[PHP-DEV] Re: [Zend Engine 2] Right/Left Shift Zero Fill operator From: Alexander Wirtz (wirtz <email protected>)
Date: 09/10/01

Hi Jeroen,

to give a little bit background, as a student of computersciences I happen
to work with bitshift not as a means of having a "quick" multiplication or
division, but as using it to "manipulate" bit-patterns.
The distinction between signed and unsigned rightshift is nothing strange,
obscure or redundant, but is implemented down to the machine-language
itsself (dependent on cpu-architecture).
So this is no "bad operator", but one of the most crucial operators on
bit-patterns. I don't want to sound arrogant (saying this is almost always a
sure sign, that it will ;-) ) but maybe you should inform yourself the next
time why other languages have this operator implemented.
Disabling signed shifting will force me to turn back to perl, as I use this
feature for quick hacking certain scripts I use at the University (and that
would be a very cruel thing to do :o) ) - besides, it would disregard the
"holy BC"...

Cheers & flames on (constructive comments are welcome),

Alexander 

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| Alexander Wirtz           | eMail: wirtz <email protected>              |
| web <email protected> GmbH            |     "Accidents, Emergency, Ambulance"    |

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