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// Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.
// Dart test program for testing the instanceof operation.
// @dart = 2.9
library intrinsified_methods_test;
import "package:expect/expect.dart";
import 'dart:math';
testIsNegative() {
Expect.isFalse((12.0).isNegative);
Expect.isTrue((-12.0).isNegative);
Expect.isFalse((double.nan).isNegative);
Expect.isFalse((0.0).isNegative);
Expect.isTrue((-0.0).isNegative);
Expect.isFalse((double.infinity).isNegative);
Expect.isTrue((double.negativeInfinity).isNegative);
}
testIsNaN() {
Expect.isFalse((1.0).isNaN);
Expect.isTrue((double.nan).isNaN);
}
testTrigonometric() {
Expect.approxEquals(1.0, sin(pi / 2.0), 0.0001);
Expect.approxEquals(1.0, cos(0), 0.0001);
Expect.approxEquals(1.0, cos(0.0), 0.0001);
}
num foo(int n) {
var x;
for (var i = 0; i <= n; ++i) {
Expect.equals(2.0, sqrt(4.0));
testIsNegative();
testIsNaN();
testTrigonometric();
}
return x;
}
void main() {
var m = foo(4000);
}