sumDexp: Sum log-likelihoods of i.i.d. exponential.
Description
This is an internal function that is only exposed on the public API for unit testing purposes.
Usage
sumDexp(x, rate)
Arguments
x
Vector of i.i.d. exponential random varibles
rate
parameter of the exponential distribution
Value
log-likelihood of x
Details
The sum of the log-likelihoods (log of the product of the likelihoods)
for independent, identically-distributed, exponential random variables.
Note: this Rcpp function is thread-safe, unlike the equivalent alternatives.