# simd_ulong4 A vector of four 64-bit unsigned integer elements. ``` typealias simd_ulong4 = SIMD4 ``` ## Topics ### Functions to Create Four-Element Vectors From Other Vectors [`simd_make_ulong4(_:)`](/documentation/simd/simd_make_ulong4(_:)-364ux) Returns a new vector from the specified two-element vector, and other elements set to zero. [`simd_make_ulong4(_:)`](/documentation/simd/simd_make_ulong4(_:)-39may) Returns a new vector from the specified three-element vector, and other elements set to zero. [`simd_make_ulong4(_:)`](/documentation/simd/simd_make_ulong4(_:)-2zv2b) Returns a new vector from the specified vector. [`simd_make_ulong4(_:)`](/documentation/simd/simd_make_ulong4(_:)-43wof) Returns a new vector by truncating the specified eight-element vector. [`simd_make_ulong4(_:_:)`](/documentation/simd/simd_make_ulong4(_:_:)-9oy4u) Returns a new vector from the specified vectors. [`vector4`](/documentation/simd/vector4-9qgza) Returns a new vector from the specified vectors. [`simd_make_ulong4_undef(_:)`](/documentation/simd/simd_make_ulong4_undef(_:)-o0j) Returns a new vector from the specified two-element vector, and other elements undefined. [`simd_make_ulong4_undef(_:)`](/documentation/simd/simd_make_ulong4_undef(_:)-9xbtd) Returns a new vector from the specified three-element vector, and other elements undefined. ### Functions to Create Four-Element Vectors From Scalar Values [`simd_make_ulong4(_:)`](/documentation/simd/simd_make_ulong4(_:)-6kawu) Returns a new vector with the first element set to a scalar value, and other elements set to zero. [`simd_make_ulong4(_:_:_:_:)`](/documentation/simd/simd_make_ulong4(_:_:_:_:)) Returns a new vector from the specified scalar values. [`vector4`](/documentation/simd/vector4-8yxgu) Returns a new vector from the specified scalar values. [`simd_make_ulong4_undef(_:)`](/documentation/simd/simd_make_ulong4_undef(_:)-jgtr) Returns a new vector with the first element set to a scalar value, and other elements undefined. ### Functions to Create Four-Element Vectors From Combinations of Vectors and Scalar Values [`simd_make_ulong4(_:_:_:)`](/documentation/simd/simd_make_ulong4(_:_:_:)-4du2m) Returns a new vector from two scalar values and a vector. [`simd_make_ulong4(_:_:_:)`](/documentation/simd/simd_make_ulong4(_:_:_:)-8asm5) Returns a new vector from a scalar value, a vector, and a scalar value. [`simd_make_ulong4(_:_:)`](/documentation/simd/simd_make_ulong4(_:_:)-5mtth) Returns a new vector from a scalar value and a vector. [`simd_make_ulong4(_:_:_:)`](/documentation/simd/simd_make_ulong4(_:_:_:)-8g4ch) Returns a new vector from a vector and scalar values. [`simd_make_ulong4(_:_:)`](/documentation/simd/simd_make_ulong4(_:_:)-cnt3) Returns a new vector from a vector and a scalar value. [`vector4`](/documentation/simd/vector4-2st) Returns a new vector from a vector and a scalar value. ### Functions to Create Four-Element Vectors From Vectors of Other Types [`simd_ulong`](/documentation/simd/simd_ulong-1j7li) Returns a new vector from the specified vector of 8-bit, signed integer elements. [`simd_ulong`](/documentation/simd/simd_ulong-1ixkm) Returns a new vector from the specified vector of 8-bit, unsigned integer elements. [`simd_ulong`](/documentation/simd/simd_ulong-1jcja) Returns a new vector from the specified vector of 16-bit, signed integer elements. [`simd_ulong`](/documentation/simd/simd_ulong-1j2ly) Returns a new vector from the specified vector of 16-bit, unsigned integer elements. [`simd_ulong`](/documentation/simd/simd_ulong-1j9du) Returns a new vector from the specified vector of 32-bit, signed integer elements. [`simd_ulong`](/documentation/simd/simd_ulong-1izlu) Returns a new vector from the specified vector of 32-bit, unsigned integer elements. [`simd_ulong`](/documentation/simd/simd_ulong-1jazu) Returns a new vector from the specified vector of 32-bit, unsigned integer elements. [`simd_ulong`](/documentation/simd/simd_ulong-1j0ve) Returns a new vector from the specified vector of 64-bit, unsigned integer elements. [`simd_ulong`](/documentation/simd/simd_ulong-1iz4u) Returns a new vector from the specified vector of 32-bit, floating-point elements. [`simd_ulong`](/documentation/simd/simd_ulong-1iykq) 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_ulong_sat`](/documentation/simd/simd_ulong_sat-10sdw) Returns a new vector from the specified vector of 8-bit, signed integer elements. [`simd_ulong_sat`](/documentation/simd/simd_ulong_sat-112b8) Returns a new vector from the specified vector of 8-bit, unsigned integer elements. [`simd_ulong_sat`](/documentation/simd/simd_ulong_sat-10n78) Returns a new vector from the specified vector of 16-bit, signed integer elements. [`simd_ulong_sat`](/documentation/simd/simd_ulong_sat-10xbo) Returns a new vector from the specified vector of 16-bit, unsigned integer elements. [`simd_ulong_sat`](/documentation/simd/simd_ulong_sat-10p9o) Returns a new vector from the specified vector of 32-bit, signed integer elements. [`simd_ulong_sat`](/documentation/simd/simd_ulong_sat-10yzw) Returns a new vector from the specified vector of 32-bit, unsigned integer elements. [`simd_ulong_sat`](/documentation/simd/simd_ulong_sat-10pxs) Returns a new vector from the specified vector of 32-bit, unsigned integer elements. [`simd_ulong_sat`](/documentation/simd/simd_ulong_sat-11040) Returns a new vector from the specified vector of 64-bit, unsigned integer elements. [`simd_ulong_sat`](/documentation/simd/simd_ulong_sat-1137k) Returns a new vector from the specified vector of 32-bit, floating-point elements. [`simd_ulong_sat`](/documentation/simd/simd_ulong_sat-112e8) Returns a new vector from the specified vector of 64-bit, floating-point elements. ### Common Functions [`simd_clamp(_:_:_:)`](/documentation/simd/simd_clamp(_:_:_:)-5cuj3) Returns each element in a vector clamped to a specified range. [`simd_equal(_:_:)`](/documentation/simd/simd_equal(_:_:)-8d8x) 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(_:)-4ujwm) Returns the miniumum value in a vector. [`simd_reduce_max(_:)`](/documentation/simd/simd_reduce_max(_:)-4qsf2) Returns the maximum value in a vector. [`simd_reduce_add(_:)`](/documentation/simd/simd_reduce_add(_:)-2yjx0) Returns the sum of all elements in a vector. ### Extrema Functions [`simd_min(_:_:)`](/documentation/simd/simd_min(_:_:)-9meuw) Returns the minimum value of each element in a vector. [`simd_max(_:_:)`](/documentation/simd/simd_max(_:_:)-6x9fu) Returns the maximum value of each element in a vector. ### Logic and Bitwise Functions [`simd_any(_:)`](/documentation/simd/simd_any(_:)-6cxel) [`simd_all(_:)`](/documentation/simd/simd_all(_:)-1jlbv) [`simd_bitselect(_:_:_:)`](/documentation/simd/simd_bitselect(_:_:_:)-6gszc) 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_ulong4`](/documentation/simd/vector_ulong4) --- Copyright © 2026 Apple Inc. 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