//-----------------------------------------------------------------------
// -----------------------------------------------------------------------
// file="MatrixCompute.Basic"
// Project: StgSharp
// AuthorGroup: Nitload
// Copyright (c) Nitload. All rights reserved.
//     
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
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// -----------------------------------------------------------------------
// -----------------------------------------------------------------------
using StgSharp.HighPerformance;
using StgSharp.Internal;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Security.AccessControl;
using System.Text;
using System.Threading.Tasks;

namespace StgSharp.Mathematics.Numeric
{
    public static class MatrixCompute
    {

        public static unsafe Matrix<float> Add(Matrix<float> left, Matrix<float> right)
        {
            if (left.ColumnLength != right.ColumnLength || left.RowLength != right.RowLength) {
                throw new IndexOutOfRangeException("Matrix dimensions must agree.");
            }
            Matrix<float> ans = Matrix<float>.FromDefault(left.ColumnLength, left.RowLength);
            if (left.KernelColumnLength * left.KernelRowLength <= 1024)
            {
                MatrixParallelPool pool = MatrixParallel.LeadParallel();
                if (!pool.TryRentIndividualHandle(out MatrixParallelWrap.Handle? handle)) { }
                MatrixSegmentEnumeration<float>.Enumerator leftEnum = left.GetColumnEnumeration().GetEnumerator();
                MatrixSegmentEnumeration<float>.Enumerator rightEnum = right.GetColumnEnumeration().GetEnumerator();
                MatrixSegmentEnumeration<float>.Enumerator ansEnum = ans.GetColumnEnumeration().GetEnumerator();

                for (int i = 0; i < left.KernelColumnLength; i++)
                {
                    MatrixSegment<float>.Enumerator leftColumEnum = leftEnum.Current.GetEnumerator();
                    MatrixSegment<float>.Enumerator rightColumEnum = rightEnum.Current.GetEnumerator();
                    MatrixSegment<float>.Enumerator ansColumEnum = ansEnum.Current.GetEnumerator();
                }
                return ans;
            }
            Stack<MatrixParallelWrap> taskGroup = MatrixParallel.PublicTask(left.GetColumnEnumeration(), right.GetColumnEnumeration(), ans.GetColumnEnumeration(),
                (delegate*<MatrixKernel<float>*, MatrixKernel<float>*, MatrixKernel<float>*, void>)NativeIntrinsic.Intrinsic.f32_add);
            return ans;
        }

    }
}