITS) as i32;
if exp >= 1 << (FLOAT_EXP_BITS - 1) {
exp -= 1 << FLOAT_EXP_BITS;
}
exp -= FLOAT_COEF_BITS as i32;
let mut coef = (x % (1 << FLOAT_COEF_BITS)) as i32;
if coef >= 1 << (FLOAT_COEF_BITS - 1) {
coef -= 1 << FLOAT_COEF_BITS
}
(coef as f64) * 2.0f64.powi(exp)
}