inline

bench_arith.lua

@@ -0,0 +1,68 @@
+-- bench_arith.lua — arithmetic and number crunching benchmark (Lua)
+
+local iterations = 2000000
+local clock = os.clock
+
+local function bench_int_sum()
+  local s = 0
+  for i = 0, iterations - 1 do
+    s = s + i
+  end
+  return s
+end
+
+local function bench_int_mul_mod()
+  local s = 0
+  for i = 1, iterations - 1 do
+    s = s + (i * 7 % 1000)
+  end
+  return s
+end
+
+local function bench_float_arith()
+  local s = 0.5
+  for i = 1, iterations - 1 do
+    s = s + 1.0 / i
+  end
+  return s
+end
+
+local function bench_branch()
+  local fizz, buzz, fizzbuzz = 0, 0, 0
+  for i = 1, iterations do
+    if i % 15 == 0 then
+      fizzbuzz = fizzbuzz + 1
+    elseif i % 3 == 0 then
+      fizz = fizz + 1
+    elseif i % 5 == 0 then
+      buzz = buzz + 1
+    end
+  end
+  return fizz + buzz + fizzbuzz
+end
+
+local function bench_nested()
+  local s = 0
+  local outer, inner = 5000, 5000
+  for i = 0, outer - 1 do
+    for j = 0, inner - 1 do
+      s = s + 1
+    end
+  end
+  return s
+end
+
+local function run(name, fn)
+  local start = clock()
+  local result = fn()
+  local elapsed = (clock() - start) * 1000
+  print(string.format("  %s: %.2f ms  (result: %s)", name, elapsed, tostring(result)))
+end
+
+print("=== Arithmetic Benchmark ===")
+print(string.format("  iterations: %d", iterations))
+run("int_sum      ", bench_int_sum)
+run("int_mul_mod  ", bench_int_mul_mod)
+run("float_arith  ", bench_float_arith)
+run("branch       ", bench_branch)
+run("nested_loop  ", bench_nested)