Added support for fp16 to test_isApprox, test_isMuchSmallerThan, and test_isApproxOrLessThan
Added support for fp16 to test_isApprox, test_isMuchSmallerThan, and test_isApproxOrLessThan

ritsu1228/eigen,pasuka/eigen,ROCmSoftwarePlatform/hipeigen,ritsu1228/eigen,ROCmSoftwarePlatform/hipeigen,ROCmSoftwarePlatform/hipeigen,pasuka/eigen,pasuka/eigen,ritsu1228/eigen,pasuka/eigen,pasuka/eigen,ritsu1228/eigen,ritsu1228/eigen,ROCmSoftwarePlatform/hipeigen