如何在Linux内核中划分两个64位数字？

#include<stdio.h>

int main() {
    unsigned long long num = 18446744073709551615ULL; // 最大的 64 位无符号整数
    unsigned long long div = 1000000000000000000ULL; // 除数
    unsigned long long quotient = num / div; // 商
    unsigned long long remainder = num % div; // 余数
    printf("Quotient: %llu\n", quotient);
    printf("Remainder: %llu\n", remainder);
    return 0;
}

#include<stdio.h>

int main() {
    unsigned long long num = 18446744073709551615ULL; // 最大的 64 位无符号整数
    unsigned long long div = 1000000000000000000ULL; // 除数
    unsigned long long quotient = num >> 33; // 商
    unsigned long long remainder = num & (div - 1); // 余数
    printf("Quotient: %llu\n", quotient);
    printf("Remainder: %llu\n", remainder);
    return 0;
}