Constant and pass-by-reference

[Arjen Markus]

Op di 18 jun. 2019 om 23:32 schreef Tobias Burnus <burnus@net-b.de>:
>
>
> PS: I head that in the old days, such a program didn't crash but did
> modify the value of the constant. That would even work for:
> "call crash(5)" - after which "5" had the value 4. But that ways decades
> before my first encounter with Fortran.
>

Things have changed a lot since these very old days - I do remember
having to work around that particular problem on an IBM machine. To
illustrate how much things have changed: nowadays the IEEE rules for
floating-point numbers are (almost) universal, but their development
has taken a lot of time and effort. We now take that for granted, as
we do many other things, but these things did not appear
automatically.

Regards,

Arjen