Calling FORTRAN function from R issue?
On 06-03-2012, at 15:46, Berend Hasselman wrote:
Thus, perhaps strangely, if there is only a external double complex zdotc declaration in your subroutine, the compiler doesn't know that a call
The only 'strangely' thing is that is accepted: AFAICS is it not valid according to the link above.
Agree. The fortran 77 standard doesn't allow that syntax and I'm really surprised that no error is flagged.
Got it. See http://www.fortran.com/F77_std/rjcnf0001-sh-3.html#sh-3.1.6 Compiler ignores the blanks and external double complex zdotc becomes external doublecomplexzdotc And that is legal. And how long have I been using Fortran? I won't tell. Berend