dlap_io/dlap_io.html

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      DLAP_IO - Read and Write DLAP Sparse Matrix Files
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      DLAP_IO<br>
      DLAP Sparse Matrix Files<br>
      Read and Write Utilities
    </h1>

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    <p>
      <b>DLAP_IO</b>
      is a FORTRAN90 library which
      reads and writes files in the DLAP sparse matrix format, used by
      DLAP, the Sparse Linear Algebra Package.
    </p>

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      Licensing:
    </h3>

    <p>
      The computer code and data files described and made available on this web page
      are distributed under
      <a href = "../../txt/gnu_lgpl.txt">the GNU LGPL license.</a>
    </p>

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      Related Data and Programs:
    </h3>

    <p>
      <a href = "../../f_src/dlap/dlap.html">
      DLAP</a>,
      a FORTRAN90 library which
      solves sparse linear systems.
    </p>

    <p>
      <a href = "../../f_src/hb_io/hb_io.html">
      HB_IO</a>,
      a FORTRAN90 library which
      reads and writes sparse linear
      systems stored in the Harwell-Boeing Sparse Matrix format.
    </p>

    <p>
      <a href = "../../f_src/hb_to_st/hb_to_st.html">
      HB_TO_ST</a>,
      a FORTRAN90 program which
      converts the sparse matrix information stored in a Harwell-Boeing
      file into a sparse triplet file.
    </p>

    <p>
      <a href = "../../f_src/mm_io/mm_io.html">
      MM_IO</a>,
      a FORTRAN90 library which
      reads and writes sparse linear
      systems stored in the Matrix Market format.
    </p>

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      Reference:
    </h3>

    <p>
      <ol>
        <li>
          Iain Duff, Roger Grimes, John Lewis,<br>
          User's Guide for the Harwell-Boeing Sparse Matrix Collection,<br>
          October 1992.
        </li>
      </ol>
    </p>

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      Source Code:
    </h3>

    <p>
      <ul>
        <li>
          <a href = "dlap_io.f90">dlap_io.f90</a>, the source code.
        </li>
        <li>
          <a href = "dlap_io.sh">dlap_io.sh</a>,
          commands to compile the source code.
        </li>
      </ul>
    </p>

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      Examples and Tests:
    </h3>

    <p>
      <ul>
        <li>
          <a href = "dlap_io_prb.f90">dlapb_io_prb.f90</a>,
          a sample calling program.
        </li>
        <li>
          <a href = "dlap_io_prb.sh">dlapb_io_prb.sh</a>,
          commands to compile and run the sample program.
        </li>
        <li>
          <a href = ".dlap_io_prb_output.txt">dlap_io_prb_output.txt</a>,
          the output file.
        </li>
        <li>
          <a href = "../../data/dlap/a5by5.dlap">../../data/dlap/a5by5.dlap</a>,
          a 5 by 5 matrix, right hand side, and solution, created by one routine
         in the calling program and read by another.
        </li>
        <li>
          <a href = "../../data/dlap/a5by5_sym.dlap">../../data/dlap/a5by5_sym.dlap</a>,
          a 5 by 5 symmetric matrix, right hand side, and solution, created by one routine
         in the calling program and read by another.
        </li>
      </ul>
    </p>

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      List of Routines:
    </h3>

    <p>
      <ul>
        <li>
          <b>DLAP_FILE_PRINT</b> prints a DLAP linear system that was stored in a file.
        </li>
        <li>
          <b>DLAP_FILE_READ</b> reads in a DLAP matrix contained in a file.
        </li>
        <li>
          <b>DLAP_FILE_WRITE</b> writes out DLAP Triad Format Linear System.
        </li>
        <li>
          <b>DLAP_HEADER_PRINT</b> prints the header line of a DLAP file.
        </li>
        <li>
          <b>DLAP_HEADER_READ</b> reads the header line from a DLAP file.
        </li>
        <li>
          <b>DLAP_HEADER_WRITE</b> writes the header line to a DLAP file.
        </li>
        <li>
          <b>DLAP_RHS_PRINT</b> prints the right hand side vector from a DLAP file.
        </li>
        <li>
          <b>DLAP_RHS_READ</b> reads the right hand side vector from a DLAP file.
        </li>
        <li>
          <b>DLAP_RHS_WRITE</b> writes a right hand side vector to a DLAP file.
        </li>
        <li>
          <b>DLAP_SOLN_PRINT</b> prints the solution vector from a DLAP file.
        </li>
        <li>
          <b>DLAP_SOLN_READ</b> reads the solution vector from a DLAP file.
        </li>
        <li>
          <b>DLAP_SOLN_WRITE</b> writes a solution vector to a DLAP file.
        </li>
        <li>
          <b>DS3_PRINT</b> prints a DS3 matrix.
        </li>
        <li>
          <b>DS3_PRINT_SOME</b> prints some of a DS3 matrix.
        </li>
        <li>
          <b>GET_UNIT</b> returns a free FORTRAN unit number.
        </li>
        <li>
          <b>R8VEC_PRINT</b> prints an R8VEC.
        </li>
        <li>
          <b>R8VEC_PRINT_SOME</b> prints "some" of an R8VEC.
        </li>
        <li>
          <b>TIMESTAMP</b> prints the current YMDHMS date as a time stamp.
        </li>
      </ul>
    </p>

    <p>
      You can go up one level to <a href = "../f_src.html">
      the FORTRAN90 source codes</a>.
    </p>

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    <i>
      Last revised on 27 November 2006.
    </i>

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