Fix compilation on MSVC

carlo-bramini · web-flow · commit 81c5b71f9865 · 2018-02-01T19:33:23.000+01:00
MSVC does not provide __builtin_clz intrinsic, but hopefully a portable implementation is available in the "#if 0" and it could be used in these circumstances,
diff --git a/src/fmv/internal/common.h b/src/fmv/internal/common.h
@@ -529,7 +529,7 @@ static inline int av_parity_c(uint32_t v)
 
 static inline int av_log2(uint32_t value)
 {
-#if 0
+#ifndef __GNUC__
     int ret = 0;
     for(; value; value >>= 1, ++ret);
     return ret ? ret - 1 : ret;

Original file line number	Diff line number	Diff line change
`@@ -529,7 +529,7 @@ static inline int av_parity_c(uint32_t v)`
`529`	`529`
`530`	`530`	`static inline int av_log2(uint32_t value)`
`531`	`531`	`{`
`532`		`-#if 0`
	`532`	`+#ifndef __GNUC__`
`533`	`533`	`int ret = 0;`
`534`	`534`	`for(; value; value >>= 1, ++ret);`
`535`	`535`	`return ret ? ret - 1 : ret;`