#### Define those generics that we need, if they don't exist


if (!isGeneric("expand"))
    setGeneric("expand", function(x, ...) standardGeneric("expand"))

if (!isGeneric("tcrossprod"))
    setGeneric("tcrossprod", function(x) standardGeneric("tcrossprod"))

if (!isGeneric("isSymmetric"))
    setGeneric("isSymmetric", function(object, ...)
               standardGeneric("isSymmetric"))

if (!isGeneric("isNested"))
    setGeneric("isNested", function(object, ...) standardGeneric("isNested"))

if (!isGeneric("facmul"))
    setGeneric("facmul",
               function(x, factor, y, transpose, left, ...)
               standardGeneric("facmul"))

if (!isGeneric("lu"))
    setGeneric("lu", function(x, ...) standardGeneric("lu"))

if (!isGeneric("norm"))
    setGeneric("norm", function(x, type, ...) standardGeneric("norm"))

if (!isGeneric("rcond"))
    setGeneric("rcond", function(x, type, ...) standardGeneric("rcond"))

if (!isGeneric("Schur"))
    setGeneric("Schur", function(x, vectors, ...) standardGeneric("Schur"))

if (!isGeneric("unpack"))
    setGeneric("unpack", function(x, ...) standardGeneric("unpack"))

##- if (!isGeneric("%p%"))
##-     setGeneric("%p%", function(a, b) standardGeneric("%p%"))
##-
##- if (!isGeneric("coef<-"))
##-     setGeneric("coef<-", function(object, ..., value)
##-                standardGeneric("coef<-"))


## The generics pdFactor, pdMatrix, corFactor and corMatrix will be deprecated

# if (!isGeneric("pdFactor"))
#     setGeneric("pdFactor", function(object) standardGeneric("pdFactor"))

# if (!isGeneric("pdMatrix"))
#     setGeneric("pdMatrix", function(object) standardGeneric("pdMatrix"))

# if (!isGeneric("corFactor"))
#     ## extractor for transpose inverse square root factor of corr matrix
#     setGeneric("corFactor", function(object, ...) standardGeneric("corFactor"))

# if (!isGeneric("corMatrix"))
#     ## extractor for correlation matrix or the transpose inverse
#     ## square root matrix
#     setGeneric("corMatrix", function(object, ...) standardGeneric("corMatrix"))

# if (!isGeneric("isInitialized"))
#     setGeneric("isInitialized",
#                function(object) standardGeneric("isInitialized"),
#                valueClass = "logical")
#

# if (!isGeneric("matrix<-"))
#     setGeneric("matrix<-", function(object, value) standardGeneric("matrix<-"))

if (!isGeneric("expm"))
    setGeneric("expm", function(x) standardGeneric("expm"))