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public static int IntrinsicTest(byte[] lhs, byte[] rhs) | |
{ | |
byte ths = 16; | |
Intrinsics.Vector128<byte> threshold = Intrinsics.Vector128.Create(ths, ths, ths, ths, ths, ths, ths, ths, ths, ths, ths, ths, ths, ths, ths, ths); | |
byte bit = 1; | |
var VECTOR_ONE = Intrinsics.Vector128.Create(bit, bit, bit, bit, bit, bit, bit, bit, bit, bit, bit, bit, bit, bit, bit, bit); | |
var result = new Intrinsics.Vector128<int>(); | |
var i = 0; | |
for (i = 0; i <= lhs.Length - 16; i += 16) | |
{ | |
//using System.Numerics.Vector for loading, then converting to Intrinsics.Vector128 | |
var v128a = new Vector<byte>(lhs, i).AsVector128(); | |
var v128b = new Vector<byte>(rhs, i).AsVector128(); | |
var subtracted = Intrinsics.Arm.AdvSimd.AbsoluteDifference(v128a, v128b); | |
var thresholdPassed = Intrinsics.Arm.AdvSimd.CompareGreaterThanOrEqual(subtracted, threshold); | |
var normalized = Intrinsics.Vector128.AsSByte(thresholdPassed); | |
var rtemp = Intrinsics.Arm.AdvSimd.AddPairwiseWidening(normalized); | |
result = Intrinsics.Arm.AdvSimd.AddPairwiseWideningAndAdd(result, rtemp); | |
} | |
return -1 * (int)(Intrinsics.Arm.AdvSimd.Extract(result, 0) | |
+ Intrinsics.Arm.AdvSimd.Extract(result, 1) | |
+ Intrinsics.Arm.AdvSimd.Extract(result, 2) | |
+ Intrinsics.Arm.AdvSimd.Extract(result, 3)); | |
} |
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