Re: [RFC] intdiv()

On 15 Jul 2014, at 03:31, Bishop Bettini <bishop@php.net> wrote: > I need some education. Can you elaborate on the specific situations where integer division > would be used without other functions from bcmath or gmp? > > I see in the RFC you mention seconds to hh:mm and index to rows/cols, but can you give some > actual "before" and "after" samples? Like this is how it would be done today > without intdiv, and here's how it would be done after? Sure. Say I have a number of seconds which I wish to split into years, days, hours, minutes and seconds, for example: $s = 1000000; $seconds = $s % 60; $minutes = intdiv($s, 60) % 60; $hours = intdiv($s, 3600) % 24; $days = intdiv($s, 3600 * 24) % 365; $years = intdiv($s, 3600 * 24 * 365); Currently, you’d have to cheat and use floating-point division: $x = 1000000; $seconds = $s % 60; $minutes = (int)($s / 60) % 60; $hours = (int)($s / 3600) % 24; $days = (int)($s / (3600 * 24)) % 365; $years = (int)($s / (3600 * 24 * 365)); The second one is a bit of a hack, really, but it would probably work most of the time since realistically nobody is using >53-bit time values at the moment (though people are using >32-bit values, so that 64-bit RFC can’t come soon enough given Y2K38). However, intdiv() is perhaps not the best way to implement it or the best syntax. -- Andrea Faulds http://ajf.me/