Calculations Needing Big Integers....

[Jack]

Space_Ghost
what OS are you using?
if you are using Windows x64 then here's TerryRitchie's example converted to use LibTomath https://www.qb64phoenix.com/forum/showthread.php?tid=31

Code: (Select All)

_Title "Fibonacci"



$Console:Only

_Dest _Console



'$include: 'LibTomMath.bi'



Dim As mp_int fibIter

Dim As Long i, ok

Dim As Double t

t = Timer(.0001)

If mp_init(fibIter) <> 0 Then Print "failed to initialize"



For i = 1 To 5000 - 1

    fibonacci fibIter, i

    Print i, mp_str(fibIter, 10)

Next i

t = Timer(.0001) - t

Print "elapsed time - "; t; " seconds"

mp_clear fibIter



Sub fibonacci (f As mp_int, n As Long)

    Dim As Long i

    Dim As mp_int fib, fibPrev, fibPrevTemp

    If mp_init(fib) <> 0 Then Print "failed to initialize"

    If mp_init(fibPrev) <> 0 Then Print "failed to initialize"

    If mp_init(fibPrevTemp) <> 0 Then Print "failed to initialize"

    If n < 2 Then

        mp_set_i32 f, n

    Else

        mp_set_i32 fibPrev, 1

        mp_set_i32 fib, 1

        For i = 2 To n - 1

            ok = mp_copy(fib, fibPrevTemp)

            ok = mp_add&(fibPrev, fib, fib)

            ok = mp_copy(fibPrevTemp, fibPrev)

        Next i

        ok = mp_copy(fib, f)

        mp_clear fibPrevTemp

        mp_clear fibPrev

        mp_clear fib

    End If

End Sub



'$include: 'LibTomMath.bm'

  LibTomMath.bi (Size: 12.99 KB / Downloads: 39)

  LibTomMath.bm (Size: 636 bytes / Downloads: 29)

  libtommath.zip (Size: 59.37 KB / Downloads: 27)