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| author | Keith Randall <khr@golang.org> | 2021-09-07 16:24:49 -0700 |
|---|---|---|
| committer | Keith Randall <khr@golang.org> | 2021-09-08 00:34:17 +0000 |
| commit | bab79dd3627a9c5d4b43ac3f3c2eba4a1f04b813 (patch) | |
| tree | 3ff463b90947b22e7a2c6de600c766cca8bfdf42 /src/reflect/all_test.go | |
| parent | 963218cc9c331931c5886f2eb7199e6d0c362e93 (diff) | |
| download | go-bab79dd3627a9c5d4b43ac3f3c2eba4a1f04b813.tar.gz go-bab79dd3627a9c5d4b43ac3f3c2eba4a1f04b813.zip | |
reflect: add back signaling NaN test
I was a little too agressive in CL 258957 (removing 387 support) in
removing a signaling NaN test that should probably still exist.
I should have just removed the 387 skip, not the entire test.
Change-Id: I97ca53f190eb0de00e43b96629b2cae677e7dacb
Reviewed-on: https://go-review.googlesource.com/c/go/+/348209
Trust: Keith Randall <khr@golang.org>
Run-TryBot: Keith Randall <khr@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Diffstat (limited to 'src/reflect/all_test.go')
| -rw-r--r-- | src/reflect/all_test.go | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/src/reflect/all_test.go b/src/reflect/all_test.go index eb3ddcb3e4..293d036f67 100644 --- a/src/reflect/all_test.go +++ b/src/reflect/all_test.go @@ -4431,6 +4431,14 @@ var gFloat32 float32 const snan uint32 = 0x7f800001 func TestConvertNaNs(t *testing.T) { + // Test to see if a store followed by a load of a signaling NaN + // maintains the signaling bit. (This used to fail on the 387 port.) + gFloat32 = math.Float32frombits(snan) + runtime.Gosched() // make sure we don't optimize the store/load away + if got := math.Float32bits(gFloat32); got != snan { + t.Errorf("store/load of sNaN not faithful, got %x want %x", got, snan) + } + // Test reflect's conversion between float32s. See issue 36400. type myFloat32 float32 x := V(myFloat32(math.Float32frombits(snan))) y := x.Convert(TypeOf(float32(0))) |