"pdfwei" <-
function(x,para) {
if(! are.parwei.valid(para)) return()
ZETA <- para$para[1]
B <- para$para[2]
D <- para$para[3]
K <- 1/D
A <- B/D
XI <- ZETA - B
gev.para <- list(type = 'gev', para = c(XI,A,K))
return(pdfgev(-x,gev.para))
}
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