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| Direktori : /usr/src/kernels/3.10.0-1160.88.1.el7.centos.plus.x86_64/include/asm-generic/bitops/ |
| Current File : //usr/src/kernels/3.10.0-1160.88.1.el7.centos.plus.x86_64/include/asm-generic/bitops/builtin-fls.h |
#ifndef _ASM_GENERIC_BITOPS_BUILTIN_FLS_H_
#define _ASM_GENERIC_BITOPS_BUILTIN_FLS_H_
/**
* fls - find last (most-significant) bit set
* @x: the word to search
*
* This is defined the same way as ffs.
* Note fls(0) = 0, fls(1) = 1, fls(0x80000000) = 32.
*/
static __always_inline int fls(int x)
{
return x ? sizeof(x) * 8 - __builtin_clz(x) : 0;
}
#endif