Re: Clair Grant on VMS code base

On 4/3/2025 2:15 PM, Simon Clubley wrote:

On 2025-04-01, Arne Vajhøj <arne@vajhoej.dk> wrote:

He looks at size 6.2 -> 7.2 -> 8.2 -> 9.2 and .mar vs .c 6.2 -> 9.2.
>
https://vmssoftware.com/resources/blog/2025-03-31-how-big-is-vms/

 How the hell does DCL have 30,000+ lines of code ? :-)
(Even allowing for the fact most of it is in Macro-32)

Just for fun I downloaded bash and counted. 117 KLOC.

Also, regarding those BLISS/Macro-32 figures across the various modules
in general, I wonder how much smaller the code would have been if it had
been written in C ?

C is a relative high LOC/FP language.
Most LOC/FP tables have C in the 100-125 range and macro-assembler
in the 200-250 range.
If we adjust for VAX instructions being more powerful/complex
than average ISA, add a random number and subtract wind speed I
will estimate the Macro-32 / C ratio to be around 1.5-1.75.
If you buy that then the DCL 33 KLOC would be 19-22 KLOC in C
to be compared with bash 117 KLOC.
Arne