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// FastRandomTest.cpp
// Tests the randomness of cFastRandom
#include "Globals.h"
#include "FastRandom.h"
static void TestInts(void)
{
cFastRandom rnd;
int sum = 0;
const int BUCKETS = 8;
int Counts[BUCKETS];
memset(Counts, 0, sizeof(Counts));
const int ITER = 10000;
for (int i = 0; i < ITER; i++)
{
int v = rnd.NextInt(1000);
assert_test(v >= 0);
assert_test(v < 1000);
Counts[v % BUCKETS]++;
sum += v;
}
double avg = static_cast<double>(sum) / ITER;
printf("avg: %f\n", avg);
for (int i = 0; i < BUCKETS; i++)
{
printf(" bucket %d: %d\n", i, Counts[i]);
}
}
static void TestFloats(void)
{
cFastRandom rnd;
float sum = 0;
const int BUCKETS = 8;
int Counts[BUCKETS];
memset(Counts, 0, sizeof(Counts));
const int ITER = 10000;
for (int i = 0; i < ITER; i++)
{
float v = rnd.NextFloat(1000);
assert_test(v >= 0);
assert_test(v <= 1000);
Counts[static_cast<int>(v) % BUCKETS]++;
sum += v;
}
sum = sum / ITER;
printf("avg: %f\n", sum);
for (int i = 0; i < BUCKETS; i++)
{
printf(" bucket %d: %d\n", i, Counts[i]);
}
}
int main(void)
{
LOGD("FastRandom Test started");
LOGD("Testing ints");
TestInts();
LOGD("Testing floats");
TestFloats();
LOG("FastRandom test finished");
}
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