+
+ ans <- .C("me_b", as.double(X), N, labels, as.integer(nni),
+ as.integer(spr), as.integer(tbr), edge1, edge2,
+ double(2*N - 3), character(N), PACKAGE = "ape")
+
+ labels <- substr(ans[[10]], 1, 6)
+ LABS <- attr(X, "Labels")
+ labels <- if (!is.null(LABS)) LABS[as.numeric(labels)]
+ else gsub("^ ", "", labels)
+ structure(list(edge = cbind(ans[[7]], ans[[8]]), edge.length = ans[[9]],
+ tip.label = labels, Nnode = N - 2L),
+ class = "phylo")
+}
+
+fastme.ols <- function(X, nni = TRUE)
+{
+ if (is.matrix(X)) X <- as.dist(X)
+ N <- as.integer(attr(X, "Size"))
+ labels <- sprintf("%6s", 1:N)
+ edge1 <- edge2 <- integer(2*N - 3)
+ ans <- .C("me_o", as.double(X), N, labels, as.integer(nni),