https://github.com/cran/pracma
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Tip revision: 708a2ad382a163d1eef5af0665e3ae2aad200ced authored by HwB on 21 March 2013, 00:00:00 UTC
version 1.4.5
Tip revision: 708a2ad
eig.R
###
### EIG.R  Eigenvalues
###


eig <- function(a) {
    if (length(a) == 0) return(matrix(0, nrow=0, ncol=0))
    if (length(a) == 1) return(a)
    if ((!is.numeric(a) && !is.complex(a)) || !is.matrix(a))
        stop("Argument 'a' must be a numeric or complex matrix.")
    if (nrow(a) != ncol(a))
        stop("Matrix 'a' must be square matrix.")

    eigen(a, only.values=TRUE)$values
}
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