[R] R-1.2.1 on Linux/Alpha with ccc/fort

Yoriaki FUJIMORI fujimori at grafin.fujimori.cache.waseda.ac.jp
Tue Jan 30 18:52:37 CET 2001

Some time ago, I asked about the success story of compiling
R on Linux/Alpha with Compaq's ccc/fort.
Recently, I grabed R-1.2.1 from CRAN, and tried to compile it.
I got a loadable R.bin, but `make test' reported several
errors.  All of them seem to be a floating point number issue,
such as:
(1) In some cases, Alpha returns `-0.0' instead of `+0.0'.
(2) pgamma(Inf,1,xMax) is not evaluated as 1, but 0.6321206
(xMax is the machine maximum float in math.h.)

I tested several compile options of fort, but the situation does
not change.  I have not yet looked into source files.

Except these points, R compiled by Compaq's compiler kit for Linux/Alpha
seems to run properly on the Linux/Alpha platform.
Configure.in should be rewritten, though.
# To be exact, I did the compilation on FreeBSD/Alpha with Linux emulator.

just a junk tip.

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