public static void MatTimesSrc(bool tran, AlignedArray mat, AlignedArray src, AlignedArray dst, int crun)
{
Contracts.Assert(mat.Size == dst.Size * src.Size);
Contracts.Assert(crun >= 0);
if (Avx.IsSupported)
{
if (!tran)
{
Contracts.Assert(crun <= dst.Size);
AvxIntrinsics.MatMul(mat, src, dst, crun, src.Size);
}
else
{
Contracts.Assert(crun <= src.Size);
AvxIntrinsics.MatMulTran(mat, src, dst, dst.Size, crun);
}
}
else if (Sse.IsSupported)
{
if (!tran)
{
Contracts.Assert(crun <= dst.Size);
SseIntrinsics.MatMul(mat, src, dst, crun, src.Size);
}
else
{
Contracts.Assert(crun <= src.Size);
SseIntrinsics.MatMulTran(mat, src, dst, dst.Size, crun);
}
}
else
{
if (!tran)
{
Contracts.Assert(crun <= dst.Size);
for (int i = 0; i < crun; i++)
{
float dotProduct = 0;
for (int j = 0; j < src.Size; j++)
{
dotProduct += mat[i * src.Size + j] * src[j];
}
dst[i] = dotProduct;
}
}
else
{
Contracts.Assert(crun <= src.Size);
for (int i = 0; i < dst.Size; i++)
{
float dotProduct = 0;
for (int j = 0; j < crun; j++)
{
dotProduct += mat[j * src.Size + i] * src[j];
}
dst[i] = dotProduct;
}
}
}
}
public static void MatrixTimesSource(bool transpose, AlignedArray matrix, AlignedArray source, AlignedArray destination, int stride)
{
Contracts.Assert(matrix.Size == destination.Size * source.Size);
Contracts.Assert(stride >= 0);
if (Avx.IsSupported)
{
if (!transpose)
{
Contracts.Assert(stride <= destination.Size);
AvxIntrinsics.MatMul(matrix, source, destination, stride, source.Size);
}
else
{
Contracts.Assert(stride <= source.Size);
AvxIntrinsics.MatMulTran(matrix, source, destination, destination.Size, stride);
}
}
else if (Sse.IsSupported)
{
if (!transpose)
{
Contracts.Assert(stride <= destination.Size);
SseIntrinsics.MatMul(matrix, source, destination, stride, source.Size);
}
else
{
Contracts.Assert(stride <= source.Size);
SseIntrinsics.MatMulTran(matrix, source, destination, destination.Size, stride);
}
}
else
{
if (!transpose)
{
Contracts.Assert(stride <= destination.Size);
for (int i = 0; i < stride; i++)
{
float dotProduct = 0;
for (int j = 0; j < source.Size; j++)
{
dotProduct += matrix[i * source.Size + j] * source[j];
}
destination[i] = dotProduct;
}
}
else
{
Contracts.Assert(stride <= source.Size);
for (int i = 0; i < destination.Size; i++)
{
float dotProduct = 0;
for (int j = 0; j < stride; j++)
{
dotProduct += matrix[j * source.Size + i] * source[j];
}
destination[i] = dotProduct;
}
}
}
}
public static void MatrixTimesSource(bool transpose, ReadOnlySpan <float> matrix, ReadOnlySpan <float> source, Span <float> destination, int stride)
{
Contracts.AssertNonEmpty(matrix);
Contracts.AssertNonEmpty(source);
Contracts.AssertNonEmpty(destination);
Contracts.Assert(matrix.Length == destination.Length * source.Length);
Contracts.Assert(stride >= 0);
if (!transpose)
{
if (Avx.IsSupported && source.Length >= 8)
{
Contracts.Assert(stride <= destination.Length);
AvxIntrinsics.MatMul(matrix, source, destination, stride, source.Length);
}
else if (Sse.IsSupported && source.Length >= 4)
{
Contracts.Assert(stride <= destination.Length);
SseIntrinsics.MatMul(matrix, source, destination, stride, source.Length);
}
else
{
Contracts.Assert(stride <= destination.Length);
for (int i = 0; i < stride; i++)
{
float dotProduct = 0;
for (int j = 0; j < source.Length; j++)
{
dotProduct += matrix[i * source.Length + j] * source[j];
}
destination[i] = dotProduct;
}
}
}
else
{
if (Avx.IsSupported && destination.Length >= 8)
{
Contracts.Assert(stride <= source.Length);
AvxIntrinsics.MatMulTran(matrix, source, destination, destination.Length, stride);
}
else if (Sse.IsSupported && destination.Length >= 4)
{
Contracts.Assert(stride <= source.Length);
SseIntrinsics.MatMulTran(matrix, source, destination, destination.Length, stride);
}
else
{
Contracts.Assert(stride <= source.Length);
for (int i = 0; i < destination.Length; i++)
{
float dotProduct = 0;
for (int j = 0; j < stride; j++)
{
dotProduct += matrix[j * destination.Length + i] * source[j];
}
destination[i] = dotProduct;
}
}
}
}