Method BandedMatrix

GTE/Mathematics/BandedMatrix.h:23–65

Construction and destruction.

    public:
        // Construction and destruction.
        BandedMatrix(int32_t size, int32_t numLBands, int32_t numUBands)
            :
            mSize(size),
            mDBand{},
            mLBands{},
            mUBands{},
            mZero((Real)0)
        {
            if (size > 0
                && 0 <= numLBands && numLBands < size
                && 0 <= numUBands && numUBands < size)
            {
                mDBand.resize(size);
                std::fill(mDBand.begin(), mDBand.end(), (Real)0);

                if (numLBands > 0)
                {
                    mLBands.resize(numLBands);
                    int32_t numElements = size - 1;
                    for (auto& band : mLBands)
                    {
                        band.resize(numElements--);
                        std::fill(band.begin(), band.end(), (Real)0);
                    }
                }

                if (numUBands > 0)
                {
                    mUBands.resize(numUBands);
                    int32_t numElements = size - 1;
                    for (auto& band : mUBands)
                    {
                        band.resize(numElements--);
                        std::fill(band.begin(), band.end(), (Real)0);
                    }
                }
            }
            else
            {
                // Invalid argument to BandedMatrix constructor.
                mSize = 0;
            }
        }

        ~BandedMatrix()
        {