22 lines
768 B
C
22 lines
768 B
C
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#ifndef COSMOPOLITAN_LIBC_NEXGEN32E_BSF_H_
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#define COSMOPOLITAN_LIBC_NEXGEN32E_BSF_H_
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#if !(__ASSEMBLER__ + __LINKER__ + 0)
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COSMOPOLITAN_C_START_
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unsigned bsf(unsigned) libcesque pureconst;
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unsigned bsfl(unsigned long) libcesque pureconst;
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unsigned bsfmax(uintmax_t) libcesque pureconst;
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#define bsf(X) \
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({ \
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unsigned Res; \
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typeof(X) Word; \
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asm("bsf\t%1,%0" : "=r,r"(Word) : "r,m"(X)); \
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Res = Word; \
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Res; \
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})
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COSMOPOLITAN_C_END_
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#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
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#endif /* COSMOPOLITAN_LIBC_NEXGEN32E_BSF_H_ */
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