Add a floating test case for Arm64
Add a floating test case for Arm64

Signed-off-by: Bin Lu <41939a7239578d75c9fd5382ed581915f2bfc9f1@arm.com>

google/gvisor,google/gvisor,google/gvisor,google/gvisor,google/gvisor,google/gvisor,google/gvisor,google/gvisor