psnorm: Skew Normal cumulative probability function
In abnormally-distributed/cvreg: Cross Validation and Robust Estimation Utilities

Skew Normal cumulative probability function

psnorm(
  q,
  mu = 0,
  sigma = 1,
  alpha = 0,
  xi = NULL,
  omega = NULL,
  lower.tail = TRUE,
  log.p = FALSE
)

`q`	vector of quantiles
`mu`	vector of location parameter values
`sigma`	vector of scale parameter values
`alpha`	vector of skewness parameter
`xi`	for internal use
`omega`	for internal use
`lower.tail`	if TRUE (default), probabilities are P[X <= x], otherwise, P[X > x]
`log.p`	if TRUE, probabilities p are given as log(p).