method

prime_fasttest?

Ruby latest stable (v2_5_5) - 0 notes - Class: BN

prime_fasttest?(p1 = v1, p2 = v2) public

Performs a Miller-Rabin primality test. This is same as #prime? except this first attempts trial divisions with some small primes.

Parameters

checks - integer
trial_div - boolean

Show source

static VALUE
ossl_bn_is_prime_fasttest(int argc, VALUE *argv, VALUE self)
{
    BIGNUM *bn;
    VALUE vchecks, vtrivdiv;
    int checks = BN_prime_checks, do_trial_division = 1;

    rb_scan_args(argc, argv, "02", &vchecks, &vtrivdiv);

    if (!NIL_P(vchecks)) {
        checks = NUM2INT(vchecks);
    }
    GetBN(self, bn);
    /* handle true/false */
    if (vtrivdiv == Qfalse) {
        do_trial_division = 0;
    }
    switch (BN_is_prime_fasttest_ex(bn, checks, ossl_bn_ctx, do_trial_division, NULL)) {
    case 1:
        return Qtrue;
    case 0:
        return Qfalse;
    default:
        ossl_raise(eBNError, NULL);
    }
    /* not reachable */
    return Qnil;
}

prime_fasttest?

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Parameters

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