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extern crate time;
use time::Timespec;
pub fn get_time() -> Timespec {
use time::get_time;
get_time()
}
#[macro_export]
macro_rules! timeit_loops {
($loops:expr, $code:block) => ({
use timeit::get_time;
let n = $loops;
let start = get_time();
for _ in 0..n {
$code
}
let end = get_time();
let sec = (end.sec - start.sec) as f64 +
(end.nsec - start.nsec) as f64 / 1_000_000_000.0;
sec / (n as f64)
})
}
#[macro_export]
macro_rules! timeit {
($code:block) => ({
let mut n = 1;
let mut sec = timeit_loops!(n, $code);
let mut again = true;
let l = sec.log10().ceil() as isize;
if l < -5 {
n = 1000_000;
} else if l <= 0 {
n = 10isize.pow((-l) as u32);
} else {
again = false;
}
if again {
sec = timeit_loops!(n, $code);
}
let (mult, unit_str) = if sec > 1.0 {
(1.0, "s")
} else if sec > 0.001 {
(0.001, "ms")
} else if sec > 0.000_001 {
(0.000_001, "µs")
} else {
(0.000_000_001, "ns")
};
println!("{} loops: {} {}", n, sec / mult, unit_str);
})
}