# simd_char4 A vector of four 8-bit signed integer elements. ``` typealias simd_char4 = SIMD4 ``` ## Topics ### Functions to Create Four-Element Vectors From Other Vectors [`simd_make_char4(_:)`](/documentation/simd/simd_make_char4(_:)-mdlt) Returns a new vector from the specified two-element vector, and other elements set to zero. [`simd_make_char4(_:)`](/documentation/simd/simd_make_char4(_:)-k1u0) Returns a new vector from the specified three-element vector, and other elements set to zero. [`simd_make_char4(_:)`](/documentation/simd/simd_make_char4(_:)-gjz7) Returns a new vector from the specified vector. [`simd_make_char4(_:)`](/documentation/simd/simd_make_char4(_:)-1mbtb) Returns a new vector by truncating the specified eight-element vector. [`simd_make_char4(_:)`](/documentation/simd/simd_make_char4(_:)-4y0kh) Returns a new vector by truncating the specified sixteen-element vector. [`simd_make_char4(_:)`](/documentation/simd/simd_make_char4(_:)-3tnz9) Returns a new vector by truncating the specified thirty two-element vector. [`simd_make_char4(_:)`](/documentation/simd/simd_make_char4(_:)-69u9q) Returns a new vector by truncating the specified sixty four-element vector. [`simd_make_char4(_:_:)`](/documentation/simd/simd_make_char4(_:_:)-3vf4l) Returns a new vector from the specified vectors. [`vector4`](/documentation/simd/vector4-695o8) Returns a new vector from the specified vectors. [`simd_make_char4_undef(_:)`](/documentation/simd/simd_make_char4_undef(_:)-6zlek) Returns a new vector from the specified two-element vector, and other elements undefined. [`simd_make_char4_undef(_:)`](/documentation/simd/simd_make_char4_undef(_:)-73111) 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_char4(_:)`](/documentation/simd/simd_make_char4(_:)-8kfe3) Returns a new vector with the first element set to a scalar value, and other elements set to zero. [`vector4`](/documentation/simd/vector4-2lql7) Returns a new vector from the specified scalar values. [`simd_make_char4(_:_:_:_:)`](/documentation/simd/simd_make_char4(_:_:_:_:)) Returns a new vector from the specified scalar values. [`simd_make_char4_undef(_:)`](/documentation/simd/simd_make_char4_undef(_:)-99pql) 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 Value [`simd_make_char4(_:_:_:)`](/documentation/simd/simd_make_char4(_:_:_:)-82ftd) Returns a new vector from a vector and scalar values. [`simd_make_char4(_:_:)`](/documentation/simd/simd_make_char4(_:_:)-226qq) Returns a new vector from a vector and a scalar value. [`vector4`](/documentation/simd/vector4-4dfou) Returns a new vector from a vector and a scalar value. [`simd_make_char4(_:_:_:)`](/documentation/simd/simd_make_char4(_:_:_:)-9mb46) Returns a new vector from two scalar values and a vector. [`simd_make_char4(_:_:_:)`](/documentation/simd/simd_make_char4(_:_:_:)-94kun) Returns a new vector from a scalar value, a vector, and a scalar value. [`simd_make_char4(_:_:)`](/documentation/simd/simd_make_char4(_:_:)-76rpp) Returns a new vector from a scalar value and a vector. ### Functions to Create Four-Element Vectors From Vectors of Other Types [`simd_char`](/documentation/simd/simd_char-7q0xi) Returns a new vector from the specified vector of 8-bit, signed integer elements. [`simd_char`](/documentation/simd/simd_char-7pqwm) Returns a new vector from the specified vector of 8-bit, unsigned integer elements. [`simd_char`](/documentation/simd/simd_char-7q5x2) Returns a new vector from the specified vector of 16-bit, signed integer elements. [`simd_char`](/documentation/simd/simd_char-7pvsm) Returns a new vector from the specified vector of 16-bit, unsigned integer elements. [`simd_char`](/documentation/simd/simd_char-7pz0a) Returns a new vector from the specified vector of 32-bit, signed integer elements. [`simd_char`](/documentation/simd/simd_char-7pp6i) Returns a new vector from the specified vector of 32-bit, unsigned integer elements. [`simd_char`](/documentation/simd/simd_char-7pxci) Returns a new vector from the specified vector of 64-bit, signed integer elements. [`simd_char`](/documentation/simd/simd_char-7pnki) Returns a new vector from the specified vector of 64-bit, unsigned integer elements. [`simd_char`](/documentation/simd/simd_char-7pp9i) Returns a new vector from the specified vector of 32-bit, floating-point elements. [`simd_char`](/documentation/simd/simd_char-7pptu) 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_char_sat`](/documentation/simd/simd_char_sat-1z4wz) Returns a new vector from the specified vector of 8-bit, signed integer elements. [`simd_char_sat`](/documentation/simd/simd_char_sat-1yuzn) Returns a new vector from the specified vector of 8-bit, unsigned integer elements. [`simd_char_sat`](/documentation/simd/simd_char_sat-1z9tv) Returns a new vector from the specified vector of 16-bit, signed integer elements. [`simd_char_sat`](/documentation/simd/simd_char_sat-1yzyb) Returns a new vector from the specified vector of 16-bit, unsigned integer elements. [`simd_char_sat`](/documentation/simd/simd_char_sat-1z32v) Returns a new vector from the specified vector of 32-bit, signed integer elements. [`simd_char_sat`](/documentation/simd/simd_char_sat-1yt3r) Returns a new vector from the specified vector of 32-bit, unsigned integer elements. [`simd_char_sat`](/documentation/simd/simd_char_sat-1z4mp) Returns a new vector from the specified vector of 64-bit, signed integer elements. [`simd_char_sat`](/documentation/simd/simd_char_sat-1yupd) Returns a new vector from the specified vector of 64-bit, unsigned integer elements. [`simd_char_sat`](/documentation/simd/simd_char_sat-1ywi1) Returns a new vector from the specified vector of 32-bit, floating-point elements. [`simd_char_sat`](/documentation/simd/simd_char_sat-1yx5t) Returns a new vector from the specified vector of 64-bit, floating-point elements. ### Common Functions [`simd_abs(_:)`](/documentation/simd/simd_abs(_:)-81ics) Returns the absolute value of each element in a vector. [`simd_clamp(_:_:_:)`](/documentation/simd/simd_clamp(_:_:_:)-1lm34) Returns each element in a vector clamped to a specified range. [`simd_equal(_:_:)`](/documentation/simd/simd_equal(_:_:)-4x3vb) 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(_:)-4ue96) Returns the miniumum value in a vector. [`simd_reduce_max(_:)`](/documentation/simd/simd_reduce_max(_:)-4ql9m) Returns the maximum value in a vector. [`simd_reduce_add(_:)`](/documentation/simd/simd_reduce_add(_:)-2yeuw) Returns the sum of all elements in a vector. ### Extrema Functions [`simd_min(_:_:)`](/documentation/simd/simd_min(_:_:)-2mbto) Returns the minimum value of each element in a vector. [`simd_max(_:_:)`](/documentation/simd/simd_max(_:_:)-7qdak) Returns the maximum value of each element in a vector. ### Logic and Bitwise Functions [`simd_any(_:)`](/documentation/simd/simd_any(_:)-6cs8j) [`simd_all(_:)`](/documentation/simd/simd_all(_:)-1jxv1) [`simd_bitselect(_:_:_:)`](/documentation/simd/simd_bitselect(_:_:_:)-4mvfw) ### Alternative Type Alias [`vector_char4`](/documentation/simd/vector_char4) --- 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)