[R] Finding the first value without warning in a loop

Sat, 06 Dec 2008 23:41:11 -0800 

Dear R useRs,
with the following piece of code i try to find the first value which can be calculated without warnings 

`test` <- function(a)
{
 repeat
 {
   ## hide warnings
   suppressWarnings(log(a))

   if (exists("last.warning", envir = .GlobalEnv))
   {
     a <- a + 0.1
     ## clear existing warnings
     rm("last.warning", envir = .GlobalEnv)
   }

 if(a > 5 || !exists("last.warning", envir = .GlobalEnv))
   break
 }

 return(a)
}

if i run this with test(-3), i would expect a=0 as return value.
Is it also possible to hide warnings during my function, i guess i use
suppressWarnings in a wrong way here?

Thanks and best regards

Andreas

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