Integer Mandlebrot (.8 fixed point)

        const int scale = 256;
        const int squarescale = 4 * scale;

        int mand_rect_int_left = -533;
        int mand_rect_int_top = -330;
        int mand_rect_int_xadd = 7;
        int mand_rect_int_yadd = 7;
        int mand_z_x_base_int;
        int mand_z_y_base_int;
        int mand_z_x_int;
        int mand_z_y_int;
        int mand_c_x_int;
        int mand_c_y_int;
        int mand_x_int;
        int mand_y_int;
        int iters_int;

        void DrawMandelbrotInt()
        {
            mand_z_y_base_int = mand_rect_int_top;
            mand_y_int = 0;
            for (; mand_y_int < MANDEL_HEIGHT; mand_y_int++, mand_z_y_base_int += mand_rect_int_yadd)
            {
                mand_z_x_base_int = mand_rect_int_left;
                mand_x_int = 0;
                for (; mand_x_int < MANDEL_WIDTH; mand_x_int++, mand_z_x_base_int += mand_rect_int_xadd)
                {
                    CalcMandelPixelInt();
                    if (iters_int == 0)
                        _frameBuffer[mand_y_int * MANDEL_WIDTH + mand_x_int] = _RGBI_palette[0];
                    else
                        _frameBuffer[mand_y_int * MANDEL_WIDTH + mand_x_int] = _RGBI_palette[((iters_int + 15) % 15) + 1];
                }
            }
        }

        void CalcMandelPixelInt()
        {
            mand_z_x_int = mand_z_x_base_int;
            mand_z_y_int = mand_z_y_base_int;
            mand_c_x_int = mand_z_x_int;
            mand_c_y_int = mand_z_y_int;

            iters_int = 0;

            while (iters_int < MAX_ITERS)
            {
                iters_int++;
                int mand_z_x_sqr = (mand_z_x_int * mand_z_x_int) >> 8;
                int mand_z_y_sqr = (mand_z_y_int * mand_z_y_int) >> 8;
                int sqrlen = mand_z_x_sqr + mand_z_y_sqr;

                if (sqrlen > squarescale)
                    return;

                int r = mand_z_x_sqr - mand_z_y_sqr + mand_c_x_int;
                int i = ((mand_z_x_int * mand_z_y_int * 2) >> 8) + mand_c_y_int;
                mand_z_x_int = r;
                mand_z_y_int = i;
            }

            iters_int = 0;
            return;
        }