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15 lines
365 B
C++
15 lines
365 B
C++
#pragma once
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#if defined(__aarch64__) && defined(__ARM_NEON)
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# include <arm_neon.h>
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# pragma clang diagnostic ignored "-Wreserved-identifier"
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/// Returns a 64 bit mask of nibbles (4 bits for each byte).
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inline uint64_t getNibbleMask(uint8x16_t res)
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{
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return vget_lane_u64(vreinterpret_u64_u8(vshrn_n_u16(vreinterpretq_u16_u8(res), 4)), 0);
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}
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#endif
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