R Under development (unstable) (2023-10-22 r85388 ucrt) -- "Unsuffered Consequences"
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> # HEADER ####################################################
> # This is file spam/tests/demo_cholesky.R.                  #
> # It is part of the R package spam,                         #
> #  --> https://CRAN.R-project.org/package=spam              #
> #  --> https://CRAN.R-project.org/package=spam64            #
> #  --> https://git.math.uzh.ch/reinhard.furrer/spam         #
> # by Reinhard Furrer [aut, cre], Florian Gerber [aut],      #
> #    Roman Flury [aut], Daniel Gerber [ctb],                #
> #    Kaspar Moesinger [ctb]                                 #
> # HEADER END ################################################
> 
> 
> # We illustrate the Cholesky decompostion approaches
> options( echo=FALSE)
Spam version 2.10-0 (2023-10-23) is loaded.
Type 'help( Spam)' or 'demo( spam)' for a short introduction 
and overview of this package.
Help for individual functions is also obtained by adding the
suffix '.spam' to the function name, e.g. 'help( chol.spam)'.
> 
> proc.time()
   user  system elapsed 
   0.89    0.17    0.98