exec: float 'NaN' comparisons are incorrect

[solongordon]

A few of the float logic test fail for local-vec:

--- FAIL: TestLogic (0.61s)
    test_log_scope.go:77: test logs captured to: /var/folders/9q/5bgz_tb55tdfxrfz_bnp6p6r0000gn/T/logTestLogic230065997
    test_log_scope.go:58: use -show-logs to present logs inline
    --- FAIL: TestLogic/local-vec (0.00s)
        --- FAIL: TestLogic/local-vec/float (0.58s)
            logic.go:2338:

                testdata/logic_test/float:43: select f, f > 'NaN' from p@{FORCE_INDEX=primary} where f > 'NaN' ORDER BY f
                expected:
                    -Inf  true
                    -1    true
                    0     true
                    1     true
                    +Inf  true

                but found (query options: "") :


            logic.go:2338:

                testdata/logic_test/float:52: select f, f > 'NaN' from p@{FORCE_INDEX=p_f_key} where f > 'NaN' ORDER BY f
                expected:
                    -Inf  true
                    -1    true
                    0     true
                    1     true
                    +Inf  true

                but found (query options: "") :
                    -Inf  false
                    -1    false
                    0     false
                    1     false
                    +Inf  false

[solongordon]

This appears to affect sorting as well:

testdata/logic_test/order_by:312: SELECT x FROM nan ORDER BY x
                expected:
                    NaN
                    NaN
                    -1
                    1

                but found (query options: "") :
                    NaN
                    -1
                    1
                    NaN