added GetBitOffset

2023-06-12 16:25:51 +08:00
parent 51650bd4b1
commit be17b06a2f
1 changed files with 18 additions and 0 deletions
--- a/inc/hgl/TypeFunc.h
+++ b/inc/hgl/TypeFunc.h
@@ -143,6 +143,24 @@ namespace hgl
        return count;
    }

+    template<typename T>
+    inline constexpr int GetBitOffset(const T value)
+    {
+        int offset=0;
+        T bit=1;
+
+        for(int i=0;i<sizeof(T)*8;i++)
+        {
+            if(value&bit)
+                return offset;
+
+            bit<<=1;
+            ++offset;
+        }
+
+        return -1;
+    }
+
    constexpr uint      HGL_SIZE_1KB    =1024;
    constexpr uint      HGL_SIZE_1MB    =HGL_SIZE_1KB*1024;
    constexpr uint      HGL_SIZE_1GB    =HGL_SIZE_1MB*1024;