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author | Matt A. Tobin <mattatobin@localhost.localdomain> | 2018-02-02 04:16:08 -0500 |
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committer | Matt A. Tobin <mattatobin@localhost.localdomain> | 2018-02-02 04:16:08 -0500 |
commit | 5f8de423f190bbb79a62f804151bc24824fa32d8 (patch) | |
tree | 10027f336435511475e392454359edea8e25895d /js/src/jit-test/tests/basic/testTypedArrayPunning.js | |
parent | 49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff) | |
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Add m-esr52 at 52.6.0
Diffstat (limited to 'js/src/jit-test/tests/basic/testTypedArrayPunning.js')
-rw-r--r-- | js/src/jit-test/tests/basic/testTypedArrayPunning.js | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/basic/testTypedArrayPunning.js b/js/src/jit-test/tests/basic/testTypedArrayPunning.js new file mode 100644 index 000000000..59f6b744f --- /dev/null +++ b/js/src/jit-test/tests/basic/testTypedArrayPunning.js @@ -0,0 +1,42 @@ +function testNonCanonicalNan() +{ + const bytes = 128; + var buf = new ArrayBuffer(bytes); + + /* create an array of non-canonical double nans */ + var ui8arr = new Uint8Array(buf); + for (var i = 0; i < ui8arr.length; ++i) + ui8arr[i] = 0xff; + + var dblarr = new Float64Array(buf); + assertEq(dblarr.length, bytes / 8); + + /* ensure they are canonicalized */ + for (var i = 0; i < dblarr.length; ++i) { + var asstr = dblarr[i] + ""; + var asnum = dblarr[i] + 0.0; + assertEq(asstr, "NaN"); + assertEq(asnum, NaN); + } + + /* create an array of non-canonical float nans */ + for (var i = 0; i < ui8arr.length; i += 4) { + ui8arr[i+0] = 0xffff; + ui8arr[i+1] = 0xffff; + ui8arr[i+2] = 0xffff; + ui8arr[i+3] = 0xffff; + } + + var fltarr = new Float32Array(buf); + assertEq(fltarr.length, bytes / 4); + + /* ensure they are canonicalized */ + for (var i = 0; i < fltarr.length; ++i) { + var asstr = fltarr[i] + ""; + var asnum = fltarr[i] + 0.0; + assertEq(asstr, "NaN"); + assertEq(asnum, NaN); + } +} + +testNonCanonicalNan(); |