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// Based on tests/ion/typed-arrays-1.js, but with string indexes
function testInt8() {
var arr1 = new Int8Array(50);
var arr2 = new Uint8Array(50);
var arr3 = new Uint8ClampedArray(50);
for (var i=0; i<arr1.length; i++) {
arr1[i] = arr2[i] = arr3[i] = i * 8;
}
var res = 0;
for (var i=0; i<arr1.length; i++) {
res += arr1[i+""] + arr2[i+""] + arr3[i+""] + arr2["10".concat("")];
}
assertEq(res, 18334);
}
testInt8();
function testInt16() {
var arr1 = new Int16Array(70);
var arr2 = new Uint16Array(70);
for (var i=0; i<arr1.length; i++) {
arr1[i] = arr2[i] = i * 1000;
}
var res = 0;
for (var i=0; i<arr1.length; i++) {
res += arr1[i+""] + arr2[i+""] + arr2["1".concat("")] + arr1["3".concat("")];
}
assertEq(res, 2423024);
}
testInt16();
function testInt32() {
var arr = new Int32Array(60);
arr[0] = -50;
for (var i=1; i<arr.length; i++) {
arr[i] = arr[(i-1)+""] + arr["0".concat("")];
++arr[0];
}
assertEq(arr[(arr.length-1)+""], -1289);
}
testInt32();
function testUint32() {
function sum(arr) {
var res = 0;
for (var i=0; i<arr.length; i++) {
res += arr[i+""];
}
return res;
}
var arr = new Uint32Array(100);
for (var i=0; i<arr.length; i++) {
arr[i] = i;
}
// Compile sum() to read int32 values.
assertEq(sum(arr), 4950);
// Add a large uint32 so that the sum no longer fits in an
// int32. sum() should be recompiled to return a double.
arr[50] = 0xffffeeee;
assertEq(sum(arr), 4294967826);
}
testUint32();
function testFloat() {
var arr1 = new Float32Array(75);
var arr2 = new Float64Array(75);
arr1[0] = arr2[0] = Math.PI * 1234567.8;
for (var i=1; i<75; i++) {
arr1[i] = arr1[(i-1)+""] + arr1[0];
arr2[i] = arr2[(i-1)+""] + arr2[0];
}
assertEq(arr1["74".concat("")] > 290888255, true);
assertEq(arr1["74".concat("")] < 290888257, true);
assertEq(arr2["74".concat("")] > 290888184, true);
assertEq(arr2["74".concat("")] < 290888185, true);
}
testFloat();
function testCanonicalNaN() {
// NaN values have to be canonicalized. Otherwise, malicious scripts could
// construct arbitrary Value's (due to our NaN boxing Value representation).
var buf = new ArrayBuffer(16);
var uint32 = new Uint32Array(buf);
var f64 = new Float64Array(buf);
var f32 = new Float32Array(buf);
// Evil: write a JSVAL_TYPE_OBJECT type tag...
uint32[0] = 0xffffff87;
uint32[1] = 0xffffff87;
// Make sure this value is interpreted as a double.
for (var i=0; i<3; i++) {
assertEq(isNaN(f64["0".concat("")]), true);
assertEq(isNaN(f32["0".concat("")]), true);
}
}
testCanonicalNaN();
function testOutOfBounds() {
var buf = new ArrayBuffer(16);
var uint32 = new Uint32Array(buf);
uint32[0] = 0;
uint32[1] = 1;
for (var i=0; i<3; i++) {
assertEq(uint32["0".concat("")], 0);
assertEq(uint32["1".concat("")], 1);
assertEq(uint32["2".concat("")], 0);
assertEq(uint32["17".concat("")], undefined);
}
}
testOutOfBounds();
function testStrangeIndexes() {
var buf = new ArrayBuffer(16);
var uint32 = new Uint32Array(buf);
uint32[0] = 0;
uint32[1] = 1;
indexes = ["0", "1", "2", "3", "17", "3.5", "NaN", "undefined", "null"];
solutions = [0, 1, 0, 0, undefined, undefined, undefined, undefined, undefined];
for (var i=0; i<indexes.length; i++) {
assertEq(uint32[indexes[i]], solutions[i]);
}
}
testStrangeIndexes();
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