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| Direktori : /lib/modules/3.10.0-957.21.3.el7.centos.plus.x86_64/source/include/asm-generic/bitops/ |
| Current File : //lib/modules/3.10.0-957.21.3.el7.centos.plus.x86_64/source/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) set bit in a long word
* @word: the word to search
*
* Undefined if no set bit exists, so code should check against 0 first.
*/
static __always_inline unsigned long __fls(unsigned long word)
{
return (sizeof(word) * 8) - 1 - __builtin_clzl(word);
}
#endif