Function random_fe_non_zero

src/secp256k1/src/tests.c:3005–3016

}

static void random_fe_non_zero(secp256k1_fe *nz) {
    int tries = 10;
    while (--tries >= 0) {
        random_fe(nz);
        secp256k1_fe_normalize(nz);
        if (!secp256k1_fe_is_zero(nz)) {
            break;
        }
    }
    /* Infinitesimal probability of spurious failure here */
    CHECK(tries >= 0);
}

static void random_fe_non_square(secp256k1_fe *ns) {
    secp256k1_fe r;