Adding DisEMBL dependency Tisean executable

[jabaws.git] / binaries / src / disembl / Tisean_3.0.1 / source_c / routines / find_neighbors.c

diff --git a/binaries/src/disembl/Tisean_3.0.1/source_c/routines/find_neighbors.c b/binaries/src/disembl/Tisean_3.0.1/source_c/routines/find_neighbors.c
new file mode 100644 (file)
index 0000000..e412923
--- /dev/null
+++ b/binaries/src/disembl/Tisean_3.0.1/source_c/routines/find_neighbors.c
@@ -0,0 +1,55 @@
+/*
+ *   This file is part of TISEAN
+ *
+ *   Copyright (c) 1998-2007 Rainer Hegger, Holger Kantz, Thomas Schreiber
+ *
+ *   TISEAN is free software; you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License as published by
+ *   the Free Software Foundation; either version 2 of the License, or
+ *   (at your option) any later version.
+ *
+ *   TISEAN is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *   GNU General Public License for more details.
+ *
+ *   You should have received a copy of the GNU General Public License
+ *   along with TISEAN; if not, write to the Free Software
+ *   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+/*Author: Rainer Hegger Last modified: March 1st, 1998 */
+#include <math.h>
+
+unsigned long find_neighbors(double *s,long **box,long *list,double *x,
+                            unsigned long l,unsigned int bs,unsigned int dim,
+                            unsigned int del,double eps,unsigned long *flist)
+{
+  unsigned long nf=0;
+  int i,i1,i2,j,j1,k,k1;
+  int ib=bs-1;
+  long element;
+  double dx;
+  
+  k=(int)((dim-1)*del);
+  i=(int)(x[-k]/eps)&ib;
+  j=(int)(x[0]/eps)&ib;
+  
+  for (i1=i-1;i1<=i+1;i1++) {
+    i2=i1&ib;
+    for (j1=j-1;j1<=j+1;j1++) {
+      element=box[i2][j1&ib];
+      while (element != -1) {
+       for (k=0;k<dim;k++) {
+         k1= -k*(int)del;
+         dx=fabs(x[k1]-s[element+k1]);
+         if (dx > eps)
+           break;
+       }
+       if (k == dim)
+         flist[nf++]=element;
+       element=list[element];
+      }
+    }
+  }
+  return nf;
+}