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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
//
using System;
using System.Runtime.CompilerServices;
using System.Runtime.InteropServices;
using System.Runtime.Intrinsics.X86;
using System.Runtime.Intrinsics;
namespace IntelHardwareIntrinsicTest
{
class Program
{
const int Pass = 100;
const int Fail = 0;
static unsafe int Main(string[] args)
{
int testResult = Pass;
if (Sse.IsSupported)
{
using (TestTable<float> floatTable = new TestTable<float>(new float[4] { 1, -5, 100, 0 }, new float[4]))
{
var vf1 = Unsafe.Read<Vector128<float>>(floatTable.inArray1Ptr);
var vf2 = Sse.SqrtScalar(vf1);
Unsafe.Write(floatTable.outArrayPtr, vf2);
if (!floatTable.CheckResult((x, y, z) => {
var expected = MathF.Sqrt(y[0]);
return ((Math.Abs(expected - z[0]) <= 0.0003662109375f) // |Relative Error| <= 1.5 * 2^-12
|| (float.IsNaN(expected) && float.IsNaN(z[0]))
|| (float.IsNegativeInfinity(expected) && float.IsNegativeInfinity(z[0]))
|| (float.IsPositiveInfinity(expected) && float.IsPositiveInfinity(z[0])))
&& (z[1] == x[1]) && (z[2] == x[2]) && (z[3] == x[3]);
}))
{
Console.WriteLine("SSE SqrtScalar failed on float:");
foreach (var item in floatTable.outArray)
{
Console.Write(item + ", ");
}
Console.WriteLine();
testResult = Fail;
}
}
using (TestTable<float> floatTable = new TestTable<float>(new float[4] { 1, -5, 100, 0 }, new float[4] { 22, -1, -50, 0 }, new float[4]))
{
var vf1 = Unsafe.Read<Vector128<float>>(floatTable.inArray1Ptr);
var vf2 = Unsafe.Read<Vector128<float>>(floatTable.inArray2Ptr);
var vf3 = Sse.SqrtScalar(vf1, vf2);
Unsafe.Write(floatTable.outArrayPtr, vf3);
if (!floatTable.CheckResult((x, y, z) => {
var expected = MathF.Sqrt(y[0]);
return ((Math.Abs(expected - z[0]) <= 0.0003662109375f) // |Relative Error| <= 1.5 * 2^-12
|| (float.IsNaN(expected) && float.IsNaN(z[0]))
|| (float.IsNegativeInfinity(expected) && float.IsNegativeInfinity(z[0]))
|| (float.IsPositiveInfinity(expected) && float.IsPositiveInfinity(z[0])))
&& (z[1] == x[1]) && (z[2] == x[2]) && (z[3] == x[3]);
}))
{
Console.WriteLine("SSE SqrtScalar failed on float:");
foreach (var item in floatTable.outArray)
{
Console.Write(item + ", ");
}
Console.WriteLine();
testResult = Fail;
}
}
}
return testResult;
}
public unsafe struct TestTable<T> : IDisposable where T : struct
{
public T[] inArray1;
public T[] inArray2;
public T[] outArray;
public void* inArray1Ptr => inHandle1.AddrOfPinnedObject().ToPointer();
public void* inArray2Ptr => inHandle2.AddrOfPinnedObject().ToPointer();
public void* outArrayPtr => outHandle.AddrOfPinnedObject().ToPointer();
GCHandle inHandle1;
GCHandle inHandle2;
GCHandle outHandle;
public TestTable(T[] a, T[] b) : this(a, a, b)
{
}
public TestTable(T[] a, T[] b, T[] c)
{
this.inArray1 = a;
this.inArray2 = b;
this.outArray = c;
inHandle1 = GCHandle.Alloc(inArray1, GCHandleType.Pinned);
inHandle2 = GCHandle.Alloc(inArray2, GCHandleType.Pinned);
outHandle = GCHandle.Alloc(outArray, GCHandleType.Pinned);
}
public bool CheckResult(Func<T[], T[], T[], bool> check)
{
return check(inArray1, inArray2, outArray);
}
public void Dispose()
{
inHandle1.Free();
inHandle2.Free();
outHandle.Free();
}
}
}
}
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