1 files changed, 37 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/TypedArray/prototype/set/bit-precision.js b/js/src/tests/test262/built-ins/TypedArray/prototype/set/bit-precision.js
new file mode 100644
index 0000000000..7893dca737
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+++ b/js/src/tests/test262/built-ins/TypedArray/prototype/set/bit-precision.js
@@ -0,0 +1,37 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-%typedarray%.prototype.set.2
+description: Preservation of bit-level encoding
+info: |
+  [...]
+  28. Else,
+      a. NOTE: If srcType and targetType are the same, the transfer must be
+         performed in a manner that preserves the bit-level encoding of the
+         source data.
+      b. Repeat, while targetByteIndex < limit
+         i. Let value be GetValueFromBuffer(srcBuffer, srcByteIndex, "Uint8").
+         ii. Perform SetValueInBuffer(targetBuffer, targetByteIndex, "Uint8",
+             value).
+         iii. Set srcByteIndex to srcByteIndex + 1.
+         iv. Set targetByteIndex to targetByteIndex + 1.
+includes: [nans.js, compareArray.js, testTypedArray.js]
+features: [TypedArray]
+---*/
+
+function body(FA) {
+  var source = new FA(NaNs);
+  var target = new FA(NaNs.length);
+  var sourceBytes, targetBytes;
+
+  target.set(source);
+
+  sourceBytes = new Uint8Array(source.buffer);
+  targetBytes = new Uint8Array(target.buffer);
+
+  assert(compareArray(sourceBytes, targetBytes))
+}
+
+testWithTypedArrayConstructors(body, [Float32Array, Float64Array]);
+
+reportCompare(0, 0);