18 lines
340 B
Plaintext
18 lines
340 B
Plaintext
// 20210212 Rust programming solution
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fn nthRoot(n: f64, A: f64) -> f64 {
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let p = 1e-9_f64 ;
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let mut x0 = A / n ;
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loop {
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let mut x1 = ( (n-1.0) * x0 + A / f64::powf(x0, n-1.0) ) / n;
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if (x1-x0).abs() < (x0*p).abs() { return x1 };
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x0 = x1
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}
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}
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fn main() {
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println!("{}", nthRoot(3. , 8. ));
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}
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