Single multiplication makes code ~10 slower in fastmod implementation

Here is a fastmod wrapper and two operators I’ve implemented for using it: class fastmod { public: [[using gnu: cold]] fastmod(uint64_t denominator) : denominator_(denominator) { M_ = static_cast<__uint128_t>(-1) / denominator + 1; } private: friend uint64_t operator/(uint64_t, fastmod const&); friend uint64_t operator%(uint64_t, fastmod const&); private: uint64_t denominator_; __uint128_t M_; }; [[using gnu: hot, always_inline]] inline…

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Hashcat doesn’t detect any device

I tried to install Nvidia drivers in Kali Linux through this tutorial: https://medium.com/@jamesmacwhite/installing-the-nvidia-drivers-in-kali-linux-cd3560258e24 and now everything is fine and GPU is in use but Hashcat doesn’t detect any device so I google and find some solutions like installing nvidia-cuda-toolkit or clinfo but I already installed these, there is any solution to this problem?

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Unable to execute groovy test files in Springboot application

I have created a sample SpringBoot application for writing unit-tests using Spock framework. Below are the files. Calculator.Java public class Calculator { @Autowired Addition addition; public int calculate(int a, int b, String choice) { return addition.add(a, b); } } I have created test-class using Junit as below, its working fine CalculatorTest.java @SpringBootTest public class CalculatorTest…

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