void zofits::copyTransposeTile ( const char *  src, char *  dest, uint32_t  num_rows  )

inlineprotected

Transpose a tile to a new buffer

Parameters

src	buffer hosting the regular, row-ordered data
dest	the target buffer that will receive the transposed data

Definition at line 851 of file zofits.h.

References i, FITS::kOrderByCol, and FITS::kOrderByRow.

        {
            const uint32_t thisRoundNumRows = (num_rows%fNumRowsPerTile) ? num_rows%fNumRowsPerTile : fNumRowsPerTile;

            //copy the tile and transpose it
            for (uint32_t i=0;i<fRealColumns.size();i++)
            {
                switch (fRealColumns[i].block_head.getOrdering())
                {
                case FITS::kOrderByRow:
                    //regular, "semi-transposed" copy
                    for (uint32_t k=0;k<thisRoundNumRows;k++)
                    {
                        memcpy(dest, src+k*fRealRowWidth+fRealColumns[i].col.offset, fRealColumns[i].col.size*fRealColumns[i].col.num);
                        dest += fRealColumns[i].col.size*fRealColumns[i].col.num;
                    }
                    break;

                case FITS::kOrderByCol:
                    //transposed copy
                    for (uint32_t j=0;j<fRealColumns[i].col.num;j++)
                        for (uint32_t k=0;k<thisRoundNumRows;k++)
                        {
                            memcpy(dest, src+k*fRealRowWidth+fRealColumns[i].col.offset+fRealColumns[i].col.size*j, fRealColumns[i].col.size);
                            dest += fRealColumns[i].col.size;
                        }
                    break;
                };
            }
        }