Re: computer language used to program Mars Lander

[CBFalconer <cbfalconer@yahoo.com>]

Jean-Pierre Rosen wrote:
> Nick Keighley a �crit :
>> Jean-Pierre Rosen <ro...@adalog.fr> wrote:
>>> Gautier a �crit :
>>
>> <snip>
>>
>>>> [this] comes from the time of non-optimizing compilers for PC's
>>>> - around 20 years ago. At that time a i++ was faster than a
>>>> i:= i + 1, sure. But it was long long time ago.
>>>>
>>>> Never heard of GCC ?...
>>>
>>> When I started working on a (Pascal) compiler, this optimization
>>> was the first one I introduced in the compiler, because it was
>>> the easiest one to do. And it was 30 years ago...
>>
>> Pascal has a ++ operator?
>
> No, I was refering to optimizing I := I+1 into a single "Inc"
> machine instruction.

ISO Standard Pascal has no 'inc' instruction.  Some non-standard
abortions do.  However those abortions also omit critical portions
of the standard, such as f^ and the put and get functions.  There
is more.

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