s14ahc calculates an approximate value for
, where
. This is a variant of the
function (see also
s14abc), which avoids rounding problems for very large arguments by computing
with the Stirling approximation factored out.
For
, the value
is undefined;
s14ahc returns zero and exits with
NE_REAL_ARG_LE.
Background information to multithreading can be found in the
Multithreading documentation.
None.