NANTEST checks several mathematical operations and a few
statistical functions for their correctness related to NaN's.
e.g. it checks norminv, normcdf, normpdf, sort, matrix division and multiplication.
see also: NANINSTTEST
REFERENCE(S):
[1] W. Kahan (1996) Lecture notes on the Status of "IEEE Standard 754 for
Binary Floating-point Arithmetic.
Package: nan