# Burst Arm Neon intrinsics reference The following tables list the major Arm Neon intrinsic operations available in Burst. The **Operation** column contains the primary naming prefix for intrinsics of this type. For the full list of intrinsics available for each operation, refer to the [`Unity.Burst.Intrinsics.Arm.Neon`](/engine/6000.7/script-reference/unity/burst/intrinsics/arm/neon.md) API reference. For information on how to use these intrinsics, refer to [Processor specific SIMD extensions](/engine/6000.7/manual/programming-environment/script-compilation/burst/csharp-burst-intrinsics/processors.md). ### Intrinsics type creation and conversion | Operation | Description | | ----------- | ------------------------------------------------- | | vcreate | Create vector | | vdup\_n | Duplicate (splat) value | | vdup\_lane | Duplicate (splat) vector element | | vmov\_n | Duplicate (splat) value | | vcopy\_lane | Insert vector element from another vector element | | vcombine | Join two vectors into a larger vector | | vget\_high | Get the higher half of the vector | | vget\_low | Get the lower half of the vector | ### Arithmetic | Operation | Description | | --------- | ---------------------------------------------- | | vadd | Add | | vaddv | Add across vector | | vaddl | Add long | | vaddlv | Add long across Vector | | vaddw | Add wide | | vhadd | Halving add | | vrhadd | Rounding halving add | | vqadd | Saturating add | | vsqadd | Unsigned saturating Accumulate of signed value | | vuqadd | Signed saturating Accumulate of unsigned value | | vaddhn | Add returning high narrow | | vraddhn | Rounding add returning high narrow | | vpadd | Add pairwise (vector) | | vpaddl | Signed add long pairwise | | vpadal | Signed add and accumulate long pairwise | | vsubl | Subtract long | | vsubw | Subtract wide | | vhsub | Halving subtract | | vqsub | Saturating subtract | | vsubhn | Subtract returning high narrow | | vrsubhn | Rounding subtract returning high narrow | ### Multiply | Operation | Description | | -------------- | ---------------------------------------------------------------------------- | | vmul | Multiply (vector) | | vmul\_n | Vector multiply by scalar | | vmul\_lane | Multiply (vector) | | vmull | Multiply long (vector) | | vmull\_n | Vector long multiply by scalar | | vmull\_lane | Multiply long (vector) | | vmulx | Floating-point multiply extended | | vmla | Multiply-add to accumulator (vector) | | vmla\_lane | Vector multiply accumulate with scalar | | vmla\_n | Vector multiply accumulate with scalar | | vmlal | Multiply-accumulate long (vector) | | vmlal\_lane | Multiply-accumulate long with scalar | | vmlal\_n | Multiply-accumulate long with scalar | | vmls | Multiply-subtract from accumulator (vector) | | vmls\_lane | Vector multiply subtract with scalar | | vmls\_n | Vector multiply subtract with scalar | | vmlsl | Multiply-subtract long (vector) | | vmlsl\_lane | Vector multiply-subtract long with scalar | | vmlsl\_n | Vector multiply-subtract long with scalar | | vqdmull | Signed saturating doubling multiply long | | vqdmull\_lane | Vector saturating doubling multiply long with scalar | | vqdmull\_n | Vector saturating doubling multiply long with scalar | | vqdmulh | Saturating doubling multiply returning high half | | vqdmulh\_lane | Vector saturating doubling multiply high by scalar | | vqdmulh\_n | Vector saturating doubling multiply high by scalar | | vqrdmulh | Saturating rounding doubling multiply returning high half | | vqrdmulh\_lane | Vector saturating rounding doubling multiply high with scalar | | vqrdmulh\_n | Vector saturating rounding doubling multiply high with scalar | | vqdmlal | Saturating doubling multiply-add long | | vqdmlal\_lane | Vector saturating doubling multiply-accumulate longwith scalar | | vqdmlal\_n | Vector saturating doubling multiply-accumulate longwith scalar | | vqdmlsl | Signed saturating doubling multiply-subtract long | | vqdmlsl\_lane | Vector saturating doubling multiply-subtract longwith scalar | | vqdmlsl\_n | Vector saturating doubling multiply-subtract longwith scalar | | vqrdmlah | Saturating rounding doubling multiply accumulatereturning high half (vector) | | vqrdmlah\_lane | Saturating rounding doubling multiply accumulatereturning high half (vector) | | vqrdmlsh | Saturating rounding doubling multiply subtractreturning high half (vector) | | vqrdmlsh\_lane | Saturating rounding doubling multiply subtractreturning high half (vector) | | vfma | Floating-point fused multiply-add to accumulator (vector) | | vfma\_n | Floating-point fused multiply-add to accumulator (vector) | | vfma\_lane | Floating-point fused multiply-add to accumulator (vector) | | vfms | Floating-point fused multiply-subtractfrom accumulator (vector) | | vfms\_n | Floating-point fused multiply-subtractfrom accumulator (vector) | | vfms\_lane | Floating-point fused multiply-subtractfrom accumulator (vector) | | vdiv | Floating-point divide (vector) | ### Data processing | Operation | Description | | --------- | ----------------------------------------------- | | vpmax | Maximum pairwise | | vpmaxnm | Floating-point maximum number pairwise (vector) | | vpmin | Minimum pairwise | | vpminnm | Floating-point minimum number pairwise (vector) | | vabd | Absolute difference | | vabdl | Absolute difference long | | vaba | Absolute difference and accumulate | | vabal | Absolute difference and accumulate long | | vmax | Maximum | | vmaxnm | Floating-point maximum number | | vmaxv | Maximum across vector | | vmin | Minimum | | vminnm | Floating-point minimum number | | vminv | Minimum across vector | | vabs | Absolute value | | vqabs | Saturating absolute value | | vneg | Negate | | vqneg | Saturating negate | | vcls | Count leading sign bits | | vclz | Count leading zero bits | | vcnt | Population count per byte | | vrecpe | Reciprocal estimate | | vrecps | Reciprocal step | | vrecpx | Floating-point reciprocal exponent | | vrsqrte | Reciprocal square root estimate | | vrsqrts | Reciprocal square root step | | vmovn | Extract narrow | | vmovl | Extract long | | vqmovn | Saturating extract narrow | | vqmovun | Signed saturating extract unsigned narrow | ### Comparison | Operation | Description | | --------- | ----------------------------------------------------- | | vceq | Compare bitwise equal | | vceqz | Compare bitwise equal to zero | | vcge | Compare greater than or equal | | vcgez | Compare greater than or equal to zero | | vcle | Compare less than or equal | | vclez | Compare less than or equal to zero | | vcgt | Compare greater than | | vcgtz | Compare greater than zero | | vclt | Compare less than | | vcltz | Compare less than zero | | vcage | Floating-point absolute compare greater than or equal | | vcagt | Floating-point absolute compare greater than | | vcale | Floating-point absolute compare less than or equal | | vcalt | Floating-point absolute compare less than | ### Bitwise | Operation | Description | | --------- | -------------------- | | vtst | Test bits nonzero | | vmvn | Bitwise NOT | | vand | Bitwise AND | | vorr | Bitwise OR | | vorn | Bitwise OR NOT | | veor | Bitwise exclusive OR | | vbic | Bitwise bit clear | | vbsl | Bitwise select | ### Shift | Operation | Description | | ----------- | ---------------------------------------------------------------- | | vshl | Shift left (register) | | vqshl | Saturating shift left (register) | | vqshl\_n | Saturating shift left (immediate) | | vqshlu\_n | Saturating shift left unsigned (immediate) | | vrshl | Rounding shift left (register) | | vqrshl | Saturating rounding shift left (register) | | vshl\_n | Shift left (immediate) | | vshll\_n | Shift left long (immediate) | | vshr\_n | Shift right (immediate) | | vrshr\_n | Rounding right left (register) | | vshrn\_n | Shift right narrow (immediate) | | vqshrun\_n | Signed saturating shift rightunsigned narrow (immediate) | | vqrshrun\_n | Signed saturating rounded shift rightunsigned narrow (immediate) | | vqshrn\_n | Signed saturating shift right narrow (immediate) | | vrshrn\_n | Rounding shift right narrow (immediate) | | vqrshrn\_n | Signed saturating rounded shift right narrow (immediate) | | vsra\_n | Signed shift right and accumulate (immediate) | | vrsra\_n | Signed rounding shift right and accumulate (immediate) | | vsri\_n | Shift right and insert (immediate) | | vsli\_n | Shift left and insert (immediate) | ### Floating-point | Operation | Description | | --------- | ---------------------------------------------------------------------- | | vcvt | Convert to/from another precision or fixed point,rounding towards zero | | vcvta | Convert to integer, rounding to nearest with ties to away | | vcvtm | Convert to integer, rounding towards minus infinity | | vcvtn | Convert to integer, rounding to nearest with ties to even | | vcvtp | Convert to integer, rounding towards plus infinity | | vcvtx | Convert to lower precision,rounding to nearest with ties to odd | | vcvt\_n | Convert to/from fixed point, rounding towards zero | | vrnd | Round to Integral, toward zero | | vrnda | Round to Integral, with ties to away | | vrndi | Round to Integral, using current rounding mode | | vrndm | Round to Integral, towards minus infinity | | vrndn | Round to Integral, with ties to even | | vrndp | Round to Integral, towards plus infinity | | vrndx | Round to Integral exact | ### Load and store | Operation | Description | | ---------- | ----------------------- | | vld1 | Load vector from memory | | vst1 | Store vector to memory | | vget\_lane | Get vector element | | vset\_lane | Set vector element | ### Permutation | Operation | Description | | --------- | -------------------------------------- | | vext | Extract vector from pair of vectors | | vtbl1 | Table vector Lookup | | vtbx1 | Table vector lookup extension | | vqtbl1 | Table vector Lookup | | vqtbx1 | Table vector lookup extension | | vrbit | Reverse bit order | | vrev16 | Reverse elements in 16-bit halfwords | | vrev32 | Reverse elements in 32-bit words | | vrev64 | Reverse elements in 64-bit doublewords | | vtrn1 | Transpose vectors (primary) | | vtrn2 | Transpose vectors (secondary) | | vzip1 | Zip vectors (primary) | | vzip2 | Zip vectors (secondary) | | vuzp1 | Unzip vectors (primary) | | vuzp2 | Unzip vectors (secondary) | ### Cryptographic | Operation | Description | | --------- | ------------------------------------------- | | CRC32 | Cyclic redundancy check (CRC) calculations. | | SHA1 | SHA1 calculations. | | SHA256 | SHA256 calculations. | | AES | AES calculations. | ### Miscellaneous | Operation | Description | | ---------- | ----------- | | vsqrt | Square root | | vdot | Dot product | | vdot\_lane | Dot product | ## Additional resources * [Processor specific SIMD extensions](/engine/6000.7/manual/programming-environment/script-compilation/burst/csharp-burst-intrinsics/processors.md)