OSSL_PARAM_get_double
dok = OSSL_PARAM_get_double(p, &d);
int OSSL_PARAM_get_double(const OSSL_PARAM *p, double *val);
|| !TEST_true(OSSL_PARAM_get_double(p, &d))
rc = OSSL_PARAM_get_double(param, &dval);
|| !TEST_true(OSSL_PARAM_get_double(cp, &d2))
if (!TEST_false(OSSL_PARAM_get_double(pc->param, &d))
if (!TEST_true(OSSL_PARAM_get_double(pc->param, &d))) {
&& !TEST_true(OSSL_PARAM_get_double(p, &obj->p2)))