[fpc-pascal] What about complex numbers?

[Jeppe Græsdal Johansen]

Den 06-10-2011 00:30, Carlos Avila skrev:
> Hello
> Is complex number arithmetic possible in FPC? Another post recommends 
> use unit so named ucomplex, but i can't find any detailed information 
> of this in the documentation. But, amazingly, i sucessfully probed 
> this small program:
>
> PROGRAM DUMMY;
>
> USES UCOMPLEX;
>
> VAR
>
> x,y, z, w: COMPLEX;
>
> BEGIN
> x := 8+i*7;
> y := 4-5*i;
> z := x+y;
> w := x*y
>
> END.
>
> This program compile and run right, but why? I need to know about 
> anything subroutines that works with complex numbers. It is posibble 
> to write math operations like FORTRAN?
>
> Thanks
The unit ucomplex is part of the rtl. It uses simple operator 
overloading to add a pretty useful complex type into your program. You 
can use it(pretty much) as any other type. It's not any special type, 
it's just a record where all the operators got overloaded

Try to open the source code for that unit, and you'll see how 
beautifully simple it is :)
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