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From: David Thompson on 5 May 2008 00:10
On Tue, 22 Apr 2008 15:18:31 -0700 (PDT), Terence
<spamtrap(a)crayne.org> wrote:

> On Apr 22, 5:42�pm, Josef Moellers <spamt...(a)crayne.org> wrote:
>
> >.... But I recall that for one, Fortran doesn't support
> > recursion, and, as Robert pointed out, not all early machines had a
> > proper stack, parameters might be passed in a fixed location.
> >
> > The best thing to do would be to compile a Fortran program and look at
> > the object code.
> >

For the particular compiler(s?), and possibly options, of interest.

>
> Oh NO!, Fortran DOES support recursion!

Since 1990, but it's still not the default. Compilers legally _can_
still use single-copy (static) storage for routines not attributed
RECURSIVE. But since most CPUs nowadays support stack access at least
as efficient as static, there's rarely any longer a benefit to it.

Also variables declared with initialization are implicitly attributed
(also) SAVE, meaning single-copy even in a RECURSIVE routine. To have
'local' (per invocation) variables, you must use assignment instead.
This is a FAQ on c.l.fortran.

- formerly david.thompson1 || achar(64) || worldnet.att.net

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