Some
of the functions in the IMSL C Numerical Library allow the data
to contain missing values. These functions recognize as a missing
value the special value referred to as "Not a Number" or NaN. The
actual value is different on different computers, but it can be
obtained by reference to the functions imsl_f_machine or imsls_f_machine,
described in the "Utilities"
chapter.
The way missing
values are treated depends on the individual function and is described
in the documentation for the function.
