mirror/hdf5
2
0
Fork 0
mirror of https://github.com/HDFGroup/hdf5.git synced 2025-03-25 17:00:45 +08:00
Code Issues Packages Projects Releases Wiki Activity

[svn-r5319]

Browse Source 
Purpose:
    1 new function; 3 revised functions; 2 bugfixes; copy edits
Solution:
    H5Tget_member_index: Added this new function.
    H5Tget_member_name: Revised, based on lessons learned with
        H5Tget_member_index.
    H5Tget_nmembers: Revised to indicate that function works for both
        compound and enumeration datatypes.
        --> Fixes Bug# 747.
    Cross-listed H5Tget_nmembers, H5Tget_member_index, and
        H5Tget_member_name under both compound and enum datatypes,
        as they work for both.
    H5Tset_tag: Corrected tag description (it is descriptive, uniqueness
        is not required).
    Corrected several spelling errors.
        --> Partially fixes Bug# 760 (though just for this file *sigh*).
Platforms tested:
    IE 5
This commit is contained in:
Frank Baker 2002-05-01 17:44:03 -05:00
parent 452d4c5719
commit add8f78ad5
1 changed files with 86 additions and 25 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

111
doc/html/RM_H5T.html
View File

@ -112,11 +112,15 @@ of a dataset.
<li><a href="#Datatype-EnumNameOf">H5Tenum_nameof</a>
<li><a href="#Datatype-EnumValueOf">H5Tenum_valueof</a>
<li><a href="#Datatype-GetMemberValue">H5Tget_member_value</a>
<li><a href="#Datatype-GetNmembers">H5Tget_nmembers</a>
<li><a href="#Datatype-GetMemberName">H5Tget_member_name</a>
<li><a href="#Datatype-GetMemberIndex">H5Tget_member_index</a>
</td><td>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</td><td valign=top>
<i>Compound Datatype Properties</i>
<li><a href="#Datatype-GetNmembers">H5Tget_nmembers</a>
<li><a href="#Datatype-GetMemberClass">H5Tget_member_class</a>
<li><a href="#Datatype-GetMemberName">H5Tget_member_name</a>
<li><a href="#Datatype-GetMemberIndex">H5Tget_member_index</a>
<li><a href="#Datatype-GetMemberOffset">H5Tget_member_offset</a>
<li><a href="#Datatype-GetMemberType">H5Tget_member_type</a>
<li><a href="#Datatype-Insert">H5Tinsert</a>
@ -216,6 +220,7 @@ facilitate moving easily between them.</i>
<li><a href="#Datatype-GetNmembers">h5tget_nmembers_f</a>
<!--<li><a href="#Datatype-GetMemberClass">H5Tget_member_class_f</a> -->
<li><a href="#Datatype-GetMemberName">h5tget_member_name_f</a>
<!--<li><a href="#Datatype-GetMemberIndex">h5tget_member_index_f</a> -->
<li><a href="#Datatype-GetMemberOffset">h5tget_member_offset_f</a>
<!--<li><a href="#Datatype-GetMemberDims">h5tget_member_dims_f</a> -->
<li><a href="#Datatype-GetMemberType">h5tget_member_type_f</a>
@ -229,6 +234,9 @@ facilitate moving easily between them.</i>
<li><a href="#Datatype-EnumNameOf">h5tenum_nameof_f</a>
<li><a href="#Datatype-EnumValueOf">h5tenum_valueof_f</a>
<li><a href="#Datatype-GetMemberValue">h5tget_member_value_f</a>
<li><a href="#Datatype-GetNmembers">h5tget_nmembers_f</a>
<li><a href="#Datatype-GetMemberName">h5tget_member_name_f</a>
<!--<li><a href="#Datatype-GetMemberIndex">h5tget_member_index_f</a> -->
<p>
<i>Opaque Datatypes</i>
<li><a href="#Datatype-SetTag">h5tset_tag_f</a>
@ -559,9 +567,9 @@ H5Tget_overflow ()
<em>size_t</em><code>size</code>
)
<dt><strong>Purpose:</strong>
<dd>Creates a new dataype.
<dd>Creates a new datatype.
<dt><strong>Description:</strong>
<dd><code>H5Tcreate</code> creates a new dataype of the specified
<dd><code>H5Tcreate</code> creates a new datatype of the specified
class with the specified number of bytes.
<p>
The following datatype classes are supported with this function:
@ -602,9 +610,9 @@ H5Tget_overflow ()
<dd><em>hid_t </em><code>H5Tvlen_create</code>(<em>hid_t </em><code>base_type_id</code>
)
<dt><strong>Purpose:</strong>
<dd>Creates a new variable-length dataype.
<dd>Creates a new variable-length datatype.
<dt><strong>Description:</strong>
<dd><code>H5Tvlen_create</code> creates a new variable-length (VL) dataype.
<dd><code>H5Tvlen_create</code> creates a new variable-length (VL) datatype.
<p>
The base datatype will be the datatype that the sequence is composed of,
characters for character strings, vertex coordinates for polygon lists, etc.
@ -777,7 +785,7 @@ H5Tget_overflow ()
<dt><strong>Description:</strong>
<dd><code>H5Tlock</code> locks the datatype specified by the
<code>type_id</code> identifier, making it read-only and
non-destrucible. This is normally done by the library for
non-destructible. This is normally done by the library for
predefined datatypes so the application does not
inadvertently change or delete a predefined type.
Once a datatype is locked it can never be unlocked.
@ -1102,11 +1110,11 @@ H5Tget_overflow ()
<dd>Retrieves the bit offset of the first significant bit.
<dt><strong>Description:</strong>
<dd><code>H5Tget_offset</code> retrieves the bit offset of the first significant bit.
The signficant bits of an atomic datum can be offset from the beginning
The significant bits of an atomic datum can be offset from the beginning
of the memory for that datum by an amount of padding. The `offset'
property specifies the number of bits of padding that appear to the
"right of" the value. That is, if we have a 32-bit datum with 16-bits
of precision having the value 0x1122 then it will be layed out in
of precision having the value 0x1122 then it will be laid out in
memory as (from small byte address toward larger byte addresses):
<br>
<br>
@ -1177,11 +1185,11 @@ H5Tget_overflow ()
<dd>Sets the bit offset of the first significant bit.
<dt><strong>Description:</strong>
<dd><code>H5Tset_offset</code> sets the bit offset of the first significant bit. The
signficant bits of an atomic datum can be offset from the beginning of
significant bits of an atomic datum can be offset from the beginning of
the memory for that datum by an amount of padding. The `offset'
property specifies the number of bits of padding that appear to the
"right of" the value. That is, if we have a 32-bit datum with 16-bits
of precision having the value 0x1122 then it will be layed out in
of precision having the value 0x1122 then it will be laid out in
memory as (from small byte address toward larger byte addresses):
<br>
<br>
@ -1380,9 +1388,9 @@ zero.
<em>H5T_sign_t</em> <code>sign</code>
)
<dt><strong>Purpose:</strong>
<dd>Sets the sign proprety for an integer type.
<dd>Sets the sign property for an integer type.
<dt><strong>Description:</strong>
<dd><code>H5Tset_sign</code> sets the sign proprety for an integer type.
<dd><code>H5Tset_sign</code> sets the sign property for an integer type.
<ul> <dl>
<dt>H5T_SGN_NONE (<code>0</code>)
<dd>Unsigned integer type.
@ -1892,16 +1900,18 @@ zero.
<dd><em>int </em><code>H5Tget_nmembers</code>(<em>hid_t </em><code>type_id</code>
)
<dt><strong>Purpose:</strong>
<dd>Retrieves the number of fields in a compound datatype.
<dd>Retrieves the number of elements in a compound or enumeration datatype.
<dt><strong>Description:</strong>
<dd><code>H5Tget_nmembers</code> retrieves the number of fields a compound datatype has.
<dd><code>H5Tget_nmembers</code> retrieves
the number of fields in a compound datatype or
the number of members of an enumeration datatype.
<dt><strong>Parameters:</strong>
<dl>
<dt><em>hid_t</em> <code>type_id</code>
<dd>Identifier of datatype to query.
</dl>
<dt><strong>Returns:</strong>
<dd>Returns number of members datatype has if successful;
<dd>Returns the number of elements if successful;
otherwise returns a negative value.
<dt><strong>Non-C API(s):</strong>
<dd><a href="fortran/h5t_FORTRAN.html#h5tget_nmembers_f"
@ -1957,24 +1967,33 @@ zero.
<em>int</em> <code>field_idx</code>
)
<dt><strong>Purpose:</strong>
<dd>Retrieves the name of a field of a compound datatype.
<dd>Retrieves the name of a compound or enumeration datatype member.
<dt><strong>Description:</strong>
<dd><code>H5Tget_member_name</code> retrieves the name of a field
of a compound datatype. Fields are stored in no particular
order, with indexes 0 through N-1, where N is the value returned
by <code>H5Tget_nmembers()</code>. The name of the field is
of a compound datatype or an element of an enumeration datatype.
<p>
The index of the target field or element is specified in
<code>field_idx</code>.
Compound datatype fields and enumeration datatype elements
are stored in no particular order
with index values of 0 through <em>N</em>-1, where <em>N</em>
is the value returned by <code>H5Tget_nmembers</code>.
<p>
A buffer to receive the name of the field is
allocated with <code>malloc()</code> and the caller is responsible
for freeing the memory used by the name.
for freeing the memory used.
<dt><strong>Parameters:</strong>
<dl>
<dt><em>hid_t</em> <code>type_id</code>
<dd>Identifier of datatype to query.
<dt><em>int</em> <code>field_idx</code>
<dd>Field index (0-based) of the field name to retrieve.
<dd>Zero-based index of the field or element whose name
is to be retrieved.
</dl>
<dt><strong>Returns:</strong>
<dd>Returns a valid pointer if successful;
otherwise NULL.
<dd>Returns a valid pointer to a string allocated with
<code>malloc()</code> if successful;
otherwise returns NULL.
<dt><strong>Non-C API(s):</strong>
<dd><a href="fortran/h5t_FORTRAN.html#h5tget_member_name_f"
target="FortranWin"><img src="Graphics/FORTRAN.gif" border=0></a>
@ -1985,6 +2004,47 @@ zero.
</dl>
<hr>
<dl>
<dt><strong>Name:</strong> <a name="Datatype-GetMemberIndex">H5Tget_member_index</a>
<dt><strong>Signature:</strong>
<dd><em>int</em> <code>H5Tget_member_index</code>(<em>hid_t </em><code>type_id</code>,
<em>const char *</em> <code>field_name</code>
)
<dt><strong>Purpose:</strong>
<dd>Retrieves the index of a compound or enumeration datatype member.
<dt><strong>Description:</strong>
<dd><code>H5Tget_member_index</code> retrieves the index of a field
of a compound datatype or an element of an enumeration datatype.
<p>
The name of the target field or element is specified in
<code>field_name</code>.
<p>
Fields are stored in no particular order
with index values of 0 through <em>N</em>-1, where <em>N</em> is
the value returned by <code>H5Tget_nmembers</code>.
<dt><strong>Parameters:</strong>
<dl>
<dt><em>hid_t</em> <code>type_id</code>
<dd>Identifier of datatype to query.
<dt><em>const char *</em> <code>field_name</code>
<dd>Name of the field or member whose index is to be retrieved.
</dl>
<dt><strong>Returns:</strong>
<dd>Returns a valid field or member index if successful;
otherwise returns a negative value.
<!--
<dt><strong>Non-C API(s):</strong>
<dd><a href="fortran/h5t_FORTRAN.html#h5tget_member_index_f"
target="FortranWin"><img src="Graphics/FORTRAN.gif" border=0></a>
-->
<!--
<img src="Graphics/Java.gif">
<img src="Graphics/C++.gif">
-->
</dl>
<hr>
<dl>
<dt><strong>Name:</strong> <a name="Datatype-GetMemberOffset">H5Tget_member_offset</a>
@ -2472,13 +2532,14 @@ zero.
<dd>Tags an opaque datatype.
<dt><strong>Description:</strong>
<dd><code>H5Tset_tag</code> tags an opaque datatype <code>type_id</code>
with a unique ASCII identifier <code>tag</code>.
with a descriptive ASCII identifier,<code> tag</code>.
<dt><strong>Parameters:</strong>
<dl>
<dt><em>hid_t</em> <code>type_id</code>
<dd>IN: Datatype identifier for the opaque datatype to be tagged.
<dt><em>const char</em> *<code>tag</code>
<dd>IN: Unique ASCII string with which the opaque datatype is to be tagged.
<dd>IN: Descriptive ASCII string with which the
opaque datatype is to be tagged.
</dl>
<dt><strong>Returns:</strong>
<dd>Returns a non-negative value if successful;
@ -2728,7 +2789,7 @@ H5T&nbsp;&nbsp;
<a href="mailto:hdfhelp@ncsa.uiuc.edu">HDF Help Desk</a>
<br>
Last modified: 2 August 2001
Last modified: 1 May 2002
<br>
Describes HDF5 Release 1.5, Unreleased Development Branch