# simd_float8 A vector of eight 32-bit floating-point elements. ``` typealias simd_float8 = SIMD8 ``` ## Topics ### Functions to Create Eight-Element Vectors From Other Vectors [`simd_make_float8(_:)`](/documentation/simd/simd_make_float8(_:)-9l23p) Returns a new vector from the specified two-element vector, and other elements set to zero. [`simd_make_float8(_:)`](/documentation/simd/simd_make_float8(_:)-9i5x2) Returns a new vector from the specified three-element vector, and other elements set to zero. [`simd_make_float8(_:)`](/documentation/simd/simd_make_float8(_:)-6v9s) Returns a new vector from the specified four-element vector, and other elements set to zero. [`simd_make_float8(_:)`](/documentation/simd/simd_make_float8(_:)-907gf) Returns a new vector from the specified vector. [`simd_make_float8(_:)`](/documentation/simd/simd_make_float8(_:)-9z6aw) Returns a new vector by truncating the specified 16-element vector. [`simd_make_float8(_:_:)`](/documentation/simd/simd_make_float8(_:_:)) Returns a new vector from the specified vectors. [`vector8`](/documentation/simd/vector8-9dpo5) Returns a new vector from the specified vectors. [`simd_make_float8_undef(_:)`](/documentation/simd/simd_make_float8_undef(_:)-9njgo) Returns a new vector from the specified two-element vector, and other elements undefined. [`simd_make_float8_undef(_:)`](/documentation/simd/simd_make_float8_undef(_:)-9qfif) Returns a new vector from the specified three-element vector, and other elements undefined. [`simd_make_float8_undef(_:)`](/documentation/simd/simd_make_float8_undef(_:)-8sol) 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_float8(_:)`](/documentation/simd/simd_make_float8(_:)-6hx2j) Returns a new vector with the first element set to a scalar value, and other elements set to zero. [`simd_make_float8_undef(_:)`](/documentation/simd/simd_make_float8_undef(_:)-8cuk5) 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_float`](/documentation/simd/simd_float-1pfvj) Returns a new vector from the specified vector of 8-bit, signed-integer elements. [`simd_float`](/documentation/simd/simd_float-1ppun) Returns a new vector from the specified vector of 8-bit, unsigned-integer elements. [`simd_float`](/documentation/simd/simd_float-1pazj) Returns a new vector from the specified vector of 16-bit, signed-integer elements. [`simd_float`](/documentation/simd/simd_float-1pkyn) Returns a new vector from the specified vector of 16-bit, unsigned-integer elements. [`simd_float`](/documentation/simd/simd_float-1phqj) Returns a new vector from the specified vector of 32-bit, signed-integer elements. [`simd_float`](/documentation/simd/simd_float-1prpn) Returns a new vector from the specified vector of 32-bit, unsigned-integer elements. [`simd_float`](/documentation/simd/simd_float-1pgbl) Returns a new vector from the specified vector of 64-bit, signed-integer elements. [`simd_float`](/documentation/simd/simd_float-1pq5d) Returns a new vector from the specified vector of 64-bit, unsigned-integer elements. [`simd_float`](/documentation/simd/simd_float-1poa9) Returns a new vector from the specified vector of 32-bit, floating-point elements. [`simd_float`](/documentation/simd/simd_float-1pno1) Returns a new vector from the specified vector of 64 -bit, floating-point elements. ### Common Functions [`simd_abs(_:)`](/documentation/simd/simd_abs(_:)-7ozws) Returns the absolute value of each element in a vector. [`simd_clamp(_:_:_:)`](/documentation/simd/simd_clamp(_:_:_:)-14mzm) Returns each element in a vector clamped to a specified range. [`simd_equal(_:_:)`](/documentation/simd/simd_equal(_:_:)-7of37) Returns true if every element in a vector is exactly equal to the corresponding element in a second vector, and otherwise returns false. [`simd_fract(_:)`](/documentation/simd/simd_fract(_:)-3jbrt) Returns the fractional part of each element in a vector. [`simd_sign(_:)`](/documentation/simd/simd_sign(_:)-7hbzz) Returns the sign of each element in a vector. [`simd_step(_:_:)`](/documentation/simd/simd_step(_:_:)-96e50) Returns zero for each element in a vector less than a specified edge, and otherwise returns one. ### Reduce Functions [`simd_reduce_min(_:)`](/documentation/simd/simd_reduce_min(_:)-3odum) Returns the miniumum value in a vector. [`simd_reduce_max(_:)`](/documentation/simd/simd_reduce_max(_:)-55e32) Returns the maximum value in a vector. [`simd_reduce_add(_:)`](/documentation/simd/simd_reduce_add(_:)-3az3s) Returns the sum of all elements in a vector. ### Interpolation Functions [`simd_smoothstep(_:_:_:)`](/documentation/simd/simd_smoothstep(_:_:_:)-845yk) Returns an element-wise smoothly interpolated value between two vectors. [`simd_mix(_:_:_:)`](/documentation/simd/simd_mix(_:_:_:)-4c4kn) Returns an element-wise linearly interpolated value between two vectors. ### Extrema Functions [`simd_min(_:_:)`](/documentation/simd/simd_min(_:_:)-7n539) Returns the minimum value of each element in a vector. [`simd_max(_:_:)`](/documentation/simd/simd_max(_:_:)-6m7z0) Returns the maximum value of each element in a vector. ### Reciprocal and Reciprocal Square Root Functions [`simd_recip(_:)`](/documentation/simd/simd_recip(_:)-989se) Returns the reciprocal of each element in a vector. [`simd_fast_recip(_:)`](/documentation/simd/simd_fast_recip(_:)-16fz3) Returns the fast reciprocal of each element in a vector. [`simd_precise_recip(_:)`](/documentation/simd/simd_precise_recip(_:)-74deu) Returns the precise reciprocal of each element in a vector. [`simd_rsqrt(_:)`](/documentation/simd/simd_rsqrt(_:)-1oj3u) Returns the reciprocal square root of each element in a vector. [`simd_fast_rsqrt(_:)`](/documentation/simd/simd_fast_rsqrt(_:)-923f0) Returns the fast reciprocal square root of each element in a vector. [`simd_precise_rsqrt(_:)`](/documentation/simd/simd_precise_rsqrt(_:)-1hqkg) Returns the precise reciprocal square root of each element in a vector. ### Exponential and Logarithmic Functions [`exp(_:)`](/documentation/simd/exp(_:)-1pg0i) Returns *e* raised to the power of each element in a vector. [`exp2(_:)`](/documentation/simd/exp2(_:)-1n4s0) Returns 2 raised to the power of each element in a vector. [`exp10(_:)`](/documentation/simd/exp10(_:)-8kkzs) Returns 10 raised to the power of each element in a vector. [`expm1(_:)`](/documentation/simd/expm1(_:)-70odp) Returns *eˣ-1* for each element in a vector. [`log(_:)`](/documentation/simd/log(_:)-5bs8h) Returns the natural logarithm of each element in a vector. [`log2(_:)`](/documentation/simd/log2(_:)-939d1) Returns the base 2 logarithm of each element in a vector. [`log10(_:)`](/documentation/simd/log10(_:)-94fwu) Returns the base 10 logarithm of each element in a vector. [`log1p(_:)`](/documentation/simd/log1p(_:)-7f7d8) Returns *log(1+x)* of each element in a vector. ### Geometry Functions [`simd_dot`](/documentation/simd/simd_dot-7390g) Returns the dot product of two vectors. [`simd_project`](/documentation/simd/simd_project-8htqe) Returns the first vector projected onto the second vector. [`simd_fast_project`](/documentation/simd/simd_fast_project-98hyq) Returns the fast projected vector. [`simd_precise_project`](/documentation/simd/simd_precise_project-33evf) Returns the precise projected vector. [`simd_normalize`](/documentation/simd/simd_normalize-xs3) Returns a vector pointing in the same direction of the supplied vector, with a length of 1. [`simd_fast_normalize`](/documentation/simd/simd_fast_normalize-8x4o0) Returns the fast normalized vector. [`simd_precise_normalize`](/documentation/simd/simd_precise_normalize-623uc) Returns the precise normalized vector. ### Vector Norm Functions [`simd_norm_one`](/documentation/simd/simd_norm_one-fhar) Returns the sum of the absolute values of a vector. [`simd_norm_inf`](/documentation/simd/simd_norm_inf-9mawm) Returns the maximum absolute value of a vector. ### Length and Distance Functions [`simd_length`](/documentation/simd/simd_length-32wmj) Returns the length of a vector. [`simd_fast_length`](/documentation/simd/simd_fast_length-5utao) Returns the fast length of a vector. [`simd_precise_length`](/documentation/simd/simd_precise_length-67kmm) Returns the precise length of a vector. [`simd_length_squared`](/documentation/simd/simd_length_squared-3xa1d) Returns the square of the length of a vector. [`simd_distance`](/documentation/simd/simd_distance-8i534) Returns the distance between two vectors. [`simd_fast_distance`](/documentation/simd/simd_fast_distance-1ml9e) Returns the fast distance between two vectors. [`simd_precise_distance`](/documentation/simd/simd_precise_distance-9w7rx) Returns the precise distance between two vectors. [`simd_distance_squared`](/documentation/simd/simd_distance_squared-7gp4v) Returns the square of the distance between two vectors. ### Hyperbolic Functions [`acosh(_:)`](/documentation/simd/acosh(_:)-5ye64) Returns the inverse hyperbolic cosine of each element in a vector. [`asinh(_:)`](/documentation/simd/asinh(_:)-1uw5q) Returns the inverse hyperbolic sine of each element in a vector. [`atanh(_:)`](/documentation/simd/atanh(_:)-95265) Returns the inverse hyperbolic tangent of each element in a vector. [`cosh(_:)`](/documentation/simd/cosh(_:)-6rb1l) Returns the hyperbolic cosine of each element in a vector. [`sinh(_:)`](/documentation/simd/sinh(_:)-43ijd) Returns the hyperbolic sine of each element in a vector. [`tanh(_:)`](/documentation/simd/tanh(_:)-tpg5) Returns the hyperbolic tangent of each element in a vector. ### Logic Functions [`simd_select(_:_:_:)`](/documentation/simd/simd_select(_:_:_:)-5h243) Returns a vector that contains elements from either the first or second parameter, based on the corresponding element’s high-order bit in the mask. [`simd_bitselect(_:_:_:)`](/documentation/simd/simd_bitselect(_:_:_:)-66uzh) Returns a vector that contains elements from either the first or second parameter, based on the corresponding element in the third parameter. ### Math Functions [`cbrt(_:)`](/documentation/simd/cbrt(_:)-3f2k2) Returns the cube root of each element in a vector. [`erf(_:)`](/documentation/simd/erf(_:)-5vzab) Returns the error function for each element in a vector. [`erfc(_:)`](/documentation/simd/erfc(_:)-1csse) Returns the complementary error function for each element in a vector. [`fma(_:_:_:)`](/documentation/simd/fma(_:_:_:)-49crk) Returns the multiply-add result for corresponding elements in three vectors. [`fmod(_:_:)`](/documentation/simd/fmod(_:_:)-8fmuq) Returns the modulus after dividing each element in a vector by the corresponding element in a second vector. [`hypot(_:_:)`](/documentation/simd/hypot(_:_:)-47t8e) Returns the hypotenuse of a right-angled triangle with the sides that are adjacent to the right angle that two vectors define. [`lgamma(_:)`](/documentation/simd/lgamma(_:)-9g2rk) Returns the natural logarithm of the absolute value of the gamma function of each element in a vector. [`nextafter(_:_:)`](/documentation/simd/nextafter(_:_:)-sc7d) Returns the next representable value of each element in a vector in the direction of the corresponding element in a second vector. [`pow(_:_:)`](/documentation/simd/pow(_:_:)-nk2t) Returns each element in a vector raised to the power of the corresponding element in a second vector. [`remainder(_:_:)`](/documentation/simd/remainder(_:_:)-7l2wd) Returns the remainder after dividing each element in an array by the corresponding element in a second array of double-precision values. [`round(_:)`](/documentation/simd/round(_:)-1ffcx) Returns each element in a vector rounded to the nearest integer. [`simd_muladd(_:_:_:)`](/documentation/simd/simd_muladd(_:_:_:)-3v5t5) Returns the multiply-add result for corresponding elements in three vectors. [`tgamma(_:)`](/documentation/simd/tgamma(_:)-6tafl) Returns the gamma function for each element in a vector. ### Trigonometric Functions [`acos(_:)`](/documentation/simd/acos(_:)-7zw9c) Returns the arccosine of each element in a vector. [`asin(_:)`](/documentation/simd/asin(_:)-476k0) Returns the arcsine of each element in a vector. [`atan(_:)`](/documentation/simd/atan(_:)-al43) Returns the arctangent of each element in a vector. [`atan2(_:_:)`](/documentation/simd/atan2(_:_:)-52zvp) Returns the arctangent of each pair of corresponding elements in two vectors. [`cos(_:)`](/documentation/simd/cos(_:)-6spt8) Returns the cosine of each element in a vector. [`cospi(_:)`](/documentation/simd/cospi(_:)-mwoe) Returns the cosine of each element in a vector multiplied by pi. [`sin(_:)`](/documentation/simd/sin(_:)-8n720) Returns the sine of each element in a vector. [`sinpi(_:)`](/documentation/simd/sinpi(_:)-5sfds) Returns the sine of each element in a vector multiplied by pi. [`sincos(_:)`](/documentation/simd/sincos(_:)-26uzx) Returns the sine and cosine of each element in a vector. [`sincospi(_:)`](/documentation/simd/sincospi(_:)-3cme4) Returns the sine and cosine of each element in a vector multiplied by pi. [`tan(_:)`](/documentation/simd/tan(_:)-6t9p5) Returns the tangent of each element in a vector. [`tanpi(_:)`](/documentation/simd/tanpi(_:)-5w53i) Returns the tangent of each element in a vector multiplied by pi. ### Classification Functions [`isfinite(_:)`](/documentation/simd/isfinite(_:)-285ek) Returns true for each element that is finite in a vector. [`isinf(_:)`](/documentation/simd/isinf(_:)-9ud2k) Returns true for each element that is infinite in a vector. [`isnan(_:)`](/documentation/simd/isnan(_:)-8blhp) Returns true for each element that is not a number (NaN) in a vector. [`isnormal(_:)`](/documentation/simd/isnormal(_:)-36pn2) Returns true for each element that is normal in a vector. ### Alternative Type Alias [`vector_float8`](/documentation/simd/vector_float8) --- 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)