[R] Passing Inf from R to C using .C("myLibC"...
murdoch at stats.uwo.ca
Thu Apr 24 15:36:20 CEST 2008
On 4/24/2008 9:01 AM, Ardia David wrote:
> Dear all,
> How can I pass '-Inf' and 'Inf' values from R to C code using the
> function '.C(...)'. When running my code, I get an error since C does
> not recognize -Inf and Inf values. Of course, I could use instead a very
> low (or high) number, but I was wondering whether a more elegant
> solution exists. Thanks for your help.
C doesn't have any problem, but many C functions do, so .C by default
prevents you from doing this. However, if you know that it is safe, use
the NAOK arg to .C and special values will get through. (The name NAOK
may not suggest it also means Inf is okay, but the docs do clearly say
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