sf
Returns the survival function value at integer k.
The survival function is the probability that the random variable is strictly greater than k, equal to 1 - cdf(k).
Return
the probability that a value is greater than k, in the range [0, 1].
Parameters
k
the integer point at which to evaluate the survival probability.
Returns the SF value at x, bridging to the integer sf overload.
Floors x to an integer via floor and delegates to sf. Returns Double.NaN if x is NaN.
Return
the probability that a value is greater than the floor of x.
Parameters
x
the point at which to evaluate the survival probability.