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Test Info:
- Manifest: toolkit/xre/test/mochitest.toml
<head>
<title>Floating-point exception handler test</title>
<script src="/tests/SimpleTest/SimpleTest.js"></script>
<body onload="runTest()">
<embed id="plugin1" type="application/x-test" width="400" height="400"></embed>
<script class="testbody" type="application/javascript">
SimpleTest.waitForExplicitFinish();
function doDiv(x, y) {
var z;
z = x / y;
for (let i = 0 + x; i < 1000; ++i)
z = y / x;
z = x / y;
return z;
}
function runTest() {
ok(isNaN(doDiv(0.0, 0.0)), "Undefined division-by-zero doesn't crash");
try {
document.getElementById("plugin1").enableFPExceptions();
} catch (e) {
ok(true, "No special code to set the FPU bit in the testplugin.");
SimpleTest.finish();
return;
}
ok(isNaN(doDiv(0.0, 0.0)), "Undefined division-by-zero doesn't crash again.");
SimpleTest.finish();
}
</script>