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author | Frank Baker <fbaker@hdfgroup.org> | 2002-05-01 22:44:03 (GMT) |
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committer | Frank Baker <fbaker@hdfgroup.org> | 2002-05-01 22:44:03 (GMT) |
commit | add8f78ad50db88e8dfd9664099fbc9b50065ca5 (patch) | |
tree | 1ddf74cd3dd942d7ed38538c40febb984491ed35 /doc/html/RM_H5T.html | |
parent | 452d4c571973d54b964393476ebb380420ca23f3 (diff) | |
download | hdf5-add8f78ad50db88e8dfd9664099fbc9b50065ca5.zip hdf5-add8f78ad50db88e8dfd9664099fbc9b50065ca5.tar.gz hdf5-add8f78ad50db88e8dfd9664099fbc9b50065ca5.tar.bz2 |
[svn-r5319]
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
Diffstat (limited to 'doc/html/RM_H5T.html')
-rw-r--r-- | doc/html/RM_H5T.html | 111 |
1 files changed, 86 insertions, 25 deletions
diff --git a/doc/html/RM_H5T.html b/doc/html/RM_H5T.html index 76dfa11..c246f23 100644 --- a/doc/html/RM_H5T.html +++ b/doc/html/RM_H5T.html @@ -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> </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> @@ -1987,6 +2006,47 @@ zero. <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> <dt><strong>Signature:</strong> <dd><em>size_t</em> <code>H5Tget_member_offset</code>(<em>hid_t </em><code>type_id</code>, @@ -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 <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 |