X-Git-Url: http://git.nguyen.vg/gitweb/?a=blobdiff_plain;f=libcds%2Fsrc%2Fstatic_bitsequence%2Fsdarray.cpp;fp=libcds%2Fsrc%2Fstatic_bitsequence%2Fsdarray.cpp;h=28758d36200932ab9e3de41f268efc09a0cda3af;hb=14640e9a1cfbbe8d6669d17d098fcabc3652cd77;hp=58b72e0500c9b0fd80969d51a45bc855bac8e2e8;hpb=137f5dd42abc5afe132ef3f45dcb7f2bf2b595db;p=SXSI%2FXMLTree.git

diff --git a/libcds/src/static_bitsequence/sdarray.cpp b/libcds/src/static_bitsequence/sdarray.cpp
index 58b72e0..28758d3 100644
--- a/libcds/src/static_bitsequence/sdarray.cpp
+++ b/libcds/src/static_bitsequence/sdarray.cpp
@@ -649,6 +649,9 @@ int selects3_construct(selects3 *select, int n, uint *buf) {
   return 0;
 }
 
+selects3 * lasts3=NULL;
+int lasti=0;
+int lasts=0;
 
 int selects3_select(selects3 *select, int i) {
   int d,x;
@@ -663,16 +666,22 @@ int selects3_select(selects3 *select, int i) {
   if (i == 0) return -1;
 
   d = select->d;
-
-  x = selectd2_select(select->sd1,i,1) - (i-1);
-  x <<= d;
+	if(lasts3==select && lasti==i) {
+		while(!__getbit2(select->sd1->buf,++lasti));
+	} 
+	else {
+	  lasts = selectd2_select(select->sd1,i,1);
+	}
+	lasti = i;
+	lasts3 = select;
+  x = (lasts-(i-1)) << d;
   x += __getbits(select->low,(i-1)*d,d);
   return x;
-
 }
 
 
 int selects3_selectnext(selects3 *select, int i) {
+	return selects3_select(select,selects3_rank(select,i)+1);
   int d,x,w,y;
   int r,j;
   int z,ii;