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I'm working on a small client/server game that will eventually have it's own random terrain. To make it so that the server doesn't have to send the whole landscape data to the clients, I was planning to use a random number generator and just have the server send the seed to the clients so that they can generate the landscape using the same set of random numbers.
Ultimately, I'll probably end up writing my own random number generator or using a 3rd party one, but I was just curious about something. Do the ANSI standards for C dictate what sort of formula is used for rand()? Specifically, if I use the same seed for srand() on various ANSI C compilers, am I guaranteed to get the same sequence of numbers from rand()?
ansi standards DO NOT dictate how the function implements the internals. Random numbers sequences using any given seed will be different on Linux vs Windows, etc(most of the time). However, I could assume they could be the same if you are using GNU libraries on both systems.