Anton Tichawa wrote 7 lines
hi, andrew!
> I know little assembly and DO NOT want to waste my time learning more,
well, I LIKE ASSEMBLER, and i don't consider the time i spent with assembler
being wasted ;)
thanks.. and more power to you but... I have had a need to use a Assembly for speed only a hand full of times in the past.. so it is a waste given that I am likely to never again use what knowledge I might learn in the process..besides why use assembly when a.) I want cross CPU capabilities, b.) when there is no worthwhile difference in speed(for the stuff I do)? I don't do MMX, or the like, and don't write drivers or the like.. and I am not involved in anything like the RTL or FCL which might need it to supply the Cross-Platform/CPU stuff. but anyway..
two weeks ago i translated an fpc-procedure for simple graphic rendering to
assembly, and it worked great!
I tried adding {$ASMMode Intel} and the stuff compiled.
it's hard to answer your questions without knowing the codes. i can take a
look at it if you want to.
like I said proprietary.. don't know what all the license says about that sort of thing, else I would have posted the actual code to one of the smaller ones.
maybe you can try, instead, to rewrite these 3 procedures in pascal and see
if and how fast it works?
I would love to convert it to pascal or better yet throw it out the window..but I don't know what it does.. and cannot understand the asm behind it. oh well.. I will continue to work on the rest of the components and get everything working then come back to this and see if I can't rip the code out entirely.
Show quoted text 36 lines
ciao,
anton
On Wednesday 13 November 2002 19:07, you wrote:
> I am porting some low-level(proprietary) components to FPC. They in turn
> use a unit with some basic scaling routines, which are in assembly..
>
> but the routines in question will not compile.. so first.. for Delphi
> assembly compatibility do I have to change assembler mode.. like to AT&T
> Vs. Intel? 2nd do routines like these already exist in the FPC, so that
> I can simply get rid of them? The headers declare them(the routines
> which won't compile) as :
>
> { Scales up floating point Value into whole integer Value }
> function ScaleUp(Value: Extended; Places: integer): Integer;
>
> { Scales down whole integer Value into floating point Value }
> function ScaleDown(Value: Integer; Places: integer): Extended;
>
> { Checks double for valid values for 52-bit integer }
> function ValidInt52(Value: Double): Boolean;
>
>
> For the first two I do not understand why floor/ceil aren't being used
> anyway.. and for the 3rd I do not see what purpose it could possible
> serve. But since I don't use it directly and I am not familiar enough
> with the components internals, I cannot say for certain that it will
> work fine without them.
>
> Anybody help is appreciated.
>
> Andrew
>
>
Well thanks anyway!
Andrew
