Intel® C++ Compiler Classic Developer Guide and Reference

ID 767249
Date 7/13/2023
Public

Visible to Intel only — GUID: GUID-D1A555E9-A30C-4A1F-8048-CA9A0DFA7811

Document Table of Contents

_blsr_u32/64

Copies all bits from the source operand to the destination and resets (=0) the bit position in the destination that corresponds to the lowest set bit of the source operand. The corresponding Intel® AVX2 instruction is BLSR.

Syntax

extern unsigned int _blsr_u32(unsigned int s1);

extern unsigned __int64 _blsr_u64(unsigned __int64 s1);

Arguments

s1

the source operand from where the bits are copied

Description

Copies all bits from the source operand to the destination and resets (=0) the bit position in the destination that corresponds to the lowest set bit of the source operand.

Returns

Result of the operation