Why is < faster than <=?(stackoverflow.com)

9 pointsby v33ra14 tahun yang lalu9 comments

stackoverflow.com

Why is < faster than <=?

http://stackoverflow.com/questions/12135518/why-is-faster-than

4 comments

zerostar0714 tahun yang lalu

What was that law that said that all titles that ended with a question mark can be answered "No"?

cnu14 tahun yang lalu

Betteridge's Law of Headlines - http://en.wikipedia.org/wiki/Betteridges_Law_of_Headlines

[deleted]14 tahun yang lalu

rootedbox14 tahun yang lalu

It may or may not be.. Its dependent on CPU, and Compiler.

ta1212114 tahun yang lalu

The top voted answer explains that the premise of the question and therefore the title of the submission is wrong.

acqq14 tahun yang lalu

So you missed the answer from ridiculous_fish there: on Power PC CPU's doing floating point comparisons the speeds are actually different. That's a perfect counterexample for your claim that "the premise is wrong."

Detailed explanation about reasons was given by Lukas.

ta1212114 tahun yang lalu

The Detailed Explanation given by Lucas concludes:

    So, on some machines, using a "less than" comparison
    might save one machine instruction. This was relevant in
    the era of sub-megahertz processor speed and 1:1 
    cpu-to-memory speed ratios, but is almost totally
    irrelevant today.

[deleted]14 tahun yang lalu

mrjbq714 tahun yang lalu

Why is this a frontpage HN post?

ta1212114 tahun yang lalu

I wish I knew, but I got downvoted for a constructive attempt at pointing it out.

carbuncle14 tahun yang lalu

"No"