添加函数 MathUtil::popcount，用于计算一个数字中二进制1的个数

2025-08-07 22:35:10 +08:00
parent 09eaa78ba1
commit dd72a8e3fd
3 changed files with 52 additions and 0 deletions
@@ -10,6 +10,11 @@ class MathUtil
 public:
 	static size_t ComponentSize(ComponentType ct);
 	static size_t DataTypeSize(DataType dt);
+	
+	//count the number of bits set in v
+	static DV_CORE_API uint32_t popcount(uint8_t v);
+	static DV_CORE_API uint32_t popcount(uint16_t v);
+	static DV_CORE_API uint32_t popcount(uint32_t v);

 	static bool floatEqual(float a, float b,
 		float tolerance = std::numeric_limits<float>::epsilon()) {