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## svldff1uh_vnum_s64

# Function svldff1uh_vnum_s64

Source

    pub unsafe fn svldff1uh_vnum_s64(
        pg: svbool_t,
        base: *const u16,
        vnum: i64,
    ) -> svint64_t

🔬This is a nightly-only experimental API. (`stdarch_aarch64_sve` #145052)
Available on target feature `sve` and (AArch64 or ARM64EC) only.
Expand description

Load 16-bit data and zero-extend, first-faulting Arm’s documentation

### §Safety

- `pointer::offset` safety constraints must be met for the address calculation for each active element (governed by `pg`, the first-fault register (`FFR`) and first-faulting behaviour). In particular, note that `vnum` is scaled by the vector length, `VL`, which is not known at compile time.
- This dereferences and accesses the calculated address for each active element (governed by `pg`, the first-fault register (`FFR`) and first-faulting behaviour).
- Result lanes corresponding to inactive FFR lanes (either before or as a result of this intrinsic) have “CONSTRAINED UNPREDICTABLE” values, irrespective of predication. Refer to architectural documentation for details.