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/usr/src/kernels/5.14.0-427.31.1.el9_4.x86_64/tools/include/asm-generic/bitops
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5.14.0-427.31.1.el9_4.x86_64
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Edit file: /usr/src/kernels/5.14.0-427.31.1.el9_4.x86_64/tools/include/asm-generic/bitops/fls.h
/* SPDX-License-Identifier: GPL-2.0 */ #ifndef _ASM_GENERIC_BITOPS_FLS_H_ #define _ASM_GENERIC_BITOPS_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(unsigned int x) { int r = 32; if (!x) return 0; if (!(x & 0xffff0000u)) { x <<= 16; r -= 16; } if (!(x & 0xff000000u)) { x <<= 8; r -= 8; } if (!(x & 0xf0000000u)) { x <<= 4; r -= 4; } if (!(x & 0xc0000000u)) { x <<= 2; r -= 2; } if (!(x & 0x80000000u)) { x <<= 1; r -= 1; } return r; } #endif /* _ASM_GENERIC_BITOPS_FLS_H_ */
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