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Thomas de Groot wrote:
> "Warp" <war### [at] tag povray org> schreef in bericht
> news:479c2f65@news.povray.org...
>> Not really. POV-Ray doesn't copy anything. When a macro call is
>> encountered
>> it jumps to the macro body and continues parsing there. When the macro has
>> been parsed, it returns to the origin of the jump.
>>
>
> ....reminds me of the good old 'subroutines' in Fortran...
Nah. Fortran just didn't guarantee you had a stack on the machine. And
many mainframes of the time didn't. You had "BAL" - Branch And Link,
which left the previous program counter in a register and branched to
the new address. Actually pushing that register onto a stack after was
usually-unnecessary overhead.
--
Darren New / San Diego, CA, USA (PST)
On what day did God create the body thetans?
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