# simd_long3 A vector of three 64-bit signed integer elements. ``` typealias simd_long3 = SIMD3 ``` ## Topics ### Functions to Create Three-Element Vectors From Other Vectors [`simd_make_long3(_:)`](/documentation/simd/simd_make_long3(_:)-4le1z) Returns a new vector from the specified two-element vector, and other elements set to zero. [`simd_make_long3(_:)`](/documentation/simd/simd_make_long3(_:)-4osz8) Returns a new vector from the specified vector. [`simd_make_long3(_:)`](/documentation/simd/simd_make_long3(_:)-40i9p) Returns a new vector by truncating the specified four-element vector. [`simd_make_long3(_:)`](/documentation/simd/simd_make_long3(_:)-567hd) Returns a new vector by truncating the specified eight-element vector. [`simd_make_long3_undef(_:)`](/documentation/simd/simd_make_long3_undef(_:)-8anf9) Returns a new vector from the specified two-element vector, and other elements undefined. ### Conversion to Signed 64-Bit (Round Half to Even) Functions [`simd_long_rte`](/documentation/simd/simd_long_rte-83sbc) Returns a new three-element vector by rounding halves to the nearest even value. ### Functions to Create Three-Element Vectors From Scalar Values [`simd_make_long3(_:)`](/documentation/simd/simd_make_long3(_:)-1n0vi) Returns a new vector with the first element set to a scalar value, and other elements set to zero. [`simd_make_long3(_:_:_:)`](/documentation/simd/simd_make_long3(_:_:_:)) Returns a new vector from the specified scalar values. [`vector3`](/documentation/simd/vector3-3pmc2) Returns a new vector from the specified scalar values. [`simd_make_long3_undef(_:)`](/documentation/simd/simd_make_long3_undef(_:)-4ehx) Returns a new vector with the first element set to a scalar value, and other elements undefined. ### Functions to Create Three-Element Vectors From Combinations of Vectors and Scalar Values [`simd_make_long3(_:_:)`](/documentation/simd/simd_make_long3(_:_:)-3zz23) Returns a new vector from a scalar value and a vector. [`simd_make_long3(_:_:)`](/documentation/simd/simd_make_long3(_:_:)-36pz0) Returns a new vector from a vector and a scalar value. [`vector3`](/documentation/simd/vector3-6gwfj) Returns a new vector from a vector and a scalar value. ### Functions to Create Three-Element Vectors From Vectors of Other Types [`simd_long`](/documentation/simd/simd_long-7iv6) Returns a new vector from the specified vector of 8-bit, signed integer elements. [`simd_long`](/documentation/simd/simd_long-7936) Returns a new vector from the specified vector of 8-bit, unsigned integer elements. [`simd_long`](/documentation/simd/simd_long-7dya) Returns a new vector from the specified vector of 16-bit, signed integer elements. [`simd_long`](/documentation/simd/simd_long-740y) Returns a new vector from the specified vector of 16-bit, unsigned integer elements. [`simd_long`](/documentation/simd/simd_long-7kye) Returns a new vector from the specified vector of 32-bit, signed integer elements. [`simd_long`](/documentation/simd/simd_long-7aza) Returns a new vector from the specified vector of 32-bit, unsigned integer elements. [`simd_long`](/documentation/simd/simd_long-7miu) Returns a new vector from the specified vector of 64-bit, signed integer elements. [`simd_long`](/documentation/simd/simd_long-7ccm) Returns a new vector from the specified vector of 64-bit, unsigned integer elements. [`simd_long`](/documentation/simd/simd_long-7aju) Returns a new vector from the specified vector of 32-bit, floating-point elements. [`simd_long`](/documentation/simd/simd_long-79xy) 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_long_sat`](/documentation/simd/simd_long_sat-5ov8p) Returns a new vector from the specified vector of 8-bit, signed integer elements. [`simd_long_sat`](/documentation/simd/simd_long_sat-5p5gp) Returns a new vector from the specified vector of 8-bit, unsigned integer elements. [`simd_long_sat`](/documentation/simd/simd_long_sat-5oqa1) Returns a new vector from the specified vector of 16-bit, signed integer elements. [`simd_long_sat`](/documentation/simd/simd_long_sat-5p05l) Returns a new vector from the specified vector of 16-bit, unsigned integer elements. [`simd_long_sat`](/documentation/simd/simd_long_sat-5oscx) Returns a new vector from the specified vector of 32-bit, signed integer elements. [`simd_long_sat`](/documentation/simd/simd_long_sat-5p28h) Returns a new vector from the specified vector of 32-bit, unsigned integer elements. [`simd_long_sat`](/documentation/simd/simd_long_sat-5oqsr) Returns a new vector from the specified vector of 64-bit, signed integer elements. [`simd_long_sat`](/documentation/simd/simd_long_sat-5p0mj) Returns a new vector from the specified vector of 64-bit, unsigned integer elements. [`simd_long_sat`](/documentation/simd/simd_long_sat-5p3tb) Returns a new vector from the specified vector of 32-bit, floating-point elements. [`simd_long_sat`](/documentation/simd/simd_long_sat-5p3aj) Returns a new vector from the specified vector of 64-bit, floating-point elements. ### Common Functions [`simd_abs(_:)`](/documentation/simd/simd_abs(_:)-8d3rx) Returns the absolute value of each element in a vector. [`simd_clamp(_:_:_:)`](/documentation/simd/simd_clamp(_:_:_:)-6yqku) Returns each element in a vector clamped to a specified range. [`simd_equal(_:_:)`](/documentation/simd/simd_equal(_:_:)-1ikxk) 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(_:)-45zbv) Returns the miniumum value in a vector. [`simd_reduce_max(_:)`](/documentation/simd/simd_reduce_max(_:)-4hb9r) Returns the maximum value in a vector. [`simd_reduce_add(_:)`](/documentation/simd/simd_reduce_add(_:)-2uv9x) Returns the sum of all elements in a vector. ### Extrema Functions [`simd_min(_:_:)`](/documentation/simd/simd_min(_:_:)-3a034) Returns the minimum value of each element in a vector. [`simd_max(_:_:)`](/documentation/simd/simd_max(_:_:)-2hury) Returns the maximum value of each element in a vector. ### Logic and Bitwise Functions [`simd_any(_:)`](/documentation/simd/simd_any(_:)-698ng) [`simd_all(_:)`](/documentation/simd/simd_all(_:)-1ao6q) [`simd_bitselect(_:_:_:)`](/documentation/simd/simd_bitselect(_:_:_:)-9hl4) 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_long3`](/documentation/simd/vector_long3) --- 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)