clz

Vector Count Leading Zeros

CLZ <Vd>.<T>, <Vn>.<T>

Counts leading zeros for each element.

Details

The Vector Count Leading Zeros instruction counts leading zeros for each element.

Pseudocode Operation

Vd ← count of leading zero bits in Vn

Example

CLZ v0.4s.T, v1.4s.T

Encoding

Binary Layout
0
Q
101110
size
10000
01001
1
Rn
Rd
 
Format SIMD Two Register
Opcode 0x2E204800
Extension NEON (SIMD)

Operands

  • Vd
    Destination SIMD/FP vector register
  • Vn
    First source SIMD/FP vector register