# Function core::arch::wasm::v128_load64_zero

1.54.0 · source ·

    pub unsafe fn v128_load64_zero(m: *const u64) -> v128

Available on `target_family="wasm"` and target feature `simd128` only.
Expand description

Load a 64-bit element into the low bits of the vector and sets all other bits to zero.

This intrinsic is provided for completeness and is equivalent to `u64x2_replace_lane::<0>(u64x2(0, 0), *m)` (which doesn’t require `unsafe`).

## §Unsafety

This intrinsic is unsafe because it takes a raw pointer as an argument, and the pointer must be valid to load 8 bytes from. Note that there is no alignment requirement on this pointer since this intrinsic performs a 1-aligned load.