R/math__hamonic.R

In feng-li/flutils: Feng Li's utility functions

#' Harmonic number
#'
#'
#' @title Harmonic number
#' @param n "non-negative numeric" Non integer is also allowed.
#' @return "numeric"
#' @author Feng Li, Department of Statistics, Stockholm University, Sweden.
#' @note Created: Wed May 30 10:51:32 CEST 2012;
#'       Current: Wed May 30 10:51:37 CEST 2012.
#' @export
harmonic <- function(n)
  {
    out <- digamma(n+1) - digamma(1)
    return(out)
  }