pub fn exponential_buckets(
start: f64,
factor: f64,
count: usize
) -> Result<Vec<f64, Global>, Error>Expand description
Create count buckets, where the lowest bucket has an
upper bound of start and each following bucket’s upper bound is factor
times the previous bucket’s upper bound. The final +Inf bucket is not counted
and not included in the returned slice. The returned slice is meant to be
used for the Buckets field of HistogramOpts.
The function returns an error if count is zero, if start is zero or
negative, or if factor is less than or equal 1.