tests/stress/float64-array-nan.js

   1 function foo(o) {
   2     return o[0];
   3 }
   4
   5 noInline(foo);
   6
   7 function isBigEndian() {
   8     var word = new Int16Array(1);
   9     word[0] = 1;
  10     var bytes = new Int8Array(word.buffer);
  11     return !bytes[0];
  12 }
  13
  14 function test(a, b, x) {
  15     var intArray = new Int32Array(2);
  16     intArray[0] = a;
  17     intArray[1] = b;
  18     var floatArray = new Float64Array(intArray.buffer);
  19     var element = foo(floatArray);
  20     var result = element + 1;
  21     if (("" + result) != ("" + x))
  22         throw "Error: bad result for " + a + ", " + b + ": " + result + ", but expected: " + x + "; loaded " + element + " from the array";
  23 }
  24
  25 for (var i = 0; i < 100000; ++i)
  26     test(0, 0, 1);
  27
  28 if (isBigEndian()) {
  29     test(0xFFFF0000, 0, 0/0);
  30     test(0, 0xFFFF0000, 1);
  31 } else {
  32     test(0xFFFF0000, 0, 1);
  33     test(0, 0xFFFF0000, 0/0);
  34 }