[R] R: over/under flow

[William H. Asquith]

I am porting some FORTRAN to R in which an Inf triggers an if().  The 
trigger is infinite on exp().  What is the canonical R style of 
determining OVER when exp(OVER)== Inf?  The code structure that I am 
porting is best left intact--so I need to query R somehow to the value 
of OFL that causes exp(OFL) to equal Inf.

On my system,
exp(710) is first to equal Inf.

wa