mirror of https://github.com/bsnes-emu/bsnes.git
29 lines
504 B
C++
Executable File
29 lines
504 B
C++
Executable File
#ifndef NALL_RANDOM_HPP
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#define NALL_RANDOM_HPP
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namespace nall {
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//pseudo-random number generator
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inline unsigned prng() {
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static unsigned n = 0;
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return n = (n >> 1) ^ (((n & 1) - 1) & 0xedb88320);
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}
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struct random_lfsr {
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inline void seed(unsigned seed__) {
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seed_ = seed__;
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}
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inline unsigned operator()() {
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return seed_ = (seed_ >> 1) ^ (((seed_ & 1) - 1) & 0xedb88320);
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}
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random_lfsr() : seed_(0) {
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}
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private:
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unsigned seed_;
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};
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}
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#endif
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