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.

Object Safety§

This trait is not object safe.

Implementors§