Nothing
###########################################################################/**
# @RdocFunction pseudoinverse
#
# @title "Calculates the pseudo inverse of a matrix"
#
# \description{
# @get "title".
# }
#
# @synopsis
#
# \arguments{
# \item{X}{A @numeric @matrix.}
# \item{...}{Not used.}
# }
#
# \value{
# Returns a @matrix.
# }
#
# \seealso{
# Internally @see "base::svd" is used.
# }
#
# @keyword "internal"
#*/###########################################################################
pseudoinverse <- function(X, ...) {
svd <- svd(X)
d <- svd$d
if(length(d) == 0L) {
array(0, dim=dim(X)[2:1])
} else {
svd$v %*% (1/d * t(svd$u))
}
} # pseudoinverse()
############################################################################
# HISTORY:
# 2009-03-24 [HB]
# o Added Rdoc comments.
# o Tidied up code. Minor minor speed up.
# 2008-xx-xx
# o Created.
############################################################################
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