Silence a printf warning for %lu on 32bits archs.

[SXSI/libbp.git] / bp-utils.h

diff --git a/bp-utils.h b/bp-utils.h
index b548688..2397d6f 100644 (file)
--- a/bp-utils.h
+++ b/bp-utils.h
@@ -18,26 +18,44 @@ extern "C" {
 #define RRR (1<<logRRR)
 
 
-
-
-
 #include <stdlib.h>
 
-
+#ifdef __GNUC__
+#define UNUSED __attribute__((unused))
+#else
+#define UNUSED
+#endif
 
 #ifdef HAS_NATIVE_POPCOUNT
-static inline unsigned int popcount(unsigned int n){
-  asm ("popcnt %1, %0" : "=r" (n) : "0" (n));
-  return n;
+static inline UNUSED unsigned int popcount(unsigned int n){
+  return __builtin_popcount(n);
 }
 
-static inline unsigned int popcount8(unsigned int n) {
+static inline UNUSED unsigned int popcount8(unsigned int n) {
   return popcount(n & 0xff);
 }
 
 #else
+#ifdef HAS_POPCOUNT_TABLE
+
+extern unsigned char popCount[256];
+
+static UNUSED unsigned int popcount8(unsigned int x)
+{
+  return (unsigned int) popCount[x & 0xff];
+}
+
+static UNUSED unsigned int popcount(unsigned int x)
+{
+  return popcount8(x) +
+    popcount8((x >> 8)) +
+    popcount8((x >> 16)) +
+    popcount8((x >> 24));
+}
+
 
-static unsigned int popcount8(unsigned int x)
+#else
+static UNUSED unsigned int popcount8(unsigned int x)
 {
   unsigned int r;
   r = x;
@@ -47,7 +65,7 @@ static unsigned int popcount8(unsigned int x)
   return r;
 }
 
-static inline unsigned int popcount(unsigned int x)
+static inline UNUSED unsigned int popcount(unsigned int x)
 {
   unsigned int m1 = 0x55555555;
   unsigned int m2 = 0xc30c30c3;
@@ -58,6 +76,7 @@ static inline unsigned int popcount(unsigned int x)
 }
 
 #endif
+#endif
 
 
 void * bp_malloc(size_t);
@@ -68,7 +87,7 @@ void * bp_malloc(size_t);
 
 void bp_free(void *);
 
-size_t bp_alloc_stats(void);
+size_t bp_get_alloc_stats(void);
 
 void bp_reset_alloc_states(void);