[fpc-pascal] Bit manipulation

[Steve Williams]

Florian Klaempfl wrote:

>Geno Roupsky wrote:
>  
>
>>it is as simple as this:
>>
>>function isset(value: dword; bit: byte): boolean;
>>begin
>>  result := value and (1 shl pred(bit)) <> 0;
>>end;
>>    
>>
>
>Adding inline doesn't hurt speedwise ;)
>  
>

It is also assuming that bit counting starts at 1.  I'd remove the 
'pred' and have bit counting start at zero.

-- 
Sly



This message and its attachments may contain legally privileged or confidential information. This message is intended for the use of the individual or entity to which it is addressed. If you are not the addressee indicated in this message, or the employee or agent responsible for delivering the message to the intended recipient, you may not copy or deliver this message or its attachments to anyone. Rather, you should permanently delete this message and its attachments and kindly notify the sender by reply e-mail. Any content of this message and its attachments, which does not relate to the official business of the sending company must be taken not to have been sent or endorsed by the sending company or any of its related entities. No warranty is made that the e-mail or attachment(s) are free from computer virus or other defect.