add unit tests for comparisons against nan
add unit tests for comparisons against nan
mcandre/factor,seckar/factor,cataska/factor,ceninan/factor,erg/factor,erg/factor,cataska/factor,mcandre/factor,littledan/Factor,erg/factor,ceninan/factor,seckar/factor,kingcons/factor,kingcons/factor,mcandre/factor,erg/factor,cataska/factor,erg/factor,mcandre/factor,kingcons/factor,ceninan/factor,littledan/Factor,mcandre/factor,kingcons/factor,seckar/factor,erg/factor,mcandre/factor,littledan/Factor,littledan/Factor,erg/factor,cataska/factor,ceninan/factor,mcandre/factor