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/* Public domain. */
#ifndef _LINUX_LOG2_H
#define _LINUX_LOG2_H
#include <sys/types.h>
#include <sys/systm.h>
#define ilog2(x) ((sizeof(x) <= 4) ? (fls(x) - 1) : (flsl(x) - 1))
int drm_order(unsigned long);
#define is_power_of_2(x) (((x) != 0) && (((x) - 1) & (x)) == 0)
#define order_base_2(x) drm_order(x)
static inline unsigned long
roundup_pow_of_two(unsigned long x)
{
return (1UL << flsl(x - 1));
}
static inline unsigned long
rounddown_pow_of_two(unsigned long x)
{
return (1UL << (flsl(x) - 1));
}
#endif
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