Compute log (1 + X) accurately in the neighborhood of zero.
The function is only defined where X is greater than -1.
Accuracy: The result is a tight enclosure.
log1p (infsup (eps)) ⇒ ans ⊂ [2.2204e-16, 2.2205e-16]
See also: @infsup/exp, @infsup/log.
Package: interval