Function clz32 

pub fn clz32(a: usize) -> usize

🔬This is a nightly-only experimental API. (riscv_ext_intrinsics #114544)

Available on (RISC-V RV32) and (RISC-V RV32 or RISC-V RV64) only.

Count the number of leading zero bits of the packed 32-bit elements