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HEAD
Use -pthread instead of -lpthread on FreeBSD
[fio.git]
/
lib
/
ffz.h
1
#ifndef FIO_FFZ_H
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#define FIO_FFZ_H
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static inline int __ffs(int word)
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{
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int r = 0;
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if (!(word & 0xffff)) {
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word >>= 16;
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r += 16;
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}
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if (!(word & 0xff)) {
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word >>= 8;
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r += 8;
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}
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if (!(word & 0xf)) {
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word >>= 4;
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r += 4;
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}
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if (!(word & 3)) {
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word >>= 2;
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r += 2;
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}
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if (!(word & 1)) {
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word >>= 1;
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r += 1;
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}
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return r;
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}
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static inline int ffz(unsigned int bitmask)
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{
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return __ffs(~bitmask);
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}
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#endif