# SIMD64 A vector of 64 scalar values. ``` @frozen struct SIMD64 where Scalar : SIMDScalar ``` ## Topics ### Operators [`static func &* (SIMD64, SIMD64) -> SIMD64`](/documentation/Swift/SIMD64/&*(_:_:)-1nies) The pointwise wrapping product of two vectors. [`static func &* (SIMD64, SIMD64) -> SIMD64`](/documentation/Swift/SIMD64/&*(_:_:)-260nd) The pointwise wrapping product of two vectors. [`static func &* (SIMD64, SIMD64) -> SIMD64`](/documentation/Swift/SIMD64/&*(_:_:)-2oono) The pointwise wrapping product of two vectors. [`static func &* (SIMD64, SIMD64) -> SIMD64`](/documentation/Swift/SIMD64/&*(_:_:)-4am5c) The pointwise wrapping product of two vectors. [`static func &* (SIMD64, SIMD64) -> SIMD64`](/documentation/Swift/SIMD64/&*(_:_:)-6fivz) The pointwise wrapping product of two vectors. [`static func &* (SIMD64, SIMD64) -> SIMD64`](/documentation/Swift/SIMD64/&*(_:_:)-6nevl) The pointwise wrapping product of two vectors. [`static func &* (SIMD64, SIMD64) -> SIMD64`](/documentation/Swift/SIMD64/&*(_:_:)-6z2gk) The pointwise wrapping product of two vectors. [`static func &* (SIMD64, SIMD64) -> SIMD64`](/documentation/Swift/SIMD64/&*(_:_:)-8axy6) The pointwise wrapping product of two vectors. [`static func &* (SIMD64, SIMD64) -> SIMD64`](/documentation/Swift/SIMD64/&*(_:_:)-8dfx8) The pointwise wrapping product of two vectors. [`static func &* (SIMD64, SIMD64) -> SIMD64`](/documentation/Swift/SIMD64/&*(_:_:)-8wirt) The pointwise wrapping product of two vectors. [`static func &*= (inout SIMD64, SIMD64)`](/documentation/Swift/SIMD64/&*=(_:_:)-15yd5) Updates the left hand side with the pointwise wrapping product of two vectors. [`static func &*= (inout SIMD64, SIMD64)`](/documentation/Swift/SIMD64/&*=(_:_:)-185kx) Updates the left hand side with the pointwise wrapping product of two vectors. [`static func &*= (inout SIMD64, SIMD64)`](/documentation/Swift/SIMD64/&*=(_:_:)-1adyr) Updates the left hand side with the pointwise wrapping product of two vectors. [`static func &*= (inout SIMD64, SIMD64)`](/documentation/Swift/SIMD64/&*=(_:_:)-1byil) Updates the left hand side with the pointwise wrapping product of two vectors. [`static func &*= (inout SIMD64, SIMD64)`](/documentation/Swift/SIMD64/&*=(_:_:)-36mll) Updates the left hand side with the pointwise wrapping product of two vectors. [`static func &*= (inout SIMD64, SIMD64)`](/documentation/Swift/SIMD64/&*=(_:_:)-3rg5d) Updates the left hand side with the pointwise wrapping product of two vectors. [`static func &*= (inout SIMD64, SIMD64)`](/documentation/Swift/SIMD64/&*=(_:_:)-4oi76) Updates the left hand side with the pointwise wrapping product of two vectors. [`static func &*= (inout SIMD64, SIMD64)`](/documentation/Swift/SIMD64/&*=(_:_:)-769qv) Updates the left hand side with the pointwise wrapping product of two vectors. [`static func &*= (inout SIMD64, SIMD64)`](/documentation/Swift/SIMD64/&*=(_:_:)-ka55) Updates the left hand side with the pointwise wrapping product of two vectors. [`static func &*= (inout SIMD64, SIMD64)`](/documentation/Swift/SIMD64/&*=(_:_:)-xy7u) Updates the left hand side with the pointwise wrapping product of two vectors. [`static func &+ (SIMD64, SIMD64) -> SIMD64`](/documentation/Swift/SIMD64/&+(_:_:)-2ufe6) The wrapping sum of two vectors. [`static func &+ (SIMD64, SIMD64) -> SIMD64`](/documentation/Swift/SIMD64/&+(_:_:)-35gh4) The wrapping sum of two vectors. [`static func &+ (SIMD64, SIMD64) -> SIMD64`](/documentation/Swift/SIMD64/&+(_:_:)-3elq5) The wrapping sum of two vectors. [`static func &+ (SIMD64, SIMD64) -> SIMD64`](/documentation/Swift/SIMD64/&+(_:_:)-40abu) The wrapping sum of two vectors. [`static func &+ (SIMD64, SIMD64) -> SIMD64`](/documentation/Swift/SIMD64/&+(_:_:)-4h7n) The wrapping sum of two vectors. [`static func &+ (SIMD64, SIMD64) -> SIMD64`](/documentation/Swift/SIMD64/&+(_:_:)-4iw8o) The wrapping sum of two vectors. [`static func &+ (SIMD64, SIMD64) -> SIMD64`](/documentation/Swift/SIMD64/&+(_:_:)-58udo) The wrapping sum of two vectors. [`static func &+ (SIMD64, SIMD64) -> SIMD64`](/documentation/Swift/SIMD64/&+(_:_:)-7lqu0) The wrapping sum of two vectors. [`static func &+ (SIMD64, SIMD64) -> SIMD64`](/documentation/Swift/SIMD64/&+(_:_:)-854q6) The wrapping sum of two vectors. [`static func &+ (SIMD64, SIMD64) -> SIMD64`](/documentation/Swift/SIMD64/&+(_:_:)-yx3k) The wrapping sum of two vectors. [`static func &+= (inout SIMD64, SIMD64)`](/documentation/Swift/SIMD64/&+=(_:_:)-1m6vg) Updates the left hand side with the wrapping sum of the two vectors. [`static func &+= (inout SIMD64, SIMD64)`](/documentation/Swift/SIMD64/&+=(_:_:)-31s20) Updates the left hand side with the wrapping sum of the two vectors. [`static func &+= (inout SIMD64, SIMD64)`](/documentation/Swift/SIMD64/&+=(_:_:)-3dasm) Updates the left hand side with the wrapping sum of the two vectors. [`static func &+= (inout SIMD64, SIMD64)`](/documentation/Swift/SIMD64/&+=(_:_:)-43iwb) Updates the left hand side with the wrapping sum of the two vectors. [`static func &+= (inout SIMD64, SIMD64)`](/documentation/Swift/SIMD64/&+=(_:_:)-4t7or) Updates the left hand side with the wrapping sum of the two vectors. [`static func &+= (inout SIMD64, SIMD64)`](/documentation/Swift/SIMD64/&+=(_:_:)-56h8p) Updates the left hand side with the wrapping sum of the two vectors. [`static func &+= (inout SIMD64, SIMD64)`](/documentation/Swift/SIMD64/&+=(_:_:)-7wsxv) Updates the left hand side with the wrapping sum of the two vectors. [`static func &+= (inout SIMD64, SIMD64)`](/documentation/Swift/SIMD64/&+=(_:_:)-94lfa) Updates the left hand side with the wrapping sum of the two vectors. [`static func &+= (inout SIMD64, SIMD64)`](/documentation/Swift/SIMD64/&+=(_:_:)-9kwf1) Updates the left hand side with the wrapping sum of the two vectors. [`static func &+= (inout SIMD64, SIMD64)`](/documentation/Swift/SIMD64/&+=(_:_:)-9oeon) Updates the left hand side with the wrapping sum of the two vectors. [`static func &- (SIMD64, SIMD64) -> SIMD64`](/documentation/Swift/SIMD64/&-(_:_:)-11gz6) The wrapping difference of two vectors. [`static func &- (SIMD64, SIMD64) -> SIMD64`](/documentation/Swift/SIMD64/&-(_:_:)-5v387) The wrapping difference of two vectors. [`static func &- (SIMD64, SIMD64) -> SIMD64`](/documentation/Swift/SIMD64/&-(_:_:)-646vl) The wrapping difference of two vectors. [`static func &- (SIMD64, SIMD64) -> SIMD64`](/documentation/Swift/SIMD64/&-(_:_:)-6c1vz) The wrapping difference of two vectors. [`static func &- (SIMD64, SIMD64) -> SIMD64`](/documentation/Swift/SIMD64/&-(_:_:)-6ew72) The wrapping difference of two vectors. [`static func &- (SIMD64, SIMD64) -> SIMD64`](/documentation/Swift/SIMD64/&-(_:_:)-6qahe) The wrapping difference of two vectors. [`static func &- (SIMD64, SIMD64) -> SIMD64`](/documentation/Swift/SIMD64/&-(_:_:)-81ued) The wrapping difference of two vectors. [`static func &- (SIMD64, SIMD64) -> SIMD64`](/documentation/Swift/SIMD64/&-(_:_:)-8xf3r) The wrapping difference of two vectors. [`static func &- (SIMD64, SIMD64) -> SIMD64`](/documentation/Swift/SIMD64/&-(_:_:)-8z1z3) The wrapping difference of two vectors. [`static func &- (SIMD64, SIMD64) -> SIMD64`](/documentation/Swift/SIMD64/&-(_:_:)-99873) The wrapping difference of two vectors. [`static func &-= (inout SIMD64, SIMD64)`](/documentation/Swift/SIMD64/&-=(_:_:)-16i05) Updates the left hand side with the wrapping difference of the two vectors. [`static func &-= (inout SIMD64, SIMD64)`](/documentation/Swift/SIMD64/&-=(_:_:)-30fsn) Updates the left hand side with the wrapping difference of the two vectors. [`static func &-= (inout SIMD64, SIMD64)`](/documentation/Swift/SIMD64/&-=(_:_:)-3h8zf) Updates the left hand side with the wrapping difference of the two vectors. [`static func &-= (inout SIMD64, SIMD64)`](/documentation/Swift/SIMD64/&-=(_:_:)-3laqf) Updates the left hand side with the wrapping difference of the two vectors. [`static func &-= (inout SIMD64, SIMD64)`](/documentation/Swift/SIMD64/&-=(_:_:)-41le9) Updates the left hand side with the wrapping difference of the two vectors. [`static func &-= (inout SIMD64, SIMD64)`](/documentation/Swift/SIMD64/&-=(_:_:)-5omju) Updates the left hand side with the wrapping difference of the two vectors. [`static func &-= (inout SIMD64, SIMD64)`](/documentation/Swift/SIMD64/&-=(_:_:)-87aow) Updates the left hand side with the wrapping difference of the two vectors. [`static func &-= (inout SIMD64, SIMD64)`](/documentation/Swift/SIMD64/&-=(_:_:)-8b2t3) Updates the left hand side with the wrapping difference of the two vectors. [`static func &-= (inout SIMD64, SIMD64)`](/documentation/Swift/SIMD64/&-=(_:_:)-8bxz5) Updates the left hand side with the wrapping difference of the two vectors. [`static func &-= (inout SIMD64, SIMD64)`](/documentation/Swift/SIMD64/&-=(_:_:)-9ivxf) Updates the left hand side with the wrapping difference of the two vectors. [`static func .!= (SIMD64, SIMD64) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/.!=(_:_:)-1672o) A vector mask with the result of a pointwise inequality comparison. [`static func .!= (SIMD64, SIMD64) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/.!=(_:_:)-1psmc) Pointwise compare not equal to. [`static func .!= (SIMD64, SIMD64) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/.!=(_:_:)-23qev) A vector mask with the result of a pointwise inequality comparison. [`static func .!= (Scalar, SIMD64) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/.!=(_:_:)-2jo15) Pointwise compare not equal to. [`static func .!= (SIMD64, SIMD64) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/.!=(_:_:)-2nnb6) A vector mask with the result of a pointwise inequality comparison. [`static func .!= (Scalar, SIMD64) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/.!=(_:_:)-2pyma) Pointwise compare not equal to. [`static func .!= (SIMD64, Scalar) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/.!=(_:_:)-470qi) Pointwise compare not equal to. [`static func .!= (SIMD64, SIMD64) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/.!=(_:_:)-4cif7) A vector mask with the result of a pointwise inequality comparison. [`static func .!= (SIMD64, Scalar) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/.!=(_:_:)-57ivo) Pointwise compare not equal to. [`static func .!= (SIMD64, SIMD64) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/.!=(_:_:)-58qz7) Pointwise compare not equal to. [`static func .!= (Scalar, SIMD64) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/.!=(_:_:)-5g7na) Pointwise compare not equal to. [`static func .!= (SIMD64, SIMD64) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/.!=(_:_:)-62b8a) A vector mask with the result of a pointwise inequality comparison. [`static func .!= (SIMD64, SIMD64) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/.!=(_:_:)-7sndj) A vector mask with the result of a pointwise inequality comparison. [`static func .!= (SIMD64, SIMD64) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/.!=(_:_:)-7ty32) A vector mask with the result of a pointwise inequality comparison. [`static func .!= (SIMD64, Scalar) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/.!=(_:_:)-7wxw6) Pointwise compare not equal to. [`static func .!= (SIMD64, SIMD64) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/.!=(_:_:)-85lqf) A vector mask with the result of a pointwise inequality comparison. [`static func .!= (SIMD64, SIMD64) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/.!=(_:_:)-8y7s9) A vector mask with the result of a pointwise inequality comparison. [`static func .!= (SIMD64, SIMD64) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/.!=(_:_:)-99wn9) Pointwise compare not equal to. [`static func .!= (SIMD64, SIMD64) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/.!=(_:_:)-cwhd) A vector mask with the result of a pointwise inequality comparison. [`static func .== (SIMD64, SIMD64) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/.==(_:_:)-1565o) A vector mask with the result of a pointwise equality comparison. [`static func .== (SIMD64, SIMD64) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/.==(_:_:)-1a4ze) A vector mask with the result of a pointwise equality comparison. [`static func .== (SIMD64, SIMD64) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/.==(_:_:)-1wwna) A vector mask with the result of a pointwise equality comparison. [`static func .== (Scalar, SIMD64) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/.==(_:_:)-2zdet) Pointwise compare equal to. [`static func .== (SIMD64, SIMD64) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/.==(_:_:)-313pg) A vector mask with the result of a pointwise equality comparison. [`static func .== (SIMD64, SIMD64) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/.==(_:_:)-4azos) Pointwise compare equal to. [`static func .== (SIMD64, SIMD64) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/.==(_:_:)-4dxcu) Pointwise compare equal to. [`static func .== (SIMD64, SIMD64) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/.==(_:_:)-4ia29) A vector mask with the result of a pointwise equality comparison. [`static func .== (SIMD64, Scalar) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/.==(_:_:)-4lizh) Pointwise compare equal to. [`static func .== (SIMD64, SIMD64) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/.==(_:_:)-5lj8z) A vector mask with the result of a pointwise equality comparison. [`static func .== (SIMD64, SIMD64) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/.==(_:_:)-7ezg9) Pointwise compare equal to. [`static func .== (Scalar, SIMD64) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/.==(_:_:)-7ksx6) Pointwise compare equal to. [`static func .== (SIMD64, SIMD64) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/.==(_:_:)-7n5dw) A vector mask with the result of a pointwise equality comparison. [`static func .== (SIMD64, SIMD64) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/.==(_:_:)-83u9i) A vector mask with the result of a pointwise equality comparison. [`static func .== (SIMD64, Scalar) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/.==(_:_:)-8hf5d) Pointwise compare equal to. [`static func .== (SIMD64, SIMD64) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/.==(_:_:)-8j9ds) A vector mask with the result of a pointwise equality comparison. [`static func .== (SIMD64, SIMD64) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/.==(_:_:)-8s6tq) A vector mask with the result of a pointwise equality comparison. [`static func .== (SIMD64, Scalar) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/.==(_:_:)-9d2d9) Pointwise compare equal to. [`static func .== (Scalar, SIMD64) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/.==(_:_:)-z33t) Pointwise compare equal to. [`static func .< (SIMD64, SIMD64) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/._(_:_:)-177uc) A vector mask with the result of a pointwise less-than comparison. [`static func .> (SIMD64, SIMD64) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/._(_:_:)-1lb5o) Pointwise compare greater than. [`static func .> (SIMD64, SIMD64) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/._(_:_:)-1pb6p) A vector mask with the result of a pointwise greater-than comparison. [`static func .> (SIMD64, Scalar) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/._(_:_:)-2biz4) Pointwise compare greater than. [`static func .> (SIMD64, SIMD64) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/._(_:_:)-2czkl) A vector mask with the result of a pointwise greater-than comparison. [`static func .< (SIMD64, Scalar) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/._(_:_:)-2dddq) Pointwise compare less than. [`static func .< (SIMD64, SIMD64) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/._(_:_:)-2rxgt) A vector mask with the result of a pointwise less-than comparison. [`static func .< (SIMD64, SIMD64) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/._(_:_:)-3089u) A vector mask with the result of a pointwise less-than comparison. [`static func .> (SIMD64, SIMD64) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/._(_:_:)-33rfj) A vector mask with the result of a pointwise greater-than comparison. [`static func .< (Scalar, SIMD64) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/._(_:_:)-35ys) Pointwise compare less than. [`static func .< (SIMD64, SIMD64) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/._(_:_:)-3csxk) A vector mask with the result of a pointwise less-than comparison. [`static func .> (SIMD64, Scalar) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/._(_:_:)-3ep9p) Pointwise compare greater than. [`static func .< (SIMD64, SIMD64) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/._(_:_:)-3h8j0) A vector mask with the result of a pointwise less-than comparison. [`static func .< (SIMD64, Scalar) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/._(_:_:)-3v7zi) Pointwise compare less than. [`static func .> (SIMD64, SIMD64) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/._(_:_:)-3w5c8) Pointwise compare greater than. [`static func .< (SIMD64, SIMD64) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/._(_:_:)-43x9l) A vector mask with the result of a pointwise less-than comparison. [`static func .< (SIMD64, SIMD64) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/._(_:_:)-4bi1l) A vector mask with the result of a pointwise less-than comparison. [`static func .> (SIMD64, SIMD64) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/._(_:_:)-4kmka) A vector mask with the result of a pointwise greater-than comparison. [`static func .> (SIMD64, Scalar) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/._(_:_:)-4v53j) Pointwise compare greater than. [`static func .> (SIMD64, SIMD64) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/._(_:_:)-54oza) A vector mask with the result of a pointwise greater-than comparison. [`static func .> (SIMD64, SIMD64) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/._(_:_:)-5xqjv) A vector mask with the result of a pointwise greater-than comparison. [`static func .< (SIMD64, SIMD64) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/._(_:_:)-66auz) Pointwise compare less than. [`static func .> (SIMD64, SIMD64) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/._(_:_:)-6nyvk) A vector mask with the result of a pointwise greater-than comparison. [`static func .> (Scalar, SIMD64) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/._(_:_:)-6vgju) Pointwise compare greater than. [`static func .< (SIMD64, SIMD64) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/._(_:_:)-708u) Pointwise compare less than. [`static func .< (Scalar, SIMD64) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/._(_:_:)-73coq) Pointwise compare less than. [`static func .< (Scalar, SIMD64) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/._(_:_:)-7eaio) Pointwise compare less than. [`static func .< (SIMD64, SIMD64) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/._(_:_:)-89gyk) Pointwise compare less than. [`static func .> (SIMD64, SIMD64) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/._(_:_:)-8apvk) A vector mask with the result of a pointwise greater-than comparison. [`static func .> (SIMD64, SIMD64) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/._(_:_:)-8ehoo) A vector mask with the result of a pointwise greater-than comparison. [`static func .< (SIMD64, Scalar) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/._(_:_:)-8fgby) Pointwise compare less than. [`static func .> (SIMD64, SIMD64) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/._(_:_:)-9hnxx) Pointwise compare greater than. [`static func .> (Scalar, SIMD64) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/._(_:_:)-9w6aa) Pointwise compare greater than. [`static func .> (SIMD64, SIMD64) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/._(_:_:)-9zaun) A vector mask with the result of a pointwise greater-than comparison. [`static func .> (Scalar, SIMD64) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/._(_:_:)-k2j) Pointwise compare greater than. [`static func .< (SIMD64, SIMD64) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/._(_:_:)-nt6n) A vector mask with the result of a pointwise less-than comparison. [`static func .< (SIMD64, SIMD64) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/._(_:_:)-p4ho) A vector mask with the result of a pointwise less-than comparison. [`static func .< (SIMD64, SIMD64) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/._(_:_:)-yg07) A vector mask with the result of a pointwise less-than comparison. [`static func .<= (SIMD64, Scalar) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/._=(_:_:)-1901x) Pointwise compare less than or equal to. [`static func .>= (SIMD64, Scalar) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/._=(_:_:)-1ahdu) Pointwise compare greater than or equal to. [`static func .>= (Scalar, SIMD64) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/._=(_:_:)-1dsbz) Pointwise compare greater than or equal to. [`static func .<= (SIMD64, SIMD64) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/._=(_:_:)-1t539) A vector mask with the result of a pointwise less-than-or-equal-to comparison. [`static func .>= (SIMD64, Scalar) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/._=(_:_:)-1vb8h) Pointwise compare greater than or equal to. [`static func .>= (SIMD64, SIMD64) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/._=(_:_:)-1yb7n) A vector mask with the result of a pointwise greater-than-or-equal-to comparison. [`static func .<= (SIMD64, SIMD64) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/._=(_:_:)-28lr6) A vector mask with the result of a pointwise less-than-or-equal-to comparison. [`static func .<= (SIMD64, SIMD64) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/._=(_:_:)-29f23) Pointwise compare less than or equal to. [`static func .<= (SIMD64, SIMD64) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/._=(_:_:)-2h2qx) A vector mask with the result of a pointwise less-than-or-equal-to comparison. [`static func .>= (SIMD64, SIMD64) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/._=(_:_:)-2jrjk) Pointwise compare greater than or equal to. [`static func .<= (SIMD64, SIMD64) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/._=(_:_:)-2virz) A vector mask with the result of a pointwise less-than-or-equal-to comparison. [`static func .>= (SIMD64, SIMD64) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/._=(_:_:)-30ji0) A vector mask with the result of a pointwise greater-than-or-equal-to comparison. [`static func .<= (SIMD64, SIMD64) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/._=(_:_:)-3nuyj) A vector mask with the result of a pointwise less-than-or-equal-to comparison. [`static func .<= (SIMD64, SIMD64) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/._=(_:_:)-4f8ww) A vector mask with the result of a pointwise less-than-or-equal-to comparison. [`static func .>= (SIMD64, SIMD64) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/._=(_:_:)-52vxo) A vector mask with the result of a pointwise greater-than-or-equal-to comparison. [`static func .>= (SIMD64, Scalar) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/._=(_:_:)-53ml4) Pointwise compare greater than or equal to. [`static func .<= (Scalar, SIMD64) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/._=(_:_:)-59hvt) Pointwise compare less than or equal to. [`static func .<= (SIMD64, Scalar) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/._=(_:_:)-59rir) Pointwise compare less than or equal to. [`static func .<= (SIMD64, SIMD64) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/._=(_:_:)-5t9td) A vector mask with the result of a pointwise less-than-or-equal-to comparison. [`static func .<= (Scalar, SIMD64) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/._=(_:_:)-5u1ld) Pointwise compare less than or equal to. [`static func .>= (SIMD64, SIMD64) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/._=(_:_:)-5v8f7) A vector mask with the result of a pointwise greater-than-or-equal-to comparison. [`static func .>= (SIMD64, SIMD64) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/._=(_:_:)-61408) Pointwise compare greater than or equal to. [`static func .<= (SIMD64, SIMD64) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/._=(_:_:)-645sj) A vector mask with the result of a pointwise less-than-or-equal-to comparison. [`static func .>= (SIMD64, SIMD64) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/._=(_:_:)-656yo) A vector mask with the result of a pointwise greater-than-or-equal-to comparison. [`static func .<= (SIMD64, SIMD64) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/._=(_:_:)-6ab1t) Pointwise compare less than or equal to. [`static func .<= (Scalar, SIMD64) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/._=(_:_:)-6cjfh) Pointwise compare less than or equal to. [`static func .>= (SIMD64, SIMD64) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/._=(_:_:)-6i9kd) A vector mask with the result of a pointwise greater-than-or-equal-to comparison. [`static func .>= (SIMD64, SIMD64) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/._=(_:_:)-736a3) A vector mask with the result of a pointwise greater-than-or-equal-to comparison. [`static func .>= (Scalar, SIMD64) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/._=(_:_:)-7df2n) Pointwise compare greater than or equal to. [`static func .>= (Scalar, SIMD64) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/._=(_:_:)-7uivb) Pointwise compare greater than or equal to. [`static func .>= (SIMD64, SIMD64) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/._=(_:_:)-862yz) Pointwise compare greater than or equal to. [`static func .<= (SIMD64, SIMD64) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/._=(_:_:)-887zi) A vector mask with the result of a pointwise less-than-or-equal-to comparison. [`static func .<= (SIMD64, SIMD64) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/._=(_:_:)-9llhj) A vector mask with the result of a pointwise less-than-or-equal-to comparison. [`static func .>= (SIMD64, SIMD64) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/._=(_:_:)-9qnjw) A vector mask with the result of a pointwise greater-than-or-equal-to comparison. [`static func .>= (SIMD64, SIMD64) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/._=(_:_:)-9shgf) A vector mask with the result of a pointwise greater-than-or-equal-to comparison. [`static func .<= (SIMD64, Scalar) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/._=(_:_:)-9vrgx) Pointwise compare less than or equal to. [`static func .>= (SIMD64, SIMD64) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/._=(_:_:)-9z4fl) A vector mask with the result of a pointwise greater-than-or-equal-to comparison. [`static func .<= (SIMD64, SIMD64) -> SIMDMask.MaskStorage>`](/documentation/Swift/SIMD64/._=(_:_:)-xdbb) Pointwise compare less than or equal to. ### Initializers [`init()`](/documentation/Swift/SIMD64/init()) Creates a vector with zero in all lanes. [`init(SIMD64)`](/documentation/Swift/SIMD64/init(_:)-1i716) Creates a new vector from the given vector of floating-point values. [`init(SIMD64)`](/documentation/Swift/SIMD64/init(_:)-1ogvd) Creates a new vector from the given vector of integers. [`init(Scalar, Scalar, Scalar, Scalar, Scalar, Scalar, Scalar, Scalar, Scalar, Scalar, Scalar, Scalar, Scalar, Scalar, Scalar, Scalar, Scalar, Scalar, Scalar, Scalar, Scalar, Scalar, Scalar, Scalar, Scalar, Scalar, Scalar, Scalar, Scalar, Scalar, Scalar, Scalar, Scalar, Scalar, Scalar, Scalar, Scalar, Scalar, Scalar, Scalar, Scalar, Scalar, Scalar, Scalar, Scalar, Scalar, Scalar, Scalar, Scalar, Scalar, Scalar, Scalar, Scalar, Scalar, Scalar, Scalar, Scalar, Scalar, Scalar, Scalar, Scalar, Scalar, Scalar, Scalar)`](/documentation/Swift/SIMD64/init(_:_:_:_:_:_:_:_:_:_:_:_:_:_:_:_:_:_:_:_:_:_:_:_:_:_:_:_:_:_:_:_:_:_:_:_:_:_:_:_:_:_:_:_:_:_:_:_:_:_:_:_:_:_:_:_:_:_:_:_:_:_:_:_:)) Creates a new vector from the given elements. [`init(SIMD64, rounding: FloatingPointRoundingRule)`](/documentation/Swift/SIMD64/init(_:rounding:)) Creates a new vector from the given vector, rounding the given vector’s of elements using the specified rounding rule. [`init(clamping: SIMD64)`](/documentation/Swift/SIMD64/init(clamping:)) Creates a new vector from the given vector, clamping the values of the given vector’s elements if necessary. [`init(lowHalf: SIMD32, highHalf: SIMD32)`](/documentation/Swift/SIMD64/init(lowHalf:highHalf:)-1trg7) A vector formed by concatenating lowHalf and highHalf. [`init(lowHalf: SIMD32, highHalf: SIMD32)`](/documentation/Swift/SIMD64/init(lowHalf:highHalf:)-28ffo) A vector formed by concatenating lowHalf and highHalf. [`init(lowHalf: SIMD32, highHalf: SIMD32)`](/documentation/Swift/SIMD64/init(lowHalf:highHalf:)-2xbxv) A vector formed by concatenating lowHalf and highHalf. [`init(lowHalf: SIMD32, highHalf: SIMD32)`](/documentation/Swift/SIMD64/init(lowHalf:highHalf:)-6eaf6) A vector formed by concatenating lowHalf and highHalf. [`init(lowHalf: SIMD32, highHalf: SIMD32)`](/documentation/Swift/SIMD64/init(lowHalf:highHalf:)-6m61v) A vector formed by concatenating lowHalf and highHalf. [`init(lowHalf: SIMD32, highHalf: SIMD32)`](/documentation/Swift/SIMD64/init(lowHalf:highHalf:)-6op80) A vector formed by concatenating lowHalf and highHalf. [`init(lowHalf: SIMD32, highHalf: SIMD32)`](/documentation/Swift/SIMD64/init(lowHalf:highHalf:)-7a8xd) A vector formed by concatenating lowHalf and highHalf. [`init(lowHalf: SIMD32, highHalf: SIMD32)`](/documentation/Swift/SIMD64/init(lowHalf:highHalf:)-7eekb) A vector formed by concatenating lowHalf and highHalf. [`init(lowHalf: SIMD32, highHalf: SIMD32)`](/documentation/Swift/SIMD64/init(lowHalf:highHalf:)-7qmjs) A vector formed by concatenating lowHalf and highHalf. [`init(lowHalf: SIMD32, highHalf: SIMD32)`](/documentation/Swift/SIMD64/init(lowHalf:highHalf:)-7znin) A vector formed by concatenating lowHalf and highHalf. [`init(lowHalf: SIMD32, highHalf: SIMD32)`](/documentation/Swift/SIMD64/init(lowHalf:highHalf:)-8g6uw) A vector formed by concatenating lowHalf and highHalf. [`init(lowHalf: SIMD32, highHalf: SIMD32)`](/documentation/Swift/SIMD64/init(lowHalf:highHalf:)-8m9fq) A vector formed by concatenating lowHalf and highHalf. [`init(lowHalf: SIMD32, highHalf: SIMD32)`](/documentation/Swift/SIMD64/init(lowHalf:highHalf:)-8v8h3) A vector formed by concatenating lowHalf and highHalf. [`init(lowHalf: SIMD32, highHalf: SIMD32)`](/documentation/Swift/SIMD64/init(lowHalf:highHalf:)-9eket) A vector formed by concatenating lowHalf and highHalf. [`init(repeating: UInt64)`](/documentation/Swift/SIMD64/init(repeating:)-14iv3) A vector with the specified scalar in all lanes. [`init(repeating: UInt16)`](/documentation/Swift/SIMD64/init(repeating:)-1k04p) A vector with the specified scalar in all lanes. [`init(repeating: Int16)`](/documentation/Swift/SIMD64/init(repeating:)-1oiya) A vector with the specified scalar in all lanes. [`init(repeating: Int32)`](/documentation/Swift/SIMD64/init(repeating:)-205cx) A vector with the specified scalar in all lanes. [`init(repeating: UInt32)`](/documentation/Swift/SIMD64/init(repeating:)-3wxg7) A vector with the specified scalar in all lanes. [`init(repeating: Float16)`](/documentation/Swift/SIMD64/init(repeating:)-4ebdx) A vector with the specified scalar in all lanes. [`init(repeating: Int)`](/documentation/Swift/SIMD64/init(repeating:)-6v9hc) A vector with the specified scalar in all lanes. [`init(repeating: Float)`](/documentation/Swift/SIMD64/init(repeating:)-86hc) A vector with the specified scalar in all lanes. [`init(repeating: Int8)`](/documentation/Swift/SIMD64/init(repeating:)-8fb17) A vector with the specified scalar in all lanes. [`init(repeating: Double)`](/documentation/Swift/SIMD64/init(repeating:)-92lq0) A vector with the specified scalar in all lanes. [`init(repeating: UInt8)`](/documentation/Swift/SIMD64/init(repeating:)-aen4) A vector with the specified scalar in all lanes. [`init(repeating: Int64)`](/documentation/Swift/SIMD64/init(repeating:)-fq9s) A vector with the specified scalar in all lanes. [`init(repeating: UInt)`](/documentation/Swift/SIMD64/init(repeating:)-ylnh) A vector with the specified scalar in all lanes. [`init(truncatingIfNeeded: SIMD64)`](/documentation/Swift/SIMD64/init(truncatingIfNeeded:)) Creates a new vector from the given vector, truncating the bit patterns of the given vector’s elements if necessary. ### Instance Properties [`var evenHalf: SIMD32`](/documentation/Swift/SIMD64/evenHalf) A half-length vector made up of the even elements of the vector. [`var hashValue: Int`](/documentation/Swift/SIMD64/hashValue) The hash value. [`var highHalf: SIMD32`](/documentation/Swift/SIMD64/highHalf) A half-length vector made up of the high elements of the vector. [`var lowHalf: SIMD32`](/documentation/Swift/SIMD64/lowHalf) A half-length vector made up of the low elements of the vector. [`var oddHalf: SIMD32`](/documentation/Swift/SIMD64/oddHalf) A half-length vector made up of the odd elements of the vector. [`var scalarCount: Int`](/documentation/Swift/SIMD64/scalarCount) The number of scalars in the vector. ### Subscripts [`subscript(Int) -> Scalar`](/documentation/Swift/SIMD64/subscript(_:)) Accesses the scalar at the specified position. ### Type Aliases [`typealias ArrayLiteralElement`](/documentation/Swift/SIMD64/ArrayLiteralElement) The type of the elements of an array literal. [`typealias MaskStorage`](/documentation/Swift/SIMD64/MaskStorage) The mask type resulting from pointwise comparisons of this vector type. ### Default Implementations [CustomDebugStringConvertible Implementations](/documentation/Swift/SIMD64/CustomDebugStringConvertible-Implementations) [Equatable Implementations](/documentation/Swift/SIMD64/Equatable-Implementations) [SIMD Implementations](/documentation/Swift/SIMD64/SIMD-Implementations) ## Relationships ### Conforms To [`BitwiseCopyable`](/documentation/Swift/BitwiseCopyable) [`Copyable`](/documentation/Swift/Copyable) [`CustomStringConvertible`](/documentation/Swift/CustomStringConvertible) [`SendableMetatype`](/documentation/Swift/SendableMetatype) [`Equatable`](/documentation/Swift/Equatable) [`ExpressibleByArrayLiteral`](/documentation/Swift/ExpressibleByArrayLiteral) [`Hashable`](/documentation/Swift/Hashable) [`ConvertibleFromBytes`](/documentation/Swift/ConvertibleFromBytes) [`Encodable`](/documentation/Swift/Encodable) [`SIMD`](/documentation/Swift/SIMD) [`Decodable`](/documentation/Swift/Decodable) [`Sendable`](/documentation/Swift/Sendable) [`CustomDebugStringConvertible`](/documentation/Swift/CustomDebugStringConvertible) [`ConvertibleToBytes`](/documentation/Swift/ConvertibleToBytes) [`SIMDStorage`](/documentation/Swift/SIMDStorage) [`Escapable`](/documentation/Swift/Escapable) --- Copyright © 2026 Apple Inc. 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