# Function std::intrinsics::simd::simd_shl

source · `pub unsafe extern "rust-intrinsic" fn simd_shl<T>(lhs: T, rhs: T) -> T`

🔬This is a nightly-only experimental API. (

`core_intrinsics`

)## Expand description

Elementwise vector left shift, with UB on overflow.

Shift `lhs`

left by `rhs`

, shifting in sign bits for signed types.

`T`

must be a vector of integer primitive types.

## §Safety

Each element of `rhs`

must be less than `<int>::BITS`

.