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Lines Matching refs:a12

553     double a11,a12,a21,a22;
557     a12 = -(xD-xC)*(xB-xA)-(yD-yC)*(yB-yA)-(zD-zC)*(zB-zA);
567     delta  = a11*a22-a12*a21;
574     deltaA = b1*a22-b2*a12;