Nothing
digits <- function(x){
# calculate the digits of a number
if(x >= 1){pos <- 0
}else{
x <- as.character(x)
x <- substr(x,3,nchar(x))
xsplit <- substring(x, seq(1,nchar(x),1), seq(1,nchar(x),1))
pos <- which(xsplit != "0")
}
return(pos[1])
}
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