#[macro_export]
macro_rules! vspd {
($($nm:expr => $v:expr,)*) => {{
let mut samples = Vec::new();
$(samples.push(crate::vspd::Sample::new($nm, $v));)*
VSPD::new(samples)
}};
($($nm:expr =>$v:expr),*) => {{
let mut samples = Vec::new();
$(samples.push(crate::vspd::Sample::new($nm, $v));)*
VSPD::new(samples)
}};
}