Asl Lundin's correction only when suitable modelparameters are given.

src/spicelib/devices/ind/indsetup.c

@@ -71,7 +71,8 @@ INDsetup(SMPmatrix *matrix, GENmodel *inModel, CKTcircuit *ckt, int *states)
         }
 
         /* Lundin's geometry correction factor */
-        model->INDspecInd *= Lundin(model->INDlength, model->INDcsect);
+        if(model->INDlengthGiven && (model->INDdiaGiven || model->INDcsectGiven))
+            model->INDspecInd *= Lundin(model->INDlength, model->INDcsect);
 
 /*
         double kl = Lundin(model->INDlength, model->INDcsect);
@@ -145,6 +146,8 @@ static double Lundin(double l, double csec)
     /* x = solenoid diam. / length */
     double num, den, kk, x, xx, xxxx;
 
+
+
     if (csec < 1e-12 || l < 1e-6) {
         fprintf(stderr, "Warning: coil geometries too small (< 1um length dimensions),\n");
         fprintf(stderr, "    Lundin's correction factor will not be calculated\n");