_blsmsk_u64
Classification
Other, Bit Manipulation, CPUID Test: BMI1
Header File
Instruction
BLSMSK r64, r64
Synopsis
_blsmsk_u64(unsigned __int64 a);
Description
Set all the lower bits of "dst" up to and including the lowest set bit in unsigned 64-bit integer "a".
Operation
dst := (a - 1) XOR a