Using the mpz_t type in a function

[Richard Marton]

Hello!

I wrote a void c++ function which uses the mpz_t type numbers and writes it's output to stdout.

void primkereso(int bitszam){

...

mpz_out_str(stdout, 10, prim);
}

The problem is i want to store the prim variable outside of the custom function. I have made and external mpz_t variable, and i want to mpz_set(d,primkereso(16));
Can i make this function return an mpz_t number?




I am trying to get the

[Bill Hart]

You can pass the mpz_t variable as a parameter to your function rather
than define it internally. The mpz_t type is set up to essentially
pass by reference, so any modifications you make inside the function
are also available outside it.

void primkereso(int bitszam, mpz_t prim){
...
mpz_out_str(stdout, 10, prim);
}

....

mpz_t prim;
mpz_init(prim);
primkereso(123, prim);

Does this answer your question?

Bill.

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[Richard Marton]

Yes, it helped. I modified the primkereso function to use two new references, and it works nicely.

Thank you for your time!