21 lines
804 B
C
21 lines
804 B
C
#ifndef COSMOPOLITAN_LIBC_INTRIN_PEXT_H_
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#define COSMOPOLITAN_LIBC_INTRIN_PEXT_H_
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#if !(__ASSEMBLER__ + __LINKER__ + 0)
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COSMOPOLITAN_C_START_
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uint64_t pext(uint64_t, uint64_t) pureconst;
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#define PEXT(NUMBER, BITMASK) \
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({ \
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typeof(BITMASK) ShuffledBits, Number = (NUMBER); \
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asm("pext\t%2,%1,%0" : "=r"(ShuffledBits) : "r"(Number), "rm"(BITMASK)); \
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ShuffledBits; \
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})
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#define pext(NUMBER, BITMASK) \
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(!X86_HAVE(BMI2) ? pext(NUMBER, BITMASK) : PEXT(NUMBER, BITMASK))
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COSMOPOLITAN_C_END_
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#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
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#endif /* COSMOPOLITAN_LIBC_INTRIN_PEXT_H_ */
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