Developer Guide and Reference

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Intrinsics for Integer Bit Manipulation and Conflict Detection Operations

The prototypes for Intel® Advanced Vector Extensions 512 (Intel® AVX-512) intrinsics are located in the
zmmintrin.h
header file.
To use these intrinsics, include the
immintrin.h
file as follows:
#include <immintrin.h>
Intrinsic Name
Operation
Corresponding
Intel® AVX-512 Instruction
_mm512_lzcnt_epi32
,
_mm512_mask_lzcnt_epi32
,
_mm512_maskz_lzcnt_epi32
Counts the leading zero bits in source int32 elements.
VPLZCNTD
_mm512_lzcnt_epi64
,
_mm512_mask_lzcnt_epi64
,
_mm512_maskz_lzcnt_epi64
Counts the leading zero bits in source int64 elements.
VPLZCNTQ