Compute Strings as Big integers

[scalion]

Hello all,

If you want manipulate big integers using string variable i wrote this library :

Library : IntString.lg32 (12.25 KB)

Source : IntString.G32 (12.66 KB)

Example how to use :

$Library "gfawinx"
$Library "UpdateRT"
UpdateRuntime      ' Patches GfaWin23.Ocx

$Library "IntString"

Global String A, B, C

FullW 1
AutoRedraw = True
FontName = "Lucida Console"
FontSize = 12

A = "200000000000000000000000000000000000000000000000000000000000000"
B = "123456789"
Print "A = " ; A
Print "  = " ; IS_FormatGame(A)
Print "  = " ; IS_FormatScientific(A, 5)
Print "B = " ; B
Print "  = " ; IS_FormatGame(B)
Print "  = " ; IS_FormatScientific(B, 5)
Print "A + B = "; IS_Add(A, B)
Print "A - B = "; IS_Sub(A, B)
Print "A * B = "; IS_Mul(A, B)
Print "A / B = "; IS_Div(A, B)
Print "A % B = "; IS_Mod(A, B)
Print "SQR(A)= "; IS_Sqr(A)
Print "SQR(B)= "; IS_Sqr(B)

Do
 Sleep
Loop Until Me Is Nothing

Have a good day !

[dragonjim]

Interesting. I look forward to testing it.

[(X)]

Merci Nic!

I have been toying around with a Star Trek game and found the universe is a big place!
I found I could not store locations for objects at cubic meter precision at the Galactic level, let alone Universe level.

Now, with your library, I can!

A quick check shows that a Double typed variables offers up to 15 significant digits, and Large type offers up to 19.

A typical Galactic coordinate can require a triplet of 24 significant digits to locate a cubic meter in the Galaxy.

For example:

    (123456789012345678901234, 123456789012345678901234, 123456789012345678901234)

From: GFAHelp

A Double occupies 64 bit = 8 bytes with at least 15 digits of precision.

    _minDbl (-1.79769313486232e+308)
    _maxDbl (1.79769313486232e+308)

Int64, Integer64 and Large are keywords for a 64-bits signed integer.

    _maxLarge = 9223372036854775807
    _minLarge = -9223372036854775808