------- Comment #7 from gdr at integrable-solutions dot net 2006-01-30 01:05 ------- Subject: Re: std::advance() isn't stable for floating point numbers
"pcarlini at suse dot de" <[EMAIL PROTECTED]> writes: | ------- Comment #5 from pcarlini at suse dot de 2006-01-30 00:45 ------- | (In reply to comment #4) | > | AFAICS, the standard is silent about this issue. I think the suggested | > | change is correct. | > | > I believe Martin Sebor filled a related PR, whereby we should have | > converted n to *some* integral type before proceeding... | | I was also under that impression. That issue, however, was about Size in algos, sorry; memory failing. | which, at least, is required to be convertible to an integral type. I don't | think we even have such *minimal* requirement here... What do you suggest? reading the standard specification let me under the impression that Distance is supposed to "related" to difference_type. For example the distance between the p before and after calling distance(p, n) is supposed to be n. So I would suggest conversion to the difference_type of the iterator as a momentary resolution. | Should the LWG discuss such kind of requirements for Distance too? Definitely. | In the meanwhile suspend? I have no strong opinions... I'm not sure the resolution would introduce an ABI breakage, so I would say let's do both; but I'm open to other alternatives. -- Gaby -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26020
