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// Provide a random number generator that is consistent across operating systems.

// It has an interface similar to srand() and rand().

#include "consistent_rand.hpp"

namespace ConsistentRand {

// A global variable representing the current state of the random number generator.

thread_local static uint32_t state = 1;

void srand(unsigned int seed) {

state = seed ? seed : 1;

}

int rand(void) {

state ^= state << 13;

state ^= state >> 17;

state ^= state << 5;

return static_cast<int>(state & 0x7FFFFFFF); // Return positive int

}

} // namespace ConsistentRand