WARNING: lookup(undef, ...) first argument is not a number, in file lookup-tests.scad, line 1
ECHO: undef
WARNING: lookup(undef, ...) first argument is not a number, in file lookup-tests.scad, line 2
ECHO: undef
WARNING: lookup(undef, ...) first argument is not a number, in file lookup-tests.scad, line 3
ECHO: undef
WARNING: lookup(undef, ...) first argument is not a number, in file lookup-tests.scad, line 4
ECHO: undef
ECHO: 0
ECHO: 0.5
ECHO: -55
ECHO: -55
ECHO: -54.4444
ECHO: -2.5
ECHO: 0
ECHO: 0.9
ECHO: 6.66667
ECHO: 333
ECHO: 333
