# SIMD Implementations ## Topics ### Operators [`static func .!= (Self.Scalar, Self) -> SIMDMask`](/documentation/Swift/SIMDMask/.!=(_:_:)-4o6ac) Returns a vector mask with the result of a pointwise inequality comparison. [`static func .!= (Self, Self) -> SIMDMask`](/documentation/Swift/SIMDMask/.!=(_:_:)-5cnom) A vector mask with the result of a pointwise inequality comparison. [`static func .!= (Self, Self.Scalar) -> SIMDMask`](/documentation/Swift/SIMDMask/.!=(_:_:)-94n12) Returns a vector mask with the result of a pointwise inequality comparison. [`static func .== (Self.Scalar, Self) -> SIMDMask`](/documentation/Swift/SIMDMask/.==(_:_:)-4l749) Returns a vector mask with the result of a pointwise equality comparison. [`static func .== (Self, Self.Scalar) -> SIMDMask`](/documentation/Swift/SIMDMask/.==(_:_:)-6aq3z) Returns a vector mask with the result of a pointwise equality comparison. [`static func .== (Self, Self) -> SIMDMask`](/documentation/Swift/SIMDMask/.==(_:_:)-8vdyh) A vector mask with the result of a pointwise equality comparison. [`static func == (Self, Self) -> Bool`](/documentation/Swift/SIMDMask/==(_:_:)) Returns a Boolean value indicating whether two vectors are equal. ### Initializers [`init(S)`](/documentation/Swift/SIMDMask/init(_:)) Creates a vector from the given sequence. [`init(arrayLiteral: Self.Scalar...)`](/documentation/Swift/SIMDMask/init(arrayLiteral:)) Creates a vector from the specified elements. [`init(from: any Decoder) throws`](/documentation/Swift/SIMDMask/init(from:)) Creates a new vector by decoding scalars from the given decoder. [`init(repeating: Self.Scalar)`](/documentation/Swift/SIMDMask/init(repeating:)-5pwub) A vector with the specified scalar in all lanes. ### Instance Properties [`var description: String`](/documentation/Swift/SIMDMask/description) A textual description of the vector. [`var indices: Range`](/documentation/Swift/SIMDMask/indices) The valid indices for subscripting the vector. ### Instance Methods [`func encode(to: any Encoder) throws`](/documentation/Swift/SIMDMask/encode(to:)) Encodes the scalars of this vector into the given encoder in an unkeyed container. [`func hash(into: inout Hasher)`](/documentation/Swift/SIMDMask/hash(into:)) Hashes the elements of the vector using the given hasher. [`func replace(with: Self.Scalar, where: SIMDMask)`](/documentation/Swift/SIMDMask/replace(with:where:)-6wonx) Replaces elements of this vector with `other` in the lanes where `mask` is `true`. [`func replace(with: Self, where: SIMDMask)`](/documentation/Swift/SIMDMask/replace(with:where:)-7bhx) Replaces elements of this vector with elements of `other` in the lanes where `mask` is `true`. [`func replacing(with: Self, where: SIMDMask) -> Self`](/documentation/Swift/SIMDMask/replacing(with:where:)-2gka4) Returns a copy of this vector, with elements replaced by elements of `other` in the lanes where `mask` is `true`. [`func replacing(with: Self.Scalar, where: SIMDMask) -> Self`](/documentation/Swift/SIMDMask/replacing(with:where:)-3lyjl) Returns a copy of this vector, with elements `other` in the lanes where `mask` is `true`. --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)