wasmtime_environ::__core::simd::prelude

Trait SimdUint

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pub trait SimdUint: Copy + Sealed {
    type Scalar;
    type Cast<T: SimdElement>;


Show 17 methods    // Required methods
    fn cast<T>(self) -> Self::Cast<T>
       where T: SimdCast;
    fn wrapping_neg(self) -> Self;
    fn saturating_add(self, second: Self) -> Self;
    fn saturating_sub(self, second: Self) -> Self;
    fn reduce_sum(self) -> Self::Scalar;
    fn reduce_product(self) -> Self::Scalar;
    fn reduce_max(self) -> Self::Scalar;
    fn reduce_min(self) -> Self::Scalar;
    fn reduce_and(self) -> Self::Scalar;
    fn reduce_or(self) -> Self::Scalar;
    fn reduce_xor(self) -> Self::Scalar;
    fn swap_bytes(self) -> Self;
    fn reverse_bits(self) -> Self;
    fn leading_zeros(self) -> Self;
    fn trailing_zeros(self) -> Self;
    fn leading_ones(self) -> Self;
    fn trailing_ones(self) -> Self;

}
🔬This is a nightly-only experimental API. (portable_simd)
Expand description

Operations on SIMD vectors of unsigned integers.

Required Associated Types§

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type Scalar

🔬This is a nightly-only experimental API. (portable_simd)

Scalar type contained by this SIMD vector type.

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type Cast<T: SimdElement>

🔬This is a nightly-only experimental API. (portable_simd)

A SIMD vector with a different element type.

Required Methods§

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fn cast<T>(self) -> Self::Cast<T>
where T: SimdCast,

🔬This is a nightly-only experimental API. (portable_simd)

Performs elementwise conversion of this vector’s elements to another SIMD-valid type.

This follows the semantics of Rust’s as conversion for casting integers (wrapping to other integer types, and saturating to float types).

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fn wrapping_neg(self) -> Self

🔬This is a nightly-only experimental API. (portable_simd)

Wrapping negation.

Like u32::wrapping_neg, all applications of this function will wrap, with the exception of -0.

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fn saturating_add(self, second: Self) -> Self

🔬This is a nightly-only experimental API. (portable_simd)

Lanewise saturating add.

§Examples
use core::u32::MAX;
let x = Simd::from_array([2, 1, 0, MAX]);
let max = Simd::splat(MAX);
let unsat = x + max;
let sat = x.saturating_add(max);
assert_eq!(unsat, Simd::from_array([1, 0, MAX, MAX - 1]));
assert_eq!(sat, max);
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fn saturating_sub(self, second: Self) -> Self

🔬This is a nightly-only experimental API. (portable_simd)

Lanewise saturating subtract.

§Examples
use core::u32::MAX;
let x = Simd::from_array([2, 1, 0, MAX]);
let max = Simd::splat(MAX);
let unsat = x - max;
let sat = x.saturating_sub(max);
assert_eq!(unsat, Simd::from_array([3, 2, 1, 0]));
assert_eq!(sat, Simd::splat(0));
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fn reduce_sum(self) -> Self::Scalar

🔬This is a nightly-only experimental API. (portable_simd)

Returns the sum of the elements of the vector, with wrapping addition.

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fn reduce_product(self) -> Self::Scalar

🔬This is a nightly-only experimental API. (portable_simd)

Returns the product of the elements of the vector, with wrapping multiplication.

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fn reduce_max(self) -> Self::Scalar

🔬This is a nightly-only experimental API. (portable_simd)

Returns the maximum element in the vector.

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fn reduce_min(self) -> Self::Scalar

🔬This is a nightly-only experimental API. (portable_simd)

Returns the minimum element in the vector.

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fn reduce_and(self) -> Self::Scalar

🔬This is a nightly-only experimental API. (portable_simd)

Returns the cumulative bitwise “and” across the elements of the vector.

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fn reduce_or(self) -> Self::Scalar

🔬This is a nightly-only experimental API. (portable_simd)

Returns the cumulative bitwise “or” across the elements of the vector.

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fn reduce_xor(self) -> Self::Scalar

🔬This is a nightly-only experimental API. (portable_simd)

Returns the cumulative bitwise “xor” across the elements of the vector.

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fn swap_bytes(self) -> Self

🔬This is a nightly-only experimental API. (portable_simd)

Reverses the byte order of each element.

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fn reverse_bits(self) -> Self

🔬This is a nightly-only experimental API. (portable_simd)

Reverses the order of bits in each elemnent. The least significant bit becomes the most significant bit, second least-significant bit becomes second most-significant bit, etc.

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fn leading_zeros(self) -> Self

🔬This is a nightly-only experimental API. (portable_simd)

Returns the number of leading zeros in the binary representation of each element.

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fn trailing_zeros(self) -> Self

🔬This is a nightly-only experimental API. (portable_simd)

Returns the number of trailing zeros in the binary representation of each element.

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fn leading_ones(self) -> Self

🔬This is a nightly-only experimental API. (portable_simd)

Returns the number of leading ones in the binary representation of each element.

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fn trailing_ones(self) -> Self

🔬This is a nightly-only experimental API. (portable_simd)

Returns the number of trailing ones in the binary representation of each element.

Dyn Compatibility§

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementors§