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+// 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.map
+description: Consistent canonicalization of NaN values
+info: |
+ 22.2.3.19 %TypedArray%.prototype.map ( callbackfn [ , thisArg ] )
+
+ ...
+ 8. Repeat, while k < len
+ ...
+ d. Perform ? Set(A, Pk, mappedValue, true).
+ ...
+
+ IntegerIndexedElementSet ( O, index, value )
+
+ Assert: O is an Integer-Indexed exotic object.
+ If O.[[ContentType]] is BigInt, let numValue be ? ToBigInt(value).
+ Otherwise, let numValue be ? ToNumber(value).
+ Let buffer be O.[[ViewedArrayBuffer]].
+ If IsDetachedBuffer(buffer) is false and ! IsValidIntegerIndex(O, index) is true, then
+ Let offset be O.[[ByteOffset]].
+ Let arrayTypeName be the String value of O.[[TypedArrayName]].
+ Let elementSize be the Element Size value specified in Table 62 for arrayTypeName.
+ Let indexedPosition be (ℝ(index) × elementSize) + offset.
+ Let elementType be the Element Type value in Table 62 for arrayTypeName.
+ Perform SetValueInBuffer(buffer, indexedPosition, elementType, numValue, true, Unordered).
+ Return NormalCompletion(undefined).
+
+ 24.1.1.6 SetValueInBuffer ( arrayBuffer, byteIndex, type, value [ ,
+ isLittleEndian ] )
+
+ ...
+ 8. If type is "Float32", then
+ a. Set rawBytes to a List containing the 4 bytes that are the result
+ of converting value to IEEE 754-2008 binary32 format using “Round to
+ nearest, ties to even” rounding mode. If isLittleEndian is false, the
+ bytes are arranged in big endian order. Otherwise, the bytes are
+ arranged in little endian order. If value is NaN, rawValue may be set
+ to any implementation chosen IEEE 754-2008 binary64 format Not-a-Number
+ encoding. An implementation must always choose the same encoding for
+ each implementation distinguishable NaN value.
+ 9. Else, if type is "Float64", then
+ a. Set rawBytes to a List containing the 8 bytes that are the IEEE
+ 754-2008 binary64 format encoding of value. If isLittleEndian is false,
+ the bytes are arranged in big endian order. Otherwise, the bytes are
+ arranged in little endian order. If value is NaN, rawValue may be set
+ to any implementation chosen IEEE 754-2008 binary32 format Not-a-Number
+ encoding. An implementation must always choose the same encoding for
+ each implementation distinguishable NaN value.
+ ...
+includes: [nans.js, testTypedArray.js, compareArray.js]
+features: [TypedArray]
+---*/
+
+function body(FloatArray) {
+ var sample = new FloatArray(NaNs);
+ var sampleBytes, resultBytes;
+ var i = 0;
+
+ var result = sample.map(function() {
+ return NaNs[i++];
+ });
+
+ sampleBytes = new Uint8Array(sample.buffer);
+ resultBytes = new Uint8Array(result.buffer);
+
+ assert(compareArray(sampleBytes, resultBytes));
+}
+
+testWithTypedArrayConstructors(body, [Float32Array, Float64Array]);
+
+reportCompare(0, 0);