X-Git-Url: http://git.nguyen.vg/gitweb/?a=blobdiff_plain;f=darray.c;h=780b9673c0463f5a53a83dfdc3b835bfe6883400;hb=1c40b498ddd6d66b09aff3a22b9f7ddd845250dc;hp=3359ed305466da861d6f3815097aeb30bcc2b267;hpb=912ff50e1d38de484b503d8ef877a49a65765ab9;p=SXSI%2FXMLTree.git

diff --git a/darray.c b/darray.c
index 3359ed3..780b967 100644
--- a/darray.c
+++ b/darray.c
@@ -46,6 +46,27 @@ int setbit(pb *B, int i,int x)
   return x;
 }
 
+int setbit_zero(pb *B, int i)
+{
+  int j,l;
+  j = i >> logD;
+  l = i & (D-1);
+  B[j] &= (~(1<<(D-1-l)));
+  return 0;
+}
+
+int setbit_one(pb *B, int i)
+{
+  int j,l;
+  j = i >> logD;
+  l = i & (D-1);
+  B[j] |= (1<<(D-1-l));
+  return 1;
+
+}
+
+
+
 int setbits(pb *B, int i, int d, int x)
 {
   int j;
@@ -113,7 +134,7 @@ static const unsigned int popCount[] = {
 
 static int selecttbl[8*256];
 
-unsigned int popcount(pb x)
+unsigned int popcount_old(pb x)
 {
   pb r;
 #if 0
@@ -142,6 +163,18 @@ unsigned int popcount(pb x)
   return r;
 }
 
+inline unsigned int
+popcount(pb x) 
+{
+  uint m1 = 0x55555555;
+  uint m2 = 0xc30c30c3;
+  x -= (x >> 1) & m1;
+  x = (x & m2) + ((x >> 2) & m2) + ((x >> 4) & m2);
+  x += x >> 6;
+  return  (x + (x >> 12) + (x >> 24)) & 0x3f;
+}
+
+
 unsigned int popcount8(pb x)
 {
   dword r;