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