Function vmul_n_s32 

pub fn vmul_n_s32(a: int32x2_t, b: i32) -> int32x2_t

Available on (AArch64 or ARM64EC) and (AArch64 or ARM64EC or target feature v7) and (ARM or AArch64 or ARM64EC) and target feature neon only.

Vector multiply by scalar Arm’s documentation