shithub: dav1d

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attributes: fix clzll on 32-bit MSVC

--- a/include/common/attributes.h

+++ b/include/common/attributes.h

@@ -87,11 +87,20 @@

     return (31 - leading_zero);

 }

+#ifndef _M_IX86

 static inline int clzll(const unsigned long long mask) {

     unsigned long leading_zero = 0;

     _BitScanReverse64(&leading_zero, mask);

     return (63 - leading_zero);

 }

+#else /* _M_IX86 */

+static inline int clzll(const unsigned long long mask) {

+    if (mask >> 32)

+        return clz((unsigned)(mask >> 32));

+    else

+        return clz((unsigned)mask) + 32;

+}

+#endif /* _M_IX86 */

 #else /* !_MSC_VER */

 static inline int ctz(const unsigned int mask) {

     return __builtin_ctz(mask);