public static int Main()
{
// float
AssertEqual(Vector256.Create(1f).ToString(), "<1, 1, 1, 1, 1, 1, 1, 1>");
AssertEqual(Vector256.CreateScalar(1f).ToString(), "<1, 0, 0, 0, 0, 0, 0, 0>");
AssertEqual(Vector256.CreateScalarUnsafe(1f).ToScalar().ToString(), "1");
AssertEqual(Vector256.Create(0.0f, 1, 2, 3, 4, 5, 6, 7).ToString(), "<0, 1, 2, 3, 4, 5, 6, 7>");
// double
AssertEqual(Vector256.Create(1.0).ToString(), "<1, 1, 1, 1>");
AssertEqual(Vector256.CreateScalar(1.0).ToString(), "<1, 0, 0, 0>");
AssertEqual(Vector256.CreateScalarUnsafe(1.0).ToScalar().ToString(), "1");
AssertEqual(Vector256.Create(0.0, 1, 2, 3).ToString(), "<0, 1, 2, 3>");
// ushort
AssertEqual(Vector256.Create((ushort)1).ToString(), "<1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1>");
AssertEqual(Vector256.CreateScalar((ushort)1).ToString(), "<1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0>");
AssertEqual(Vector256.CreateScalarUnsafe((ushort)1).ToScalar().ToString(), "1");
AssertEqual(Vector256.Create((ushort)0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15).ToString(), "<0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15>");
// long
AssertEqual(Vector256.Create((long)1).ToString(), "<1, 1, 1, 1>");
AssertEqual(Vector256.CreateScalar((long)1).ToString(), "<1, 0, 0, 0>");
AssertEqual(Vector256.CreateScalarUnsafe((long)1).ToScalar().ToString(), "1");
AssertEqual(Vector256.Create((long)0, 1, 2, 3).ToString(), "<0, 1, 2, 3>");
return(retCode);
}
public void RunBasicScenario()
{
TestLibrary.TestFramework.BeginScenario(nameof(RunBasicScenario));
Double value = TestLibrary.Generator.GetDouble();
Vector256 <Double> result = Vector256.CreateScalarUnsafe(value);
ValidateResult(result, value);
}
public static Vector256 <uint> Create4UInt(uint a, uint b, uint c, uint d)
{
if (Avx2.IsSupported)
{
var t0 = Avx2.UnpackLow(Vector256.CreateScalarUnsafe(a).AsUInt64(), Vector256.CreateScalarUnsafe(b).AsUInt64()).AsUInt32();
var t1 = Avx2.UnpackLow(Vector256.CreateScalarUnsafe(c).AsUInt64(), Vector256.CreateScalarUnsafe(d).AsUInt64()).AsUInt32();
return(Avx2.Permute2x128(t0, t1, 0x20));
}
return(Vector256.Create(a, 0, b, 0, c, 0, d, 0));
}
public static float DotMultiplyIntrinsicWFma(ref Memory <float> mem1, ref Memory <float> mem2)
{
var span1 = mem1.Span;
var span2 = mem2.Span;
var cnt = Math.Min(span1.Length, span2.Length);
var v3 = Vector256.CreateScalarUnsafe(0f);
var vectLen = Vector256 <float> .Count;
var vectCnt = cnt / vectLen;
#if TEST
var file = Path.GetTempFileName();
using var writer = new StreamWriter(file);
Console.WriteLine($"Intrinsic with Fma Mult. results will be written into {file}");
#endif
int i;
unsafe
{
for (i = 0; i < vectCnt; i++)
{
var index = i * vectLen;
var v1 = Avx.LoadVector256((float *)Unsafe.AsPointer(ref span1[index]));
var v2 = Avx.LoadVector256((float *)Unsafe.AsPointer(ref span2[index]));
v3 = Fma.MultiplyAdd(v1, v2, v3);
#if TEST
writer.WriteLine($"{v1.ToString()}\t{v2.ToString()}\t{v3.ToString()}");
#endif
}
}
var total = 0f;
for (i = 0; i < vectLen; i++)
{
total += v3.GetElement(i);
}
for (i = vectCnt * vectLen; i < cnt; i++)
{
total += span1[i] * span2[i];
}
if (span1.Length != span2.Length)
{
var h = span1.Length > span2.Length ? span1 : span2;
for (var j = cnt; j < h.Length; j++)
{
total += h[j];
}
}
return(total);
}
public static Vector256 <byte> create(byte src)
{
return(Vector256.CreateScalarUnsafe(src));
}
public static float DotMultiplyIntrinsicWFmaWSpanPtr(ref Memory <float> vector1, ref Memory <float> vector2)
{
var span1 = vector1.Span;
var span2 = vector2.Span;
var cnt = Math.Min(span1.Length, span2.Length);
var v3 = Vector256.CreateScalarUnsafe(0f);
var vectLen = Vector256 <float> .Count;
var vectCnt = cnt / vectLen;
var total = 0f;
#if TEST
var file = Path.GetTempFileName();
using var writer = new StreamWriter(file);
Console.WriteLine($"Intrinsic with FmaWPtr Mult. results will be written into {file}");
#endif
unsafe
{
int i;
var ptr1 = (float *)Unsafe.AsPointer(ref span1[0]);
var ptr2 = (float *)Unsafe.AsPointer(ref span2[0]);
for (i = 0; i < vectCnt; i++)
{
var v1 = Avx.LoadVector256(ptr1);
var v2 = Avx.LoadVector256(ptr2);
v3 = Fma.MultiplyAdd(v1, v2, v3);
ptr1 += vectLen;
ptr2 += vectLen;
#if TEST
writer.WriteLine($"{v1.ToString()}\t{v2.ToString()}\t{v3.ToString()}");
#endif
}
for (i = 0; i < vectLen; i++)
{
total += v3.GetElement(i);
}
i = vectCnt * vectLen;
if (cnt % vectLen > 0)
{
ptr1 = (float *)Unsafe.AsPointer(ref span1[i]);
ptr2 = (float *)Unsafe.AsPointer(ref span2[i]);
for (; i < cnt; i++)
{
total += *ptr1++ **ptr2++;
}
}
}
if (vector1.Length != vector2.Length)
{
var h = vector1.Length > vector2.Length ? span1 : span2;
for (var j = cnt; j < h.Length; j++)
{
total += h[j];
}
}
return(total);
}
