Calculations Needing Big Integers....

[Jack]

also for Windows x64 you can use pari https://www.qb64phoenix.com/forum/showth...hp?tid=536

Code: (Select All)

_Title "libpari-fib-demo"

$Console:Only

_Dest _Console



Declare Dynamic Library "libpari"

    Sub pari_init (ByVal parisize~&&, Byval maxprime~&&)

    Sub pari_close ()

    Sub pari_print_version ()

    Function setdefault~&& (s As String, v As String, Byval flag&&)

    Function strtoGENstr~&& (s As String)

    Function setrealprecision&& (ByVal n&&, prec&&)

    Function GENtostr$ (ByVal x~&&)

    Function geval~&& (ByVal x~&&)

    Sub outmat (ByVal x~&&)

    Function gp_input~&& ()

    Function stoi~&& (ByVal x&&)

    Function abscmpiu& (ByVal x~&&, Byval y As _Unsigned _Integer64)

    Function abscmpui& (ByVal x As _Unsigned _Integer64, Byval y~&&)

    Function absequaliu& (ByVal x~&&, Byval y As _Unsigned _Integer64)

    Function gequal& (ByVal x~&&, Byval y~&&)

    Function gcmp& (ByVal x~&&, Byval y~&&)

End Declare



Dim As _Unsigned _Integer64 a, b, c, d, e, f

Dim As String s1, s2, s3

Dim As _Integer64 flag, prec



pari_init 80000000, 500000

'pari_print_version

Print



s1 = "fibonacci(5000)" + Chr$(0)

a = strtoGENstr(s1) 'convert to GEN string

b = geval(a) 'eval the string in a

'outmat b

s3 = GENtostr(b)

Print "fibonacci(5000) = "; s3



pari_close