# Type Alias std::simd::prelude::mask64x1

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    pub type mask64x1 = Mask<i64, 1>;

🔬This is a nightly-only experimental API. (`portable_simd` #86656)
Expand description

A SIMD mask with one element for vectors with 64-bit element types.

The layout of this type is unspecified, and may change between platforms and/or Rust versions, and code should not assume that it is equivalent to `[i64; 1]`.

## Aliased Type§

    struct mask64x1(/* private fields */);