//  IBM_PROLOG_BEGIN_TAG
//  This is an automatically generated prolog.
//
//  $Source: src/include/math.h $
//
//  IBM CONFIDENTIAL
//
//  COPYRIGHT International Business Machines Corp. 2011
//
//  p1
//
//  Object Code Only (OCO) source materials
//  Licensed Internal Code Source Materials
//  IBM HostBoot Licensed Internal Code
//
//  The source code for this program is not published or other-
//  wise divested of its trade secrets, irrespective of what has
//  been deposited with the U.S. Copyright Office.
//
//  Origin: 30
//
//  IBM_PROLOG_END
#include <stdint.h>
#include <builtins.h>

#ifndef _MATH_H
#define _MATH_H

#ifdef __cplusplus
extern "C"
{
#endif

ALWAYS_INLINE
static inline int64_t log2(uint64_t s)
{
    int64_t n = cntlzd(s);
    return 63-n;
}

#ifdef __cplusplus
};
#endif

#endif