math/isPrime.cpp

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• Last update: 2021-03-07 15:45:48+09:00

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• test/isPrime.test.cpp

Code

#pragma once

template <class T> bool isPrime(T n) {
	if (n == 2) return true;
	if (n < 2 || n % 2 == 0) return false;
	for (T i = 3; i * i <= n; i += 2) {
		if (n % i == 0) return false;
	}
	return true;
}

#line 2 "math/isPrime.cpp"

template <class T> bool isPrime(T n) {
	if (n == 2) return true;
	if (n < 2 || n % 2 == 0) return false;
	for (T i = 3; i * i <= n; i += 2) {
		if (n % i == 0) return false;
	}
	return true;
}

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