bsnes/snesfilter/nall/random.hpp

21 lines
416 B
C++
Executable File

#ifndef NALL_RANDOM_HPP
#define NALL_RANDOM_HPP
namespace nall {
//pseudo-random number generator
inline unsigned prng() {
static unsigned n = 0;
return n = (n >> 1) ^ (((n & 1) - 1) & 0xedb88320);
}
struct random_cyclic {
unsigned seed;
inline unsigned operator()() {
return seed = (seed >> 1) ^ (((seed & 1) - 1) & 0xedb88320);
}
random_cyclic() : seed(0) {}
};
}
#endif