1 files changed, 42 insertions, 0 deletions
diff --git a/test/math/piLehmer.cpp b/test/math/piLehmer.cpp
new file mode 100644
index 0000000..d84466f
--- /dev/null
+++ b/test/math/piLehmer.cpp
@@ -0,0 +1,42 @@
+#include "../util.h"
+#include <math/primeSieve.cpp>
+namespace legendre {
+	#include <math/piLegendre.cpp>
+}
+namespace lehmer {
+	#include <math/piLehmer.cpp>
+}
+
+void stress_test() {
+	int queries = 0;
+	for (int i = 0; i < 1'000; i++) {
+		ll x = Random::integer<ll>(0, 1'000'000'000);
+		auto got = lehmer::pi(x);
+		auto expected = legendre::pi(x);
+		if (got != expected) cerr << "got: " << got << ", expected: " << expected << FAIL;
+		queries++;
+	}
+	cerr << "tested random queries: " << queries << endl;
+}
+
+void performance_test() {
+	timer t;
+	hash_t hash = 0;
+	t.start();
+	lehmer::init();
+	t.stop();
+	for (int i = 0; i < 1; i++)  {
+		ll x = Random::integer<ll>(0, 1000'000'000'000);
+		t.start();
+		hash += lehmer::pi(x);
+		t.stop();
+	}
+	if (t.time > 1500) cerr << "too slow: " << t.time << FAIL;
+	cerr << "tested performance: " << t.time << "ms (hash: " << hash << ")" << endl;
+}
+
+int main() {
+	performance_test();
+	stress_test();
+}
+