R Under development (unstable) (2024-10-14 r87233 ucrt) -- "Unsuffered Consequences"
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> library(qwraps2)
> 
> set.seed(42)
> p <- runif(100)
> 
> stopifnot(all.equal(logit(p), log(p/(1-p))))
> stopifnot(all.equal(invlogit(log(p/(1-p))), p))
> 
> x <- seq(-3, 3, length = 1001)
> stopifnot(all.equal(invlogit(x), plogis(x)))
> 
> x <- seq(sqrt(.Machine$double.eps),  1 - sqrt(.Machine$double.eps), length = 1001)
> stopifnot(all.equal(logit(x), qlogis(x)))
> 
> proc.time()
   user  system elapsed 
   0.18    0.04    0.21