portability and compression cleanups

[wimlib] / include / wimlib / lzx.h

diff --git a/include/wimlib/lzx.h b/include/wimlib/lzx.h
index da0c55143c4bc9a569bdc5550b51c0e16c16d80b..5bd6b1406a3b6e9cdf3e7e54232adc8e829cdf75 100644 (file)
--- a/include/wimlib/lzx.h
+++ b/include/wimlib/lzx.h
@@ -8,6 +8,7 @@
 #define _WIMLIB_LZX_H
 
 #include "wimlib/assert.h"
+#include "wimlib/bitops.h"
 #include "wimlib/compiler.h"
 #include "wimlib/lzx_constants.h"
 #include "wimlib/util.h"
@@ -40,7 +41,7 @@ lzx_get_offset_slot_raw(u32 adjusted_offset)
                return (adjusted_offset >> 17) + 34;
        } else {
                LZX_ASSERT(2 <= adjusted_offset && adjusted_offset < 655360);
-               unsigned mssb_idx = bsr32(adjusted_offset);
+               unsigned mssb_idx = fls32(adjusted_offset);
                return (mssb_idx << 1) |
                        ((adjusted_offset >> (mssb_idx - 1)) & 1);
        }