_mm_tzcnt_64
Classification
Other, Bit Manipulation, CPUID Test: BMI1
Header File
immintrin.h
Instruction
TZCNT r64, r64
Synopsis
 _mm_tzcnt_64(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