D.E. Knuth's strlen

[CBFalconer]

Lew Pitcher wrote:
.... snip ...


As you (may) know, the 64 bit AMD x64 architecture is now several
years old... It seems you are not up to date what those processors
are concerned.

And the "AMD x64 architecture" is not what Knuth is talking about,
I believe. That architecture may have a 64 bit memory interface,
but is perfectly capable of addressing and accessing single 8 bit
bytes. He is worrying about systems where any memory access must
transfer a full 64 bits, and the next address (i.e. 1 greater) will
access the next 64 bits.

There are many machines that do not work like the x86.

 

[James Dow Allen]

Note that h2 is smaller than cursiz.

... the subtraction would require a further loop ...

Nonsense!

Sorry I didn't get back to you sooner on this, but
you seem to have little interest in this "bug report".
(I'll give you enough credit to assume you recognized
Mr. Naar's objection as, also, nonsense.)

Glad to help,
James Dow Allen

 

[CBFalconer]

Note that h2 is smaller than cursiz.


Nonsense!

Sorry I didn't get back to you sooner on this, but
you seem to have little interest in this "bug report".
(I'll give you enough credit to assume you recognized
Mr. Naar's objection as, also, nonsense.)

While you are right about this, you didn't deal with my attitude
that the code is adequately fast on most systems, and especially
that the original code is clear in its purpose. No fault in system
action can occur.