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#ifndef FIO_FFZ_H
#define FIO_FFZ_H
#include <inttypes.h>
static inline int ffs64(uint64_t word)
{
int r = 0;
if ((word & 0xffffffff) == 0) {
r += 32;
word >>= 32;
}
if (!(word & 0xffff)) {
word >>= 16;
r += 16;
}
if (!(word & 0xff)) {
word >>= 8;
r += 8;
}
if (!(word & 0xf)) {
word >>= 4;
r += 4;
}
if (!(word & 3)) {
word >>= 2;
r += 2;
}
if (!(word & 1))
r += 1;
return r;
}
#ifndef ARCH_HAVE_FFZ
static inline int ffz(unsigned long bitmask)
{
return ffs64(~bitmask);
}
#else
#define ffz(bitmask) arch_ffz(bitmask)
#endif
static inline int ffz64(uint64_t bitmask)
{
return ffs64(~bitmask);
}
#endif
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