`narrow_by_discretes.Rd`

When finding the inverse of the cdf at `p`

, and with the solution
between `low`

and `high`

, this function narrows this range based
on an intermediate discrete value, and zeroes-in on that
discrete value if it's the solution.

`narrow_by_discretes(distribution, p, low, high, discrete, direction)`

- distribution
A distribution having access to a cdf.

- p
Value of the cdf to calculate inverse at.

- low, high
Single numerics specifying the lower and upper bound to look between.

- discrete
Numeric value indicating a discrete point to possibly narrow the range by. Could be

`NA`

; could have length 0; could be outside of the range`c(low, high)`

.- direction
One of

`"left"`

for calculating left-inverse, or`"right"`

for calculating right-inverse.

The benefit of this step when inverting a cdf is to return
the exact discrete value if `p`

falls within its jump discontinuity.