printf("srcvalue %.8f satoshis %.8f is too small txfee %.8f?\n",dstr(srcvalue),dstr(qp->satoshis),dstr(qp->txfee));
printf("srcvalue %.8f [%.8f] satoshis %.8f is too small txfee %.8f?\n",dstr(srcvalue),dstr(srcvalue)-dstr(qp->txfee+qp->satoshis),dstr(qp->satoshis),dstr(qp->txfee));