Lines Matching refs:a21
553 double a11,a12,a21,a22;558 a21 = (xB-xA)*(xD-xC)+(yB-yA)*(yD-yC)+(zB-zA)*(zD-zC);567 delta = a11*a22-a12*a21;575 deltaB = a11*b2-b1*a21;