New function mpz_init_setbit

[marco.bodrato at tutanota.com]

Ciao Torbjörn,
25 giu 2026, 16:18 da tg at gmplib.org:

> marco.bodrato at tutanota.com writes:
>
>  Do you mind if I add a new function?
>
>  Here is its implementation:
>
>  /* mpz_init_setbit(integer, val) -- Initialize and assign INTEGER with 2^VAL. */
>  void
>  mpz_init_setbit (mpz_ptr dest, mp_bitcnt_t bit_idx)
>  
>
> I suppose that the name should be mpz_set_2exp, for consistency?
>

I think that every function that initialize an mpz_t should have mpz_init_ as a prefix.
And since mpz_init_setbit would be equivalent to mpz_init followed by mpz_setbit,
I proposed this name.

But you remind me also that I'd also like to add a couple of functions:
mpz_addmul_2exp, and mpz_submul_2exp.
But I should implement them... someday, maybe.
Ĝis,
m

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