Nothing
# Computation of Poisson CUSUM ARLs
pois.cusum.arl <- function(mu, km, hm, m, i0=0, sided="upper", rando=FALSE, gamma=0, km2=0, hm2=0, m2=0, i02=0, gamma2=0) {
if ( mu < 0 ) stop("mu has to be positive")
if ( km < 1 ) stop("km has to be >= 1")
if ( hm < 1 ) stop("hm has to be >= 1")
if ( m < 1 ) stop("m has to be >= 1")
if ( !(i0 %in% 0:hm) ) stop("head start i0 has to be an integer in 0, 1, ..., hm")
ctyp <- pmatch(sided, c("upper", "lower", "two")) - 1
if ( is.na(ctyp) ) stop("invalid cusum type")
if ( rando ) {
if ( gamma < 0 | gamma > 1) stop("gamma has to be a probability value (0<=.<=1)")
}
if ( ctyp==2 ) {
if ( km2 < 1 ) stop("km2 has to be >= 1")
if ( hm2 < 1 ) stop("hm2 has to be >= 1")
if ( m2 < 1 ) stop("m2 has to be >= 1")
if ( !(i02 %in% 0:hm) ) stop("head start i02 has to be an integer in 0, 1, ..., hm")
if ( rando ) {
if ( gamma2 < 0 | gamma2 > 1) stop("gamma2 has to be a probability value (0<=.<=1)")
}
}
arl <- .C("ccusum_arl_be",
as.integer(ctyp), as.integer(rando), as.double(mu),
as.integer(km), as.integer(hm), as.integer(m), as.integer(i0), as.double(gamma),
as.integer(km2), as.integer(hm2), as.integer(m2), as.integer(i02), as.double(gamma2),
ans=double(length=1), PACKAGE="spc")$ans
names(arl) <- "arl"
arl
}
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