Robert Nystrom
fc1b1ecc71
Change-Id: Idbcc965a27e9ffeedf5e0a1068b019de4193070f Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/127745 Commit-Queue: Bob Nystrom <rnystrom@google.com> Reviewed-by: Alexander Thomas <athom@google.com>
38 lines
1.1 KiB
Dart
38 lines
1.1 KiB
Dart
// Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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// Dart test optimization of modulo operator on Smi.
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// VMOptions=--optimization-counter-threshold=10 --no-use-osr
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import "package:expect/expect.dart";
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main() {
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for (int i = -30; i < 30; i++) {
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Expect.equals(i % 9, foo(i, 9));
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// Zero test is done outside the loop.
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if (i < 0) {
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Expect.equals(i ~/ -i, foo2(i));
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} else if (i > 0) {
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Expect.equals(i ~/ i, foo2(i));
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}
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}
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// We don't specify the exact exception type here, that is covered in
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// truncdiv_zero_test. The correct answer is IntegerDivisionByZeroException,
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// but the web platform has only one num type and can't distinguish between
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// int and double, so it throws UnsupportedError (the behaviour for double).
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Expect.throws(() => foo2(0));
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}
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foo(i, x) => i % x;
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foo2(i) {
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// Make sure x has a range computed.
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var x = 0;
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if (i < 0) {
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x = -i;
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} else {
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x = i;
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}
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return i ~/ x;
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}
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