Re: f77 on Sun vs. on HPRISC's

harrist@hsd.utc.com (harris) writes:
> In my case the problem was the HP compiler does not remember the values of
> local subroutine variables from one pass to the next.


Jan Vorbrueggen (jan@neuroinformatik.ruhr-uni-bochum.de) wrote:
> Why should it - the standard doesn't require it. (See John's comment.)


And even more importantly, every Fortran77 compiler out there usually has
an option to force subroutine variables to be static. For HP, I *think* the
option is "-K". Check the f77 man page on HP-UX to be sure..


Also, be aware that -K will usually *KILL* your optimization, so the better
alternative is to identify which variables you want to be static, and stick
them in some common block private to the subroutine.
--
Shankar Unni E-Mail: shankar@sgi.com
Silicon Graphics Inc. Phone: +1-415-390-2072
[I still prefer SAVE to a private common block, since that's specifically
what it's for. If your compiler has a broken save, you can get essentially
the same effect by initializing your variables in a DATA statement. Indeed,
if you plan to reuse values from one call to the next, I'd be pretty dubious
if you don't initialize them with DATA. -John]
--

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