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A general description is here.
New function ‘dir.exists()’ in ‘base’ to test efficiently whether one or more paths exist and are directories.
‘dput()’ and friends gain a new control ‘"hexNumeric"’ which outputs double and complex quantities as binary fractions (see ‘sprintf("%a")’) to full precision (and no noise).
‘configure’ option ‘--with-internal-tzcode’ can now be used with
variable ‘rsharedir’.
‘configure’ option ‘--with-internal-tzcode’ can now be used with variable ‘rsharedir’.
‘pbeta(x, a, b, log = TRUE)’ no longer behaves discontinuously (in a small x-region) because of denormalized numbers. Also, ‘pbeta(1-1e-12, 1e30, 1.001, log=TRUE)’ now terminates “in real time”.