From 62b827f474f0aa2152dd339fcc7cf31084e16a0b Mon Sep 17 00:00:00 2001
From: emmauss <emmausssss@gmail.com>
Date: Tue, 20 Feb 2018 22:09:23 +0200
Subject: Split main project into core,graphics and chocolarm4 subproject (#29)

---
 ChocolArm64/ABitUtils.cs | 57 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 57 insertions(+)
 create mode 100644 ChocolArm64/ABitUtils.cs

(limited to 'ChocolArm64/ABitUtils.cs')

diff --git a/ChocolArm64/ABitUtils.cs b/ChocolArm64/ABitUtils.cs
new file mode 100644
index 00000000..357dd45d
--- /dev/null
+++ b/ChocolArm64/ABitUtils.cs
@@ -0,0 +1,57 @@
+namespace ChocolArm64
+{
+    static class ABitUtils
+    {
+        public static int CountBitsSet(long Value)
+        {
+            int Count = 0;
+
+            for (int Bit = 0; Bit < 64; Bit++)
+            {
+                Count += (int)(Value >> Bit) & 1;
+            }
+
+            return Count;
+        }
+
+        public static int HighestBitSet32(int Value)
+        {
+            for (int Bit = 31; Bit >= 0; Bit--)
+            {
+                if (((Value >> Bit) & 1) != 0)
+                {
+                    return Bit;
+                }
+            }
+
+            return -1;
+        }
+
+        public static long Replicate(long Bits, int Size)
+        {
+            long Output = 0;
+
+            for (int Bit = 0; Bit < 64; Bit += Size)
+            {
+                Output |= Bits << Bit;
+            }
+
+            return Output;
+        }
+
+        public static long FillWithOnes(int Bits)
+        {
+            return Bits == 64 ? -1L : (1L << Bits) - 1;
+        }
+
+        public static long RotateRight(long Bits, int Shift, int Size)
+        {
+            return (Bits >> Shift) | (Bits << (Size - Shift));
+        }
+
+        public static bool IsPow2(int Value)
+        {
+            return Value != 0 && (Value & (Value - 1)) == 0;
+        }
+    }
+}
\ No newline at end of file
-- 
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