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HDF5 API Specification
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<h1>HDF5: API Specification<br>Reference Manual</h1>
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The HDF5 library provides several interfaces, each of which provides the
tools required to meet specific aspects of the HDF5 data-handling requirements.
<p>
See <a href="#F90andCPPlus">below</a> for the FORTRAN90 and C++ APIs.
<p>
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<table border=0 width=90%>
<tr><td valign=top><a href="RM_H5.html">Library Functions</a>
</td><td> </td><td valign=top>The general-purpose <strong>H5</strong> functions.
</td></tr>
<tr><td valign=top><a href="RM_H5A.html">Attribute Interface</a>
</td><td></td><td valign=top>The <strong>H5A</strong> API for attributes.
</td></tr>
<tr><td valign=top><a href="RM_H5D.html">Dataset Interface</a>
</td><td></td><td valign=top>The <strong>H5D</strong> API for manipulating scientific datasets.
</td></tr>
<tr><td valign=top><a href="RM_H5E.html">Error Interface</a>
</td><td></td><td valign=top>The <strong>H5E</strong> API for error handling.
</td></tr>
<tr><td valign=top><a href="RM_H5F.html">File Interface</a>
</td><td></td><td valign=top>The <strong>H5F</strong> API for accessing HDF files.
</td></tr>
<tr><td valign=top><a href="RM_H5G.html">Group Interface</a>
</td><td></td><td valign=top>The <strong>H5G</strong> API for creating physical groups of objects on disk.
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<tr><td valign=top><a href="RM_H5I.html">Identifier Interface</a>
</td><td></td><td valign=top>The <strong>H5I</strong> API for working with object identifiers.
</td></tr>
<tr><td valign=top><a href="RM_H5P.html">Property List Interface</a>
</td><td></td><td valign=top>The <strong>H5P</strong> API for manipulating object property lists.
</td></tr>
<tr><td valign=top><a href="RM_H5R.html">Reference Interface</a>
</td><td></td><td valign=top>The <strong>H5R</strong> API for references.
</td></tr>
<tr><td valign=top><a href="RM_H5S.html">Dataspace Interface</a>
</td><td></td><td valign=top>The <strong>H5S</strong> API for defining dataset dataspace.
</td></tr>
<tr><td valign=top><a href="RM_H5T.html">Datatype Interface</a>
</td><td></td><td valign=top>The <strong>H5T</strong> API for defining dataset element information.
</td></tr>
<tr><td valign=top><a href="RM_H5Z.html">Filters and</a><br>
<a href="RM_H5Z.html">Compression Interface</a>
</td><td></td><td valign=top>The <strong>H5Z</strong> API for inline data filters and data compression.
</td></tr>
<tr><td valign=top><a href="Tools.html">Tools</a>
</td><td></td><td valign=top>Interactive tools for the examination of existing HDF5 files.
</td></tr>
<tr><td valign=top><a href="PredefDTypes.html">Predefined Datatypes</a>
</td><td></td><td valign=top>Predefined datatypes in HDF5.
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<p>
A PDF version of this <cite>HDF5 Reference Manual</cite> will be available from
<a href="http://hdf.ncsa.uiuc.edu/HDF5/doc/PSandPDF/">
http://hdf.ncsa.uiuc.edu/HDF5/doc/PSandPDF/</a>
approximately one week after Release 1.6.1.
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<h3>The Fortran90 and C++ APIs to HDF5</h3>
</a>
The HDF5 Library distribution includes FORTRAN90 and C++ APIs,
which are described in the following documents.
<p>
<strong>Fortran90 API</strong>
<dir>
<a href="fortran/F90UserNotes.html" target="External">
<cite>HDF5 FORTRAN90 User's Notes</cite></a>
contains general information regarding the API.
Specific information on each API call is found in the
<cite>HDF5 Reference Manual</cite>.
<p>
<u>Fortran90 APIs in the <cite>Reference Manual</cite>:</u>
The current version of the <cite>HDF5 Reference Manual</cite> includes
descriptions of the Fortran90 APIs to HDF5.
Fortran subroutines exist in the H5, H5A, H5D, H5E, H5F, H5G, H5I, H5P,
H5R, H5S, H5T, and H5Z interfaces and are described on those pages.
In general, each Fortran subroutine performs exactly the same task
as the corresponding C function.
<p>
Whereas Fortran subroutines had been described on separate pages in
prior releases, those descriptions were fully integrated into the
body of the reference manual for HDF5 Release 1.6.2
(and mostly so for Release 1.6.1).
<p>
<a href="fortran/F90Flags.html" target="External">
<cite>HDF5 Fortran90 Flags and Datatypes</cite></a>
lists the flags employed in the Fortran90 interface and
contains a pointer to the HDF5 Fortran90 datatypes.
</dir>
<strong>C++ API</strong>
<dir>
<a href="cpplus/CppUserNotes.pdf" target="External">
<cite>HDF5 C++ User's Notes</cite></a>
<p>
<a href="cpplus/CppInterfaces.html" target="External">
<cite>HDF5 C++ Interfaces</cite></a>
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