_tzcnt_u64
Classification
Other, Bit Manipulation, CPUID Test: BMI1
Header File
Instruction
TZCNT r64, r64
Synopsis
_tzcnt_u64(unsigned __int64 a);
Description
Count the number of trailing zero bits in unsigned 64-bit integer "a", and return that count in "dst".
Operation
tmp := 0
dst := 0
DO WHILE ((tmp < 64) AND a[tmp] == 0)
tmp := tmp + 1
dst := dst + 1
OD