pub fn validate_cutoff(cutoff: f64) {
assert!(
cutoff.is_finite() && cutoff > 0.0 && cutoff <= 0.5,
"cutoff must be in (0, 0.5]"
);
}
pub fn validate_cutoff_f32(cutoff: f32) {
assert!(
cutoff.is_finite() && cutoff > 0.0 && cutoff <= 0.5,
"cutoff must be in (0, 0.5]"
);
}