https://github.com/cran/pracma
Tip revision: 9a644c12884525087aa1db3ecf57586b29fb17d8 authored by HwB on 06 June 2011, 00:00:00 UTC
version 0.5-3
version 0.5-3
Tip revision: 9a644c1
hypot.R
##
## h y p o t h . R
##
hypot <- function(x, y) {
if ((length(x) == 0 && is.numeric(y) && length(y) <= 1) ||
(length(y) == 0 && is.numeric(x) && length(x) <= 1))
return(c())
if (!is.numeric(x) && !is.complex(x) || !is.numeric(y) && !is.complex(y))
stop("Arguments 'x' and 'y' must be numeric or complex.")
if ((is.vector(x) && is.vector(y) && length(x) != length(y)) ||
(is.matrix(x) && is.matrix(y) && dim(x) != dim(y)) ||
(is.vector(x) && is.matrix(y)) || is.matrix(x) && is.vector(y))
stop("Arguments 'x' and 'y' must be of the same size.")
sqrt(abs(x)^2 + abs(y)^2)
}