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Every language has a random() function or something similar to generate a pseudo-random number. I am wondering what happens underneath to generate these numbers? I am not programming anything that makes this knowledge necessary, just trying to satisfy my own curiosity.
The entire first chapter of Donald Knuth’s seminal
work Seminumerical Algorithms is taken up with the subject of random number generation. I really don’t think an SO answer is going to come close to describing the issues involved. Read the book.