Function kadd16 

pub fn kadd16(a: usize, b: usize) -> usize

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

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

Adds packed 16-bit signed numbers, saturating at the numeric bounds