Baixar R for Windows 4.3.1 per a Windows

C-LEVEL FACILITIES
- The C-level API version of R's integrate(), Rdqags() in ‘Applic.h’, now returns the correct number of integrand evaluations neval, fixing PR#18515 reported and diagnosed by Stephen Wade.
- The C prototypes for LAPACK calls dspgv and dtptrs in ‘R_exts/Lapack.h’ had one too many and one too few character length arguments — but this has not caused any known issues. To get the corrected prototypes, include
#include <Rconfig.h> // for PR18534fixed
#ifdef PR18534fixed
# define usePR18534fix 1
#endif
#include <R_exts/Lapack.h>
in your C/C++ code (PR#18534).

INSTALLATION
- Many of the checks of esoteric Internet operations and those using unreliable external sites have been moved to a new target that is not run by default and primarily intended for the core developers. To run them use
cd tests; make test-Internet-dev

BUG FIXES
- .S3methods(), typically called from methods(), again marks methods from package base as visible.
Also, the visibility of non-base methods is again determined by the method's presence in search().
- tools::Rdiff() is now more robust against invalid strings, fixing installation tests on Windows without Rtools installed (PR#18530).
- Fix (new) bug in hcl.colors(2, *), by Achim Zeileis (PR#18523).
- head(., <illegal>) and tail(..) now produce more useful "Error in ...." error messages, fixing PR#18362.
- Package code syntax on Windows is checked in UTF-8 when UTF-8 is the native encoding.
- na.contiguous(x) now also returns the first run, when it is at the beginning and there is a later one of the same length; reported to R-devel, including a fix, by Georgi Boshnakov. Further, by default, it modifies only an existing attr(*,"tsp") but otherwise no longer sets one.
- chol(<not pos.def>, pivot = <T|F>) now gives a correct error or warning message (depending on pivot), thanks to Mikael Jagan's (PR#18541).