# simd_uint8 A vector of eight 32-bit unsigned integer elements. ``` typealias simd_uint8 = SIMD8 ``` ## Topics ### Functions to Create Eight-Element Vectors From Other Vectors [`simd_make_uint8(_:)`](/documentation/simd/simd_make_uint8(_:)-2vaoh) Returns a new vector from the specified two-element vector, and other elements set to zero. [`simd_make_uint8(_:)`](/documentation/simd/simd_make_uint8(_:)-2rtxs) Returns a new vector from the specified three-element vector, and other elements set to zero. [`simd_make_uint8(_:)`](/documentation/simd/simd_make_uint8(_:)-2ovzr) Returns a new vector from the specified four-element vector, and other elements set to zero. [`simd_make_uint8(_:)`](/documentation/simd/simd_make_uint8(_:)-3sztf) Returns a new vector from the specified vector. [`simd_make_uint8(_:)`](/documentation/simd/simd_make_uint8(_:)-64gkj) Returns a new vector by truncating the specified sixteen-element vector. [`simd_make_uint8(_:_:)`](/documentation/simd/simd_make_uint8(_:_:)) Returns a new vector from the specified vectors. [`vector8`](/documentation/simd/vector8-2a1px) Returns a new vector from the specified vectors. [`simd_make_uint8_undef(_:)`](/documentation/simd/simd_make_uint8_undef(_:)-ck1m) Returns a new vector from the specified two-element vector, and other elements undefined. [`simd_make_uint8_undef(_:)`](/documentation/simd/simd_make_uint8_undef(_:)-hojv) Returns a new vector from the specified three-element vector, and other elements undefined. [`simd_make_uint8_undef(_:)`](/documentation/simd/simd_make_uint8_undef(_:)-6a8k) Returns a new vector from the specified four-element vector, and other elements undefined. ### Functions to Create Eight-Element Vectors From Scalar Values [`simd_make_uint8(_:)`](/documentation/simd/simd_make_uint8(_:)-7jqj3) Returns a new vector with the first element set to a scalar value, and other elements set to zero. [`simd_make_uint8_undef(_:)`](/documentation/simd/simd_make_uint8_undef(_:)-8p5i8) Returns a new vector with the first element set to a scalar value, and other elements undefined. ### Functions to Create Eight-Element Vectors From Vectors of Other Types [`simd_uint`](/documentation/simd/simd_uint-8dih8) Returns a new vector from the specified vector of 8-bit, signed integer elements. [`simd_uint`](/documentation/simd/simd_uint-8ds98) Returns a new vector from the specified vector of 8-bit, unsigned integer elements. [`simd_uint`](/documentation/simd/simd_uint-8ddf0) Returns a new vector from the specified vector of 16-bit, signed integer elements. [`simd_uint`](/documentation/simd/simd_uint-8dncc) Returns a new vector from the specified vector of 16-bit, unsigned integer elements. [`simd_uint`](/documentation/simd/simd_uint-8dgmc) Returns a new vector from the specified vector of 32-bit, signed integer elements. [`simd_uint`](/documentation/simd/simd_uint-8dqg4) Returns a new vector from the specified vector of 32-bit, unsigned integer elements. [`simd_uint`](/documentation/simd/simd_uint-8dhgw) Returns a new vector from the specified vector of 64-bit, signed integer elements. [`simd_uint`](/documentation/simd/simd_uint-8drlc) Returns a new vector from the specified vector of 64-bit, unsigned integer elements. [`simd_uint`](/documentation/simd/simd_uint-8dt6o) Returns a new vector from the specified vector of 32-bit, floating-point elements. [`simd_uint`](/documentation/simd/simd_uint-8dtuo) Returns a new vector from the specified vector of 64-bit, floating-point elements. ### Functions to Perform Saturating Conversion From Vectors of Other Types [`simd_uint_sat`](/documentation/simd/simd_uint_sat-1bp92) Returns a new vector from the specified vector of 8-bit, signed integer elements. [`simd_uint_sat`](/documentation/simd/simd_uint_sat-1bf6e) Returns a new vector from the specified vector of 8-bit, unsigned integer elements. [`simd_uint_sat`](/documentation/simd/simd_uint_sat-1bu8m) Returns a new vector from the specified vector of 16-bit, signed integer elements. [`simd_uint_sat`](/documentation/simd/simd_uint_sat-1bk2e) Returns a new vector from the specified vector of 16-bit, unsigned integer elements. [`simd_uint_sat`](/documentation/simd/simd_uint_sat-1bs6i) Returns a new vector from the specified vector of 32-bit, signed integer elements. [`simd_uint_sat`](/documentation/simd/simd_uint_sat-1bi96) Returns a new vector from the specified vector of 32-bit, unsigned integer elements. [`simd_uint_sat`](/documentation/simd/simd_uint_sat-1brg2) Returns a new vector from the specified vector of 64-bit, signed integer elements. [`simd_uint_sat`](/documentation/simd/simd_uint_sat-1bhbm) Returns a new vector from the specified vector of 64-bit, unsigned integer elements. [`simd_uint_sat`](/documentation/simd/simd_uint_sat-1bebq) Returns a new vector from the specified vector of 32-bit, floating-point elements. [`simd_uint_sat`](/documentation/simd/simd_uint_sat-1bexu) Returns a new vector from the specified vector of 64-bit, floating-point elements. ### Common Functions [`simd_clamp(_:_:_:)`](/documentation/simd/simd_clamp(_:_:_:)-9evfi) Returns each element in a vector clamped to a specified range. [`simd_equal(_:_:)`](/documentation/simd/simd_equal(_:_:)-1v1wn) Returns true if every element in a vector is exactly equal to the corresponding element in a second vector, and otherwise returns false. ### Reduce Functions [`simd_reduce_min(_:)`](/documentation/simd/simd_reduce_min(_:)-3o9f6) Returns the miniumum value in a vector. [`simd_reduce_max(_:)`](/documentation/simd/simd_reduce_max(_:)-55ah6) Returns the maximum value in a vector. [`simd_reduce_add(_:)`](/documentation/simd/simd_reduce_add(_:)-3av90) Returns the sum of all elements in a vector. ### Extrema Functions [`simd_min(_:_:)`](/documentation/simd/simd_min(_:_:)-873mx) Returns the minimum value of each element in a vector. [`simd_max(_:_:)`](/documentation/simd/simd_max(_:_:)-4l2k6) Returns the maximum value of each element in a vector. ### Logic and Bitwise Functions [`simd_any(_:)`](/documentation/simd/simd_any(_:)-6p8mz) [`simd_all(_:)`](/documentation/simd/simd_all(_:)-1ynbd) [`simd_bitselect(_:_:_:)`](/documentation/simd/simd_bitselect(_:_:_:)-803fj) Returns a vector that contains elements from either the first or second parameter, based on the corresponding element in the third parameter. ### Alternative Type Alias [`vector_uint8`](/documentation/simd/vector_uint8) --- Copyright © 2026 Apple Inc. 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