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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)
{
byte* inBuffer = stackalloc byte[32];
float* inArray = Align(inBuffer, 16);
float* outArray = stackalloc float[4];
var vf = Sse.LoadAlignedVector128(inArray);
Unsafe.Write(outArray, vf);
for (var i = 0; i < 4; i++)
{
if (BitConverter.SingleToInt32Bits(inArray[i]) != BitConverter.SingleToInt32Bits(outArray[i]))
{
Console.WriteLine("SSE LoadAlignedVector128 failed on float:");
for (var n = 0; n < 4; n++)
{
Console.Write(outArray[n] + ", ");
}
Console.WriteLine();
testResult = Fail;
break;
}
}
}
return testResult;
}
static unsafe float* Align(byte* buffer, byte expectedAlignment)
{
// Compute how bad the misalignment is, which is at most (expectedAlignment - 1).
// Then subtract that from the expectedAlignment and add it to the original address
// to compute the aligned address.
var misalignment = expectedAlignment - ((ulong)(buffer) % expectedAlignment);
return (float*)(buffer + misalignment);
}
}
}
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