Lines Matching refs:xx
805 double x=m_x[i], xx=x*x, xxx=xx*x;
806 fvec[i] = (b[0]+b[1]*x+b[2]*xx+b[3]*xxx) / (1.+b[4]*x+b[5]*xx+b[6]*xxx) - m_y[i];
817 double x=m_x[i], xx=x*x, xxx=xx*x;
818 double fact = 1./(1.+b[4]*x+b[5]*xx+b[6]*xxx);
821 fjac(i,2) = xx*fact;
823 fact = - (b[0]+b[1]*x+b[2]*xx+b[3]*xxx) * fact * fact;
825 fjac(i,5) = xx*fact;
1384 double x = _x[i], xx=x*x;
1385 fvec[i] = b[0]*(xx+x*b[1])/(xx+x*b[2]+b[3]) - y[i];
1395 double x = _x[i], xx=x*x;
1396 double factor = 1./(xx+x*b[2]+b[3]);
1397 fjac(i,0) = (xx+x*b[1]) * factor;
1399 fjac(i,2) = - b[0]*(xx+x*b[1]) * x * factor * factor;
1400 fjac(i,3) = - b[0]*(xx+x*b[1]) * factor * factor;
1550 double x=_x[i], xx=x*x, xxx=xx*x;
1551 fvec[i] = (b[0]+b[1]*x+b[2]*xx+b[3]*xxx) / (1.+b[4]*x+b[5]*xx+b[6]*xxx) - _y[i];
1561 double x=_x[i], xx=x*x, xxx=xx*x;
1562 double fact = 1./(1.+b[4]*x+b[5]*xx+b[6]*xxx);
1565 fjac(i,2) = xx*fact;
1567 fact = - (b[0]+b[1]*x+b[2]*xx+b[3]*xxx) * fact * fact;
1569 fjac(i,5) = xx*fact;
