(05-07-2022, 09:07 AM)Coolman Wrote: :
the _ScreenMove _Middle command is supposed to center the window but if I don't put _Delay 0.2 before, sometimes it doesn't work. strange.

(08-15-2022, 04:22 PM)Pete Wrote: Nice! Thanks for speed testing.

I developed my string math routine as a way to never get caught in "computer" binary math errors. VAL() even fails when strings get too big, so I took that into account, too. I find this to be a great system for big number accounting, probably useful for chemistry molar calculations, but too slow for the kinds of massive numbers produced, as when calculating pi.

BTW: The pi algorithm I used is based on Leibniz's formula. There are other methods, but I'm not sure which is the fastest or most accurate. What's funny is the stone age method of putting a thread around a cylinder of known diameter is faster at getting to 3.14. I imagine at 15min to get that with my routine using Leibniz calculations, it would take several hours to get anything better than 3.14159.

Pete

(08-15-2022, 05:08 PM)Pete Wrote: I did come across some C/C++ code, but those languages uses a math lib, so the code is not nearly as involved. I find it interesting in that QB64 is a c/C++ translator. To that end, if my assumption that the c/C++ languages have a built in math lib to call, why didn't the developers take advantage of it?

As for FreeBASIC, I was there at its inception and everyone here knows I'm nott a fan, to put it mildly, but FB does have the advantage of compiling directly to binaries, where QB64 has to translate to c/c++ and then compile, so of course FB is going to be slower in that regard. My assumption is that once a "finished " project is in exe form, it becomes more a question of  the most efficient way the routine was coded making it the fastest, no matter what language it is coded in.

Pete

(08-15-2022, 08:25 PM)Pete Wrote: Errors with binary math meaning errors occur when we use computer binary math to represent base 10 output. So it's not the language, it's the principle. For instance, try running the following...

Code: (Select All)

DIM j AS SINGLE
FOR i = 1 TO 10
    j = 1 / 10 + j
    PRINT i, j
NEXT
PRINT

FOR i = 1 TO 100
    j = .01 * i
    PRINT i, j
    SLEEP
NEXT
DIM k AS DOUBLE
CLS
FOR i = 1 TO 10
    k = 1 / 10 + k
    PRINT i, k
NEXT
PRINT

FOR i = 1 TO 100
    k = .01 * i
    PRINT i, k
    SLEEP
NEXT

You will see inaccuracies in both DIM models. So the computer counts in base 2, whatever the language. The only way around it is to make a math library for the language to access.

Pete

(08-15-2022, 04:50 PM)mnrvovrfc Wrote:

(05-07-2022, 09:07 AM)Coolman Wrote: :
the _ScreenMove _Middle command is supposed to center the window but if I don't put _Delay 0.2 before, sometimes it doesn't work. strange.

Instead of "_DELAY" statement you might want to put:

DO: LOOP UNTIL _SCREENEXISTS

(08-31-2022, 09:30 PM)Coolman Wrote: note that the binaries created by this version are always seen as shared libraries under linux with the dolphin file browser. i think it's a forgotten option in the command line of the compilation.