remove gcd/lcm

2 files changed, 0 insertions, 48 deletions

diff --git a/content/math/gcd-lcm.cpp b/content/math/gcd-lcm.cpp
deleted file mode 100644
index 1ee7ef5..0000000
--- a/content/math/gcd-lcm.cpp
+++ /dev/null
@@ -1,2 +0,0 @@
-ll gcd(ll a, ll b) { return b == 0 ? a : gcd(b, a % b); }
-ll lcm(ll a, ll b) { return a * (b / gcd(a, b)); }
diff --git a/test/math/gcd-lcm.cpp b/test/math/gcd-lcm.cpp
deleted file mode 100644
index 294095b..0000000
--- a/test/math/gcd-lcm.cpp
+++ /dev/null
@@ -1,46 +0,0 @@
-#include "../util.h"
-#include <math/gcd-lcm.cpp>
-
-void stress_test() {
-	if (::gcd(0, 0) != 0) cerr << "error: gcd(0, 0)" << FAIL;
-	if (::lcm(0, 0) != 0) cerr << "error: lcm(0, 0)" << FAIL;
-	ll queries = 0;
-	timer t;
-	for (int i = 0; i < 1'000'000; i++) {
-		ll a = Random::integer<ll>(0, 1'000'000'000);
-		ll b = 0;
-		{
-			ll got = ::gcd(a, b);
-			ll expected = std::gcd(a, b);
-			if (got != expected) cerr << "gcd(" << a << ", " << b << "), got: " << got << ", expected: " << expected << FAIL;
-		}
-		{
-			ll got = ::lcm(a, b);
-			ll expected = std::lcm(a, b);
-			if (got != expected) cerr << "lcm(" << a << ", " << b << "), got: " << got << ", expected: " << expected << FAIL;
-		}
-		b = Random::integer<ll>(0, 1'000'000'000);
-		{
-			t.start();
-			ll got = ::gcd(a, b);
-			t.stop();
-			ll expected = std::gcd(a, b);
-			if (got != expected) cerr << "gcd(" << a << ", " << b << "), got: " << got << ", expected: " << expected << FAIL;
-		}
-		{
-			t.start();
-			ll got = ::lcm(a, b);
-			t.stop();
-			ll expected = std::lcm(a, b);
-			if (got != expected) cerr << "lcm(" << a << ", " << b << "), got: " << got << ", expected: " << expected << FAIL;
-		}
-		queries++;
-	}
-	cerr << "tested random queries: " << queries << endl;
-	if (t.time > 750) cerr << "too slow: " << t.time << FAIL;
-	cerr << "tested performance: " << t.time << "ms" << endl;
-}
-
-int main() {
-	stress_test();
-}