Returns a (convergence, taper, approximation,...) tolerance.
Defaults to .Machine$double.eps^(1/level)
, typically about 1e-8
.
npsp.tolerance(level = 2, warn = TRUE)
numerical,
logical; If TRUE
(the default) a warning message is issued
when level < 1
.
Returns .Machine$double.eps^(1/level)
if level >= 1
,
in other case 1 - .Machine$double.eps
.