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### Coercion and Methods for Symmetric Packed Matrices
setAs("dspMatrix", "dsyMatrix",
function(from) .Call(dspMatrix_as_dsyMatrix, from))
dsp2sC <- function(from) as(.Call(dspMatrix_as_dsyMatrix, from), "dsCMatrix")
## setAs("dspMatrix", "dsCMatrix", dsp2sC)
setAs("dspMatrix", "CsparseMatrix", dsp2sC)
setAs("dspMatrix", "sparseMatrix", dsp2sC)
## dge <--> dsp via dsy
setAs("dgeMatrix", "dspMatrix",
function(from) as(as(from, "dsyMatrix"), "dspMatrix"))
## S3-matrix <--> dsp via dsy
setAs("dspMatrix", "matrix",
function(from) as(as(from, "dsyMatrix"), "matrix"))
setAs("matrix", "dspMatrix",
function(from) as(as(from, "dsyMatrix"), "dspMatrix"))
setMethod("rcond", signature(x = "dspMatrix", norm = "character"),
function(x, norm, ...)
.Call(dspMatrix_rcond, x, norm),
valueClass = "numeric")
setMethod("rcond", signature(x = "dspMatrix", norm = "missing"),
function(x, norm, ...)
.Call(dspMatrix_rcond, x, "O"),
valueClass = "numeric")
setMethod("BunchKaufman", signature(x = "dspMatrix"),
function(x) .Call(dspMatrix_trf, x))
## Should define multiplication from the right
setMethod("solve", signature(a = "dspMatrix", b = "missing"),
function(a, b, ...) .Call(dspMatrix_solve, a),
valueClass = "dspMatrix")
setMethod("solve", signature(a = "dspMatrix", b = "matrix"),
function(a, b, ...) .Call(dspMatrix_matrix_solve, a, b),
valueClass = "dgeMatrix")
setMethod("solve", signature(a = "dspMatrix", b = "ddenseMatrix"),
function(a, b, ...) .Call(dspMatrix_matrix_solve, a, b),
valueClass = "dgeMatrix")
##setMethod("solve", signature(a = "dspMatrix", b = "numeric"),
## function(a, b, ...)
## .Call(dspMatrix_matrix_solve, a, as.matrix(b)),
## valueClass = "dgeMatrix")
## No longer needed
## setMethod("solve", signature(a = "dspMatrix", b = "integer"),
## function(a, b, ...) {
## storage.mode(b) <- "double"
## .Call(dspMatrix_matrix_solve, a, as.matrix(b))
## }, valueClass = "dgeMatrix")
setMethod("norm", signature(x = "dspMatrix", type = "character"),
function(x, type, ...) .Call(dspMatrix_norm, x, type),
valueClass = "numeric")
setMethod("norm", signature(x = "dspMatrix", type = "missing"),
function(x, type, ...) .Call(dspMatrix_norm, x, "O"),
valueClass = "numeric")
setMethod("t", signature(x = "dspMatrix"),
function(x) as(t(as(x, "dsyMatrix")), "dspMatrix"),
valueClass = "dspMatrix")
setMethod("unpack", signature(x = "dspMatrix"),
function(x, ...) as(x, "dsyMatrix"),
valueClass = "dsyMatrix")
## The following allows as(*, "dppMatrix").
## However it *requires* that dppMatrix_chol() gives an error
## for non-positive-semi-definite matrices -- which it does since 2005-10-03
if(FALSE)## FIXME: This gives an error for singular pos.SEMI-def. matrices:
setIs("dspMatrix", "dppMatrix",
test = function(obj)
"try-error" != class(try(.Call(dppMatrix_chol, obj), TRUE)),
replace = function(obj, value) {
## copy all slots
for(n in slotNames(obj)) slot(obj, n) <- slot(value, n)
obj
})
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