EC_GROUP_set_point_conversion_form
EC_GROUP_set_point_conversion_form(group, ecparam_config.form);
EC_GROUP_set_point_conversion_form(group, ecparam_config.form);
EC_GROUP_set_point_conversion_form(ret, (point_conversion_form_t)
EC_GROUP_set_point_conversion_form(key->group, cform);
void EC_GROUP_set_point_conversion_form(EC_GROUP *group, point_conversion_form_t form);