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#include "StdAfx.h"
#include "UnsyncedRNG.h"
#include <limits.h>
UnsyncedRNG::UnsyncedRNG() : randSeed(0)
{
}
void UnsyncedRNG::Seed(unsigned seed)
{
randSeed ^= seed;
}
unsigned UnsyncedRNG::operator()()
{
randSeed = (randSeed * 214013L + 2531011L);
return randSeed & 0x7FFF;
}
int UnsyncedRNG::RandInt()
{
randSeed = (randSeed * 214013L + 2531011L);
return randSeed & 0x7FFF;
}
float UnsyncedRNG::RandFloat()
{
randSeed = (randSeed * 214013L + 2531011L);
return float(randSeed & 0x7FFF) / 0x7FFF;
}
int UnsyncedRNG::operator()(int n)
{
return RandInt() * n / ((INT_MAX & 0x7FFF) + 1); // the range of RandInt() is limited to (INT_MAX & 0x7FFF)
}
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