# Function core::arch::wasm32::v128_load64_splat

1.54.0 · source · [−]

    pub unsafe fn v128_load64_splat(m: *const u64) -> v128

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

Load a single element and splat to all lanes of a v128 vector.

While this intrinsic is provided for completeness it can also be replaced with `u64x2_splat(*m)` and it should generate equivalent code (and also not 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.