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## svldff1_gather_s64index_u64

# Function svldff1_gather_s64index_u64

Source

    pub unsafe fn svldff1_gather_s64index_u64(
        pg: svbool_t,
        base: *const u64,
        indices: svint64_t,
    ) -> svuint64_t

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

Unextended load, 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).
- 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.