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From: =?UTF-8?Q?Arne_Vajh=C3=B8j?= <arne@vajhoej.dk>
Newsgroups: comp.os.vms
Subject: Re: Clair Grant on VMS code base
Date: Thu, 3 Apr 2025 14:33:16 -0400
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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