Add fast operators to benchmarks.

CHANGELOG.md

@@ -21,6 +21,10 @@ Deprecated API
 New features
 ------------
 
+### Fast operators
+
+* A new option `Engine::fast_operators` is introduced that short-circuits all built-in operators of built-in types for higher speed. User overloads are ignored. For operator-heavy scripts, this may yield substantial speed-up's.
+
 ### Fallible type iterators
 
 * For very special needs, the ability to register fallible type iterators is added.
@@ -30,10 +34,6 @@ New features
 * `if`-expressions are allowed in `Engine::eval_expression` and `Engine::compile_expression` provided that both statement blocks each contain at most a single expression.
 * `switch`-expressions are allowed in `Engine::eval_expression` and `Engine::compile_expression` provided that match actions are expressions only.
 
-### Fast operators
-
-* A new option `Engine::fast_operators` is introduced that short-circuits all built-in operators of built-in types for higher speed. User overloads are ignored. For operator-heavy scripts, this may yield substantial speed-up's.
-
 Enhancements
 ------------
 

benches/eval_scope.rs

@@ -53,6 +53,23 @@ fn bench_eval_scope_longer(bench: &mut Bencher) {
     bench.iter(|| engine.run_ast_with_scope(&mut scope, &ast).unwrap());
 }
 
+#[bench]
+fn bench_eval_scope_longer_fast_ops(bench: &mut Bencher) {
+    let script = "(requests_made * requests_succeeded / 100) >= 90";
+
+    let mut engine = Engine::new();
+    engine.set_optimization_level(OptimizationLevel::None);
+    engine.set_fast_operators(true);
+
+    let mut scope = Scope::new();
+    scope.push("requests_made", 99 as INT);
+    scope.push("requests_succeeded", 90 as INT);
+
+    let ast = engine.compile_expression(script).unwrap();
+
+    bench.iter(|| engine.run_ast_with_scope(&mut scope, &ast).unwrap());
+}
+
 #[bench]
 fn bench_eval_scope_complex(bench: &mut Bencher) {
     let script = r#"

scripts/primes.rhai

@@ -2,7 +2,8 @@
 
 let now = timestamp();
 
-const MAX_NUMBER_TO_CHECK = 1_000_000;     // 9592 primes <= 100000
+const ANSWER = 78_498;
+const MAX_NUMBER_TO_CHECK = 1_000_000;
 
 let prime_mask = [];
 prime_mask.pad(MAX_NUMBER_TO_CHECK + 1, true);
@@ -27,6 +28,6 @@ for p in 2..=MAX_NUMBER_TO_CHECK {
 print(`Total ${total_primes_found} primes <= ${MAX_NUMBER_TO_CHECK}`);
 print(`Run time = ${now.elapsed} seconds.`);
 
-if total_primes_found != 78_498 {
+if total_primes_found != ANSWER {
-    print("The answer is WRONG! Should be 78,498!");
+    print(`The answer is WRONG! Should be ${ANSWER}!`);
 }