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#ifndef I386_BITOPS_H
#define I386_BITOPS_H
/**
* log2 - Find the truncated log base 2 of x
*/
static inline unsigned long log2(unsigned long x)
{
unsigned long r = 0;
__asm__(
"bsrl %1, %0\n\t"
"jnz 1f\n\t"
"movl $-1, %0\n\t"
"1:\n\t"
: "=r" (r) : "r" (x));
return r;
}
#endif /* I386_BITOPS_H */
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