blob: 1a933193ab19b9e2c2e9c90546bc6ac40353b122 [file] [log] [blame] [edit]
// Copyright 2014 The Flutter Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
import 'package:flutter/foundation.dart' show clampDouble;
import '../common.dart';
const int _kBatchSize = 100000;
const int _kNumIterations = 1000;
void main() {
assert(false,
"Don't run benchmarks in debug mode! Use 'flutter run --release'.");
final BenchmarkResultPrinter printer = BenchmarkResultPrinter();
final Stopwatch watch = Stopwatch();
{
final List<double> clampDoubleValues = <double>[];
for (int j = 0; j < _kNumIterations; ++j) {
double tally = 0;
watch.reset();
watch.start();
for (int i = 0; i < _kBatchSize; i += 1) {
tally += clampDouble(-1.0, 0.0, 1.0);
tally += clampDouble(2.0, 0.0, 1.0);
tally += clampDouble(0.0, 0.0, 1.0);
tally += clampDouble(double.nan, 0.0, 1.0);
}
watch.stop();
clampDoubleValues.add(watch.elapsedMicroseconds.toDouble() / _kBatchSize);
if (tally < 0.0) {
print("This shouldn't happen.");
}
}
printer.addResultStatistics(
description: 'clamp - clampDouble',
values: clampDoubleValues,
unit: 'us per iteration',
name: 'clamp_clampDouble',
);
}
{
final List<double> doubleClampValues = <double>[];
for (int j = 0; j < _kNumIterations; ++j) {
double tally = 0;
watch.reset();
watch.start();
for (int i = 0; i < _kBatchSize; i += 1) {
tally += -1.0.clamp(0.0, 1.0);
tally += 2.0.clamp(0.0, 1.0);
tally += 0.0.clamp(0.0, 1.0);
tally += double.nan.clamp(0.0, 1.0);
}
watch.stop();
doubleClampValues.add(watch.elapsedMicroseconds.toDouble() / _kBatchSize);
if (tally < 0.0) {
print("This shouldn't happen.");
}
}
printer.addResultStatistics(
description: 'clamp - Double.clamp',
values: doubleClampValues,
unit: 'us per iteration',
name: 'clamp_Double_clamp',
);
}
printer.printToStdout();
}