To expand on Dirk's answer, R relies on fairly close compliance to
IEC60559 (aka IEEE754) arithmetic in which 0/0 = NaN. As R is C/Fortran
program, this is a function of your C/Fortran compilers (it is most likely
an FPU setting controlled by the compiler than libc). Problems in this
area
Thank you very much, I did try your simple C program and it works
without any problem. I even tried some more sophisticated examples,
and they all print out nan instead of a segfault.
My computer has a Pentium 4 CPU, and I compiled R with the following
flags (these are just my default compiler
I just found out that I can do:
x - 0/0
in my R without any problem, it is only when I was trying to print
the value of x by simply type x and return, R crashed with a sigh of
segfault This is so wierd. I will try to report it to the Gentoo
forum and see if any other gentoo user has the
Xing Qiu [EMAIL PROTECTED] writes:
Thank you very much, I did try your simple C program and it works
without any problem. I even tried some more sophisticated examples,
and they all print out nan instead of a segfault.
My computer has a Pentium 4 CPU, and I compiled R with the following
Hi,
I noticed that when I was conducting some calculation involving
finding correlation coeficients, R stopped abnormally. So I did some
research, and find out that 0/0 was the culprit. For sure 0/0 is not
a valid expression, but R should give a warning, an error msg or NaN
instead of
On 18 August 2005 at 16:01, Xing Qiu wrote:
| Hi,
|
| I noticed that when I was conducting some calculation involving
| finding correlation coeficients, R stopped abnormally. So I did some
| research, and find out that 0/0 was the culprit. For sure 0/0 is not
| a valid expression, but R
