rust연습] pi(𝜋)파이 1억자리까지 계산 하기

 

 

code 시작

 

 

 

 1 use std::time::Instant;
 2 
 3 const N: u64 = 100_000_000;
 4 
 5 fn calculate_pi(n_terms: u64) -> f64 {
 6     let numerator = 4.0;
 7     let mut denominator = 1.0;
 8     let mut operation = 1.0;
 9     let mut pi = 0.0;
10     for _ in 0..n_terms {
11         pi += operation * (numerator / denominator);
12         denominator += 2.0;
13         operation *= -1.0;
14     }
15     pi
16 }
17 
18 fn main() {
19     let start = Instant::now();
20     let pi = calculate_pi(N);
21     let duration = start.elapsed();
22     println!("{pi}");
23     println!("Time elapsed : {:.2} seconds! ", duration.as_secs_f64());
24 }

 

 

 

use std::time::Instant;

const N: u64 = 100_000_000;

fn calculate_pi(n_terms: u64) -> f64 {
    let numerator = 4.0;
    let mut denominator = 1.0;
    let mut operation = 1.0;
    let mut pi = 0.0;
    for _ in 0..n_terms {
        pi += operation * (numerator / denominator);
        denominator += 2.0;
        operation *= -1.0;
    }
    pi
}

fn main() {
    let start = Instant::now();
    let pi = calculate_pi(N);
    let duration = start.elapsed();
    println!("{pi}");
    println!("Time elapsed : {:.2} seconds! ", duration.as_secs_f64());
}

 

 

 

Result:

 

 

 

LiveCoding

러스트Rust한글강의_제로코스트추상화중요성_이해zero cost abstractions#rust #abstractions

https://youtu.be/qAlVafe4_Bk

 

 

 

 

 

 

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