R help - Apr 2011 - R_qsort decreasing =T

Hello, 

i'm using  <R.h> & <Rmath.h>. 
What is the c equivalent to sort(x,deceasing=T)

i.e. to get sort(x) i type R_qsort(x, 1, n), where 
do i set the decreasing=T flag ?

More generally, is there a place where the 
functions in the R sources are documented ?


Best,

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On Apr 23, 2011, at 2:10 PM, kv wrote:
> Hello,
>
> i'm using  <R.h> & <Rmath.h>.
> What is the c equivalent to sort(x,deceasing=T)
>
> i.e. to get sort(x) i type R_qsort(x, 1, n), where
> do i set the decreasing=T flag ?
>
> More generally, is there a place where the
> functions in the R sources are documented ?

methods(sort)
sort.default # leads to
sort.int

So, if you look at the R code it appears that decreasing-requests are  
handled by first reversing the argument order before calling  
the .Internal code. Sometimes the code is documented in the R source.

-- 
David Winsemius, MD
West Hartford, CT