compiler/c2/PolynomialRoot.java

36               final double [] im_root)
40   return root4(p,re_root,im_root);
44   return root3(p,re_root,im_root);
48   return root2(p,re_root,im_root);
52   return root1(p,re_root,im_root);
67 public static int root4(final double [] p,final double [] re_root,final double [] im_root)
75     im_root[0]=im_root[1]=im_root[2]=im_root[3]=Double.NaN;
98     im_root[0]=im_root[1]=im_root[2]=im_root[3]=0;
108         im_root[0]=re_root[0];
110         im_root[1]=re_root[0];
112         im_root[2]=-re_root[0];
114         im_root[3]=-re_root[0];
121         im_root[0]=0;
123         im_root[1]=sq4;
125         im_root[2]=-sq4;
127         im_root[3]=0;
136       root2(new double []{p[2],p[3],p[4]},re_root,im_root);
137       re_root[2]=im_root[2]=re_root[3]=im_root[3]=0;
366   im_root[0]=w1_im+w2_im+w3_im;
368   im_root[1]=-(w1_im+w2_im)+w3_im;
370   im_root[2]=w2_im-w1_im-w3_im;
372   im_root[3]=w1_im-w2_im-w3_im;
520     public static int root1(final double [] p,final double [] re_root,final double [] im_root)
524       re_root[0]=im_root[0]=Double.NaN;
528   im_root[0]=0;
532     public static int root2(final double [] p,final double [] re_root,final double [] im_root)
536       re_root[0]=re_root[1]=im_root[0]=im_root[1]=Double.NaN;
558       im_root[0]=im_root[1]=0;
564       im_root[0]=sq;
565       im_root[1]=-sq;
570     public static int root3(final double [] p,final double [] re_root,final double [] im_root)
576     im_root[0]=im_root[1]=im_root[2]=Double.NaN;
598       im_root[0]=im_root[1]=im_root[2]=0;
616     im_root[0]=im_root[1]=im_root[2]=0;
622     im_root[0]=im_root[1]=im_root[2]=0;
639       im_root[0]=im_root[1]=im_root[2]=0;
649       im_root[0]=0;
651       im_root[1]=-(SQRT3*0.5) * Math.abs(A - B);
653       im_root[2]=-im_root[1];
660     static void root3a(final double [] p,final double [] re_root,final double [] im_root)
675     im_root[0]=im_root[1]=im_root[2]=0;
692     im_root[0]=0;
695     im_root[1]=(v1-v2)*(SQRT3*0.5);
696     im_root[2]=-im_root[1];
702       re_root[0]=re_root[1]=re_root[2]=im_root[0]=im_root[1]=im_root[2]=Double.NaN;
712       final double [] re_root=new double [4],im_root=new double [4];
734     root4(p,re_root,im_root);
744     root3(p,re_root,im_root);
755                im_root[i]);