DH_R_BN_ERROR
ERR_raise(ERR_LIB_DH, DH_R_BN_ERROR);
ERR_raise(ERR_LIB_DH, DH_R_BN_ERROR);
ERR_raise(ERR_LIB_DH, DH_R_BN_ERROR);
{ ERR_PACK(ERR_LIB_DH, 0, DH_R_BN_ERROR), "bn error" },
int err_reason = DH_R_BN_ERROR;
ERR_raise(ERR_LIB_DH, DH_R_BN_ERROR);