diff options
Diffstat (limited to 'libcelt/ecintrin.h')
| -rw-r--r-- | libcelt/ecintrin.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/libcelt/ecintrin.h b/libcelt/ecintrin.h index 4591d07..9222a3c 100644 --- a/libcelt/ecintrin.h +++ b/libcelt/ecintrin.h @@ -81,6 +81,9 @@ All other code should use EC_ILOG() instead.*/ #if defined(_MSC_VER) # include <intrin.h> +/*In _DEBUG mode this is not an intrinsic by default.*/ +# pragma intrinsic(_BitScanReverse) + static __inline int ec_bsr(unsigned long _x){ unsigned long ret; _BitScanReverse(&ret,_x); @@ -111,6 +114,8 @@ static __inline int ec_bsr(unsigned long _x){ When we need to, it can be special cased.*/ # define EC_ILOG(_x) (EC_CLZ0-EC_CLZ(_x)) #else +int ec_ilog(ec_uint32 _v); + # define EC_ILOG(_x) (ec_ilog(_x)) #endif |