Merge pull request #1 from redstar/popcnt

Add implementation of popcnt.
ldc-developers · Feb 18, 2012 · 5cde6e3 · 5cde6e3
2 parents 3645d7e + e62bab4
commit 5cde6e3
Showing 1 changed file with 5 additions and 1 deletion.
diff --git a/src/core/bitop.d b/src/core/bitop.d
@@ -352,7 +352,11 @@ else
  */
 version (LDC)
 {
-        int popcnt(uint x);
+    private pure pragma(intrinsic, "llvm.ctpop.i#") T ctpop(T)(T v);
+    pure int popcnt(uint x)
+    {
+        return cast(int) ctpop(x);
+    }
 }
 else
 {