michael@0: #ifndef strings_h
michael@0: #define strings_h
michael@0: 
michael@0: /* MSVC doesn't define ffs/ffsl. This dummy strings.h header is provided
michael@0:  * for both */
michael@0: #include <intrin.h>
michael@0: #pragma intrinsic(_BitScanForward)
michael@0: static __forceinline int ffsl(long x)
michael@0: {
michael@0: 	unsigned long i;
michael@0: 
michael@0: 	if (_BitScanForward(&i, x))
michael@0: 		return (i + 1);
michael@0: 	return (0);
michael@0: }
michael@0: 
michael@0: static __forceinline int ffs(int x)
michael@0: {
michael@0: 
michael@0: 	return (ffsl(x));
michael@0: }
michael@0: 
michael@0: #endif