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README.html
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"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en"> <html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en">
<head> <head>
<!-- 2022-06-03 Fri 07:50 --> <!-- 2022-06-03 Fri 07:52 -->
<meta http-equiv="Content-Type" content="text/html;charset=utf-8" /> <meta http-equiv="Content-Type" content="text/html;charset=utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1" /> <meta name="viewport" content="width=device-width, initial-scale=1" />
<title>TREXIO source code documentation</title> <title>TREXIO source code documentation</title>
@ -347,7 +347,7 @@ and bug reports should be submitted at
</div> </div>
<div id="postamble" class="status"> <div id="postamble" class="status">
<p class="author">Author: TREX-CoE</p> <p class="author">Author: TREX-CoE</p>
<p class="date">Created: 2022-06-03 Fri 07:50</p> <p class="date">Created: 2022-06-03 Fri 07:52</p>
<p class="validation"><a href="http://validator.w3.org/check?uri=referer">Validate</a></p> <p class="validation"><a href="http://validator.w3.org/check?uri=referer">Validate</a></p>
</div> </div>
</body> </body>

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"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en"> <html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en">
<head> <head>
<!-- 2022-06-03 Fri 07:50 --> <!-- 2022-06-03 Fri 07:52 -->
<meta http-equiv="Content-Type" content="text/html;charset=utf-8" /> <meta http-equiv="Content-Type" content="text/html;charset=utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1" /> <meta name="viewport" content="width=device-width, initial-scale=1" />
<title>Examples</title> <title>Examples</title>
@ -333,24 +333,24 @@ for the JavaScript code in this tag.
<h2>Table of Contents</h2> <h2>Table of Contents</h2>
<div id="text-table-of-contents"> <div id="text-table-of-contents">
<ul> <ul>
<li><a href="#orgc59a7fe">1. Accessing sparse quantities</a> <li><a href="#org2b0a3c0">1. Accessing sparse quantities</a>
<ul> <ul>
<li><a href="#org591fe9e">1.1. Fortran</a> <li><a href="#orge33bde1">1.1. Fortran</a>
<ul> <ul>
<li><a href="#org97f6664">1.1.1. Declare Temporary variables</a></li> <li><a href="#orgc8440f3">1.1.1. Declare Temporary variables</a></li>
<li><a href="#org600570d">1.1.2. Obtain the name of the TREXIO file from the command line, and open it for reading</a></li> <li><a href="#org319a7c0">1.1.2. Obtain the name of the TREXIO file from the command line, and open it for reading</a></li>
<li><a href="#org209f1f3">1.1.3. Read the nuclear repulsion energy</a></li> <li><a href="#orgd294e48">1.1.3. Read the nuclear repulsion energy</a></li>
<li><a href="#orgcc397ae">1.1.4. Read the number of molecular orbitals</a></li> <li><a href="#orgc3f7b93">1.1.4. Read the number of molecular orbitals</a></li>
<li><a href="#orga37af36">1.1.5. Allocate memory</a></li> <li><a href="#org2b36df3">1.1.5. Allocate memory</a></li>
<li><a href="#orgb20d6cb">1.1.6. Read one-electron quantities</a></li> <li><a href="#orgc85fe92">1.1.6. Read one-electron quantities</a></li>
<li><a href="#org2a736ad">1.1.7. Read two-electron quantities</a> <li><a href="#orgd8fead8">1.1.7. Read two-electron quantities</a>
<ul> <ul>
<li><a href="#orgc2b43ec">1.1.7.1. Electron repulsion integrals</a></li> <li><a href="#orgbe4da69">1.1.7.1. Electron repulsion integrals</a></li>
<li><a href="#orgea7c720">1.1.7.2. Reduced density matrix</a></li> <li><a href="#orgcac6ecf">1.1.7.2. Reduced density matrix</a></li>
</ul> </ul>
</li> </li>
<li><a href="#org0499bf9">1.1.8. Compute the energy</a></li> <li><a href="#org017d5b6">1.1.8. Compute the energy</a></li>
<li><a href="#org92602b6">1.1.9. Terminate</a></li> <li><a href="#orgd01af70">1.1.9. Terminate</a></li>
</ul> </ul>
</li> </li>
</ul> </ul>
@ -360,12 +360,12 @@ for the JavaScript code in this tag.
</div> </div>
<div id="outline-container-orgc59a7fe" class="outline-2"> <div id="outline-container-org2b0a3c0" class="outline-2">
<h2 id="orgc59a7fe"><span class="section-number-2">1</span> Accessing sparse quantities</h2> <h2 id="org2b0a3c0"><span class="section-number-2">1</span> Accessing sparse quantities</h2>
<div class="outline-text-2" id="text-1"> <div class="outline-text-2" id="text-1">
</div> </div>
<div id="outline-container-org591fe9e" class="outline-3"> <div id="outline-container-orge33bde1" class="outline-3">
<h3 id="org591fe9e"><span class="section-number-3">1.1</span> Fortran</h3> <h3 id="orge33bde1"><span class="section-number-3">1.1</span> Fortran</h3>
<div class="outline-text-3" id="text-1-1"> <div class="outline-text-3" id="text-1-1">
<div class="org-src-container"> <div class="org-src-container">
<pre class="src src-f90"><span style="color: #a020f0;">program</span> <span style="color: #0000ff;">print_energy</span> <pre class="src src-f90"><span style="color: #a020f0;">program</span> <span style="color: #0000ff;">print_energy</span>
@ -411,8 +411,8 @@ One needs to read from the TREXIO file:
</div> </div>
</div> </div>
<div id="outline-container-org97f6664" class="outline-4"> <div id="outline-container-orgc8440f3" class="outline-4">
<h4 id="org97f6664"><span class="section-number-4">1.1.1</span> Declare Temporary variables</h4> <h4 id="orgc8440f3"><span class="section-number-4">1.1.1</span> Declare Temporary variables</h4>
<div class="outline-text-4" id="text-1-1-1"> <div class="outline-text-4" id="text-1-1-1">
<div class="org-src-container"> <div class="org-src-container">
<pre class="src src-f90"><span style="color: #228b22;">integer</span> ::<span style="color: #a0522d;"> i, j, k, l, m</span> <pre class="src src-f90"><span style="color: #228b22;">integer</span> ::<span style="color: #a0522d;"> i, j, k, l, m</span>
@ -427,8 +427,8 @@ One needs to read from the TREXIO file:
</div> </div>
</div> </div>
<div id="outline-container-org600570d" class="outline-4"> <div id="outline-container-org319a7c0" class="outline-4">
<h4 id="org600570d"><span class="section-number-4">1.1.2</span> Obtain the name of the TREXIO file from the command line, and open it for reading</h4> <h4 id="org319a7c0"><span class="section-number-4">1.1.2</span> Obtain the name of the TREXIO file from the command line, and open it for reading</h4>
<div class="outline-text-4" id="text-1-1-2"> <div class="outline-text-4" id="text-1-1-2">
<div class="org-src-container"> <div class="org-src-container">
<pre class="src src-f90"><span style="color: #a020f0;">call</span> <span style="color: #0000ff;">getarg</span>(1, filename) <pre class="src src-f90"><span style="color: #a020f0;">call</span> <span style="color: #0000ff;">getarg</span>(1, filename)
@ -444,8 +444,8 @@ f = trexio_open (filename, <span style="color: #8b2252;">'r'</span>, TREXIO_HDF5
</div> </div>
</div> </div>
<div id="outline-container-org209f1f3" class="outline-4"> <div id="outline-container-orgd294e48" class="outline-4">
<h4 id="org209f1f3"><span class="section-number-4">1.1.3</span> Read the nuclear repulsion energy</h4> <h4 id="orgd294e48"><span class="section-number-4">1.1.3</span> Read the nuclear repulsion energy</h4>
<div class="outline-text-4" id="text-1-1-3"> <div class="outline-text-4" id="text-1-1-3">
<div class="org-src-container"> <div class="org-src-container">
<pre class="src src-f90">rc = trexio_read_nucleus_repulsion(f, E_nn) <pre class="src src-f90">rc = trexio_read_nucleus_repulsion(f, E_nn)
@ -459,8 +459,8 @@ f = trexio_open (filename, <span style="color: #8b2252;">'r'</span>, TREXIO_HDF5
</div> </div>
</div> </div>
<div id="outline-container-orgcc397ae" class="outline-4"> <div id="outline-container-orgc3f7b93" class="outline-4">
<h4 id="orgcc397ae"><span class="section-number-4">1.1.4</span> Read the number of molecular orbitals</h4> <h4 id="orgc3f7b93"><span class="section-number-4">1.1.4</span> Read the number of molecular orbitals</h4>
<div class="outline-text-4" id="text-1-1-4"> <div class="outline-text-4" id="text-1-1-4">
<div class="org-src-container"> <div class="org-src-container">
<pre class="src src-f90">rc = trexio_read_mo_num(f, n) <pre class="src src-f90">rc = trexio_read_mo_num(f, n)
@ -474,8 +474,8 @@ f = trexio_open (filename, <span style="color: #8b2252;">'r'</span>, TREXIO_HDF5
</div> </div>
</div> </div>
<div id="outline-container-orga37af36" class="outline-4"> <div id="outline-container-org2b36df3" class="outline-4">
<h4 id="orga37af36"><span class="section-number-4">1.1.5</span> Allocate memory</h4> <h4 id="org2b36df3"><span class="section-number-4">1.1.5</span> Allocate memory</h4>
<div class="outline-text-4" id="text-1-1-5"> <div class="outline-text-4" id="text-1-1-5">
<div class="org-src-container"> <div class="org-src-container">
<pre class="src src-f90"><span style="color: #a020f0;">allocate</span>( D(n,n), h0(n,n) ) <pre class="src src-f90"><span style="color: #a020f0;">allocate</span>( D(n,n), h0(n,n) )
@ -487,8 +487,8 @@ W(:,:,:,:) = 0.d0
</div> </div>
</div> </div>
<div id="outline-container-orgb20d6cb" class="outline-4"> <div id="outline-container-orgc85fe92" class="outline-4">
<h4 id="orgb20d6cb"><span class="section-number-4">1.1.6</span> Read one-electron quantities</h4> <h4 id="orgc85fe92"><span class="section-number-4">1.1.6</span> Read one-electron quantities</h4>
<div class="outline-text-4" id="text-1-1-6"> <div class="outline-text-4" id="text-1-1-6">
<div class="org-src-container"> <div class="org-src-container">
<pre class="src src-f90">rc = trexio_has_mo_1e_int_core_hamiltonian(f) <pre class="src src-f90">rc = trexio_has_mo_1e_int_core_hamiltonian(f)
@ -520,8 +520,8 @@ rc = trexio_read_rdm_1e(f, D)
</div> </div>
</div> </div>
<div id="outline-container-org2a736ad" class="outline-4"> <div id="outline-container-orgd8fead8" class="outline-4">
<h4 id="org2a736ad"><span class="section-number-4">1.1.7</span> Read two-electron quantities</h4> <h4 id="orgd8fead8"><span class="section-number-4">1.1.7</span> Read two-electron quantities</h4>
<div class="outline-text-4" id="text-1-1-7"> <div class="outline-text-4" id="text-1-1-7">
<p> <p>
Reading is done with OpenMP. Each thread reads its own buffer, and Reading is done with OpenMP. Each thread reads its own buffer, and
@ -537,8 +537,8 @@ to be protected in the critical section when modified.
</p> </p>
</div> </div>
<div id="outline-container-orgc2b43ec" class="outline-5"> <div id="outline-container-orgbe4da69" class="outline-5">
<h5 id="orgc2b43ec"><span class="section-number-5">1.1.7.1</span> Electron repulsion integrals</h5> <h5 id="orgbe4da69"><span class="section-number-5">1.1.7.1</span> Electron repulsion integrals</h5>
<div class="outline-text-5" id="text-1-1-7-1"> <div class="outline-text-5" id="text-1-1-7-1">
<div class="org-src-container"> <div class="org-src-container">
<pre class="src src-f90">rc = trexio_has_mo_2e_int_eri(f) <pre class="src src-f90">rc = trexio_has_mo_2e_int_eri(f)
@ -587,8 +587,8 @@ icount = BUFSIZE
</div> </div>
</div> </div>
<div id="outline-container-orgea7c720" class="outline-5"> <div id="outline-container-orgcac6ecf" class="outline-5">
<h5 id="orgea7c720"><span class="section-number-5">1.1.7.2</span> Reduced density matrix</h5> <h5 id="orgcac6ecf"><span class="section-number-5">1.1.7.2</span> Reduced density matrix</h5>
<div class="outline-text-5" id="text-1-1-7-2"> <div class="outline-text-5" id="text-1-1-7-2">
<div class="org-src-container"> <div class="org-src-container">
<pre class="src src-f90">rc = trexio_has_rdm_2e(f) <pre class="src src-f90">rc = trexio_has_rdm_2e(f)
@ -632,8 +632,8 @@ icount = bufsize
</div> </div>
</div> </div>
<div id="outline-container-org0499bf9" class="outline-4"> <div id="outline-container-org017d5b6" class="outline-4">
<h4 id="org0499bf9"><span class="section-number-4">1.1.8</span> Compute the energy</h4> <h4 id="org017d5b6"><span class="section-number-4">1.1.8</span> Compute the energy</h4>
<div class="outline-text-4" id="text-1-1-8"> <div class="outline-text-4" id="text-1-1-8">
<p> <p>
When the orbitals are real, we can use When the orbitals are real, we can use
@ -679,8 +679,8 @@ E = E + E_nn
</div> </div>
</div> </div>
<div id="outline-container-org92602b6" class="outline-4"> <div id="outline-container-orgd01af70" class="outline-4">
<h4 id="org92602b6"><span class="section-number-4">1.1.9</span> Terminate</h4> <h4 id="orgd01af70"><span class="section-number-4">1.1.9</span> Terminate</h4>
<div class="outline-text-4" id="text-1-1-9"> <div class="outline-text-4" id="text-1-1-9">
<div class="org-src-container"> <div class="org-src-container">
<pre class="src src-f90"> <span style="color: #a020f0;">deallocate</span>( D, h0, G, W ) <pre class="src src-f90"> <span style="color: #a020f0;">deallocate</span>( D, h0, G, W )
@ -695,7 +695,7 @@ E = E + E_nn
</div> </div>
<div id="postamble" class="status"> <div id="postamble" class="status">
<p class="author">Author: TREX-CoE</p> <p class="author">Author: TREX-CoE</p>
<p class="date">Created: 2022-06-03 Fri 07:50</p> <p class="date">Created: 2022-06-03 Fri 07:52</p>
<p class="validation"><a href="http://validator.w3.org/check?uri=referer">Validate</a></p> <p class="validation"><a href="http://validator.w3.org/check?uri=referer">Validate</a></p>
</div> </div>
</body> </body>

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"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en"> <html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en">
<head> <head>
<!-- 2022-06-03 Fri 07:50 --> <!-- 2022-06-03 Fri 07:52 -->
<meta http-equiv="Content-Type" content="text/html;charset=utf-8" /> <meta http-equiv="Content-Type" content="text/html;charset=utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1" /> <meta name="viewport" content="width=device-width, initial-scale=1" />
<title>TREXIO source code documentation</title> <title>TREXIO source code documentation</title>
@ -347,7 +347,7 @@ and bug reports should be submitted at
</div> </div>
<div id="postamble" class="status"> <div id="postamble" class="status">
<p class="author">Author: TREX-CoE</p> <p class="author">Author: TREX-CoE</p>
<p class="date">Created: 2022-06-03 Fri 07:50</p> <p class="date">Created: 2022-06-03 Fri 07:52</p>
<p class="validation"><a href="http://validator.w3.org/check?uri=referer">Validate</a></p> <p class="validation"><a href="http://validator.w3.org/check?uri=referer">Validate</a></p>
</div> </div>
</body> </body>

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"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en"> <html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en">
<head> <head>
<!-- 2022-06-03 Fri 07:50 --> <!-- 2022-06-03 Fri 07:52 -->
<meta http-equiv="Content-Type" content="text/html;charset=utf-8" /> <meta http-equiv="Content-Type" content="text/html;charset=utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1" /> <meta name="viewport" content="width=device-width, initial-scale=1" />
<title>HDF5 back end</title> <title>HDF5 back end</title>
@ -311,23 +311,23 @@ for the JavaScript code in this tag.
<h2>Table of Contents</h2> <h2>Table of Contents</h2>
<div id="text-table-of-contents"> <div id="text-table-of-contents">
<ul> <ul>
<li><a href="#orgd21c09d">1. Template for HDF5 definitions</a></li> <li><a href="#orgd715ed3">1. Template for HDF5 definitions</a></li>
<li><a href="#orgf154928">2. Template for HDF5 structures</a></li> <li><a href="#org4694773">2. Template for HDF5 structures</a></li>
<li><a href="#orgc205952">3. Template for HDF5 init/deinit</a></li> <li><a href="#orge8bb9c7">3. Template for HDF5 init/deinit</a></li>
<li><a href="#orgefc48cf">4. Template for HDF5 has/read/write a numerical attribute</a></li> <li><a href="#org6a9bd4b">4. Template for HDF5 has/read/write a numerical attribute</a></li>
<li><a href="#org1b3d255">5. Template for HDF5 has/read/write a dataset of numerical data</a></li> <li><a href="#org5dd5ef6">5. Template for HDF5 has/read/write a dataset of numerical data</a></li>
<li><a href="#org80a8fcd">6. Template for HDF5 has/read/write a dataset of sparse data</a></li> <li><a href="#org93df72b">6. Template for HDF5 has/read/write a dataset of sparse data</a></li>
<li><a href="#orgc86d817">7. Template for HDF5 has/read/write a dataset of strings</a></li> <li><a href="#orgcfa1482">7. Template for HDF5 has/read/write a dataset of strings</a></li>
<li><a href="#orga089ca2">8. Template for HDF5 has/read/write a string attribute</a></li> <li><a href="#orga462aab">8. Template for HDF5 has/read/write a string attribute</a></li>
<li><a href="#orgc2d9063">9. Template for HDF5 delete a group (UNSAFE mode)</a></li> <li><a href="#org75e2945">9. Template for HDF5 delete a group (UNSAFE mode)</a></li>
<li><a href="#org7e76698">10. Source code for the determinant part</a></li> <li><a href="#orga09edad">10. Source code for the determinant part</a></li>
<li><a href="#orgc64dbca">11. Helper functions</a></li> <li><a href="#org3f51525">11. Helper functions</a></li>
</ul> </ul>
</div> </div>
</div> </div>
<div id="outline-container-orgd21c09d" class="outline-2"> <div id="outline-container-orgd715ed3" class="outline-2">
<h2 id="orgd21c09d"><span class="section-number-2">1</span> Template for HDF5 definitions</h2> <h2 id="orgd715ed3"><span class="section-number-2">1</span> Template for HDF5 definitions</h2>
<div class="outline-text-2" id="text-1"> <div class="outline-text-2" id="text-1">
<div class="org-src-container"> <div class="org-src-container">
<pre class="src src-c"><span style="color: #483d8b;">#define</span> $GROUP$_GROUP_NAME <span style="color: #8b2252;">"$group$"</span> <pre class="src src-c"><span style="color: #483d8b;">#define</span> $GROUP$_GROUP_NAME <span style="color: #8b2252;">"$group$"</span>
@ -339,8 +339,8 @@ for the JavaScript code in this tag.
</div> </div>
</div> </div>
<div id="outline-container-orgf154928" class="outline-2"> <div id="outline-container-org4694773" class="outline-2">
<h2 id="orgf154928"><span class="section-number-2">2</span> Template for HDF5 structures</h2> <h2 id="org4694773"><span class="section-number-2">2</span> Template for HDF5 structures</h2>
<div class="outline-text-2" id="text-2"> <div class="outline-text-2" id="text-2">
<p> <p>
Polymorphism of the <code>trexio_t</code> type is handled by ensuring that the Polymorphism of the <code>trexio_t</code> type is handled by ensuring that the
@ -360,8 +360,8 @@ corresponding types for all back ends can be safely casted to
</div> </div>
</div> </div>
<div id="outline-container-orgc205952" class="outline-2"> <div id="outline-container-orge8bb9c7" class="outline-2">
<h2 id="orgc205952"><span class="section-number-2">3</span> Template for HDF5 init/deinit</h2> <h2 id="orge8bb9c7"><span class="section-number-2">3</span> Template for HDF5 init/deinit</h2>
<div class="outline-text-2" id="text-3"> <div class="outline-text-2" id="text-3">
<div class="org-src-container"> <div class="org-src-container">
<pre class="src src-c"><span style="color: #228b22;">trexio_exit_code</span> <pre class="src src-c"><span style="color: #228b22;">trexio_exit_code</span>
@ -466,8 +466,8 @@ corresponding types for all back ends can be safely casted to
</div> </div>
</div> </div>
<div id="outline-container-orgefc48cf" class="outline-2"> <div id="outline-container-org6a9bd4b" class="outline-2">
<h2 id="orgefc48cf"><span class="section-number-2">4</span> Template for HDF5 has/read/write a numerical attribute</h2> <h2 id="org6a9bd4b"><span class="section-number-2">4</span> Template for HDF5 has/read/write a numerical attribute</h2>
<div class="outline-text-2" id="text-4"> <div class="outline-text-2" id="text-4">
<div class="org-src-container"> <div class="org-src-container">
<pre class="src src-c"><span style="color: #228b22;">trexio_exit_code</span> <pre class="src src-c"><span style="color: #228b22;">trexio_exit_code</span>
@ -571,8 +571,8 @@ corresponding types for all back ends can be safely casted to
</div> </div>
</div> </div>
<div id="outline-container-org1b3d255" class="outline-2"> <div id="outline-container-org5dd5ef6" class="outline-2">
<h2 id="org1b3d255"><span class="section-number-2">5</span> Template for HDF5 has/read/write a dataset of numerical data</h2> <h2 id="org5dd5ef6"><span class="section-number-2">5</span> Template for HDF5 has/read/write a dataset of numerical data</h2>
<div class="outline-text-2" id="text-5"> <div class="outline-text-2" id="text-5">
<div class="org-src-container"> <div class="org-src-container">
<pre class="src src-c"><span style="color: #228b22;">trexio_exit_code</span> <pre class="src src-c"><span style="color: #228b22;">trexio_exit_code</span>
@ -706,8 +706,8 @@ corresponding types for all back ends can be safely casted to
</div> </div>
</div> </div>
<div id="outline-container-org80a8fcd" class="outline-2"> <div id="outline-container-org93df72b" class="outline-2">
<h2 id="org80a8fcd"><span class="section-number-2">6</span> Template for HDF5 has/read/write a dataset of sparse data</h2> <h2 id="org93df72b"><span class="section-number-2">6</span> Template for HDF5 has/read/write a dataset of sparse data</h2>
<div class="outline-text-2" id="text-6"> <div class="outline-text-2" id="text-6">
<p> <p>
Sparse data is stored using extensible datasets of HDF5. Extensibility is required Sparse data is stored using extensible datasets of HDF5. Extensibility is required
@ -910,8 +910,8 @@ due to the fact that the sparse data will be written in chunks of user-defined s
</div> </div>
</div> </div>
<div id="outline-container-orgc86d817" class="outline-2"> <div id="outline-container-orgcfa1482" class="outline-2">
<h2 id="orgc86d817"><span class="section-number-2">7</span> Template for HDF5 has/read/write a dataset of strings</h2> <h2 id="orgcfa1482"><span class="section-number-2">7</span> Template for HDF5 has/read/write a dataset of strings</h2>
<div class="outline-text-2" id="text-7"> <div class="outline-text-2" id="text-7">
<div class="org-src-container"> <div class="org-src-container">
<pre class="src src-c"><span style="color: #228b22;">trexio_exit_code</span> <pre class="src src-c"><span style="color: #228b22;">trexio_exit_code</span>
@ -1109,8 +1109,8 @@ due to the fact that the sparse data will be written in chunks of user-defined s
</div> </div>
</div> </div>
<div id="outline-container-orga089ca2" class="outline-2"> <div id="outline-container-orga462aab" class="outline-2">
<h2 id="orga089ca2"><span class="section-number-2">8</span> Template for HDF5 has/read/write a string attribute</h2> <h2 id="orga462aab"><span class="section-number-2">8</span> Template for HDF5 has/read/write a string attribute</h2>
<div class="outline-text-2" id="text-8"> <div class="outline-text-2" id="text-8">
<div class="org-src-container"> <div class="org-src-container">
<pre class="src src-c"><span style="color: #228b22;">trexio_exit_code</span> <pre class="src src-c"><span style="color: #228b22;">trexio_exit_code</span>
@ -1237,8 +1237,8 @@ due to the fact that the sparse data will be written in chunks of user-defined s
</div> </div>
</div> </div>
</div> </div>
<div id="outline-container-orgc2d9063" class="outline-2"> <div id="outline-container-org75e2945" class="outline-2">
<h2 id="orgc2d9063"><span class="section-number-2">9</span> Template for HDF5 delete a group (UNSAFE mode)</h2> <h2 id="org75e2945"><span class="section-number-2">9</span> Template for HDF5 delete a group (UNSAFE mode)</h2>
<div class="outline-text-2" id="text-9"> <div class="outline-text-2" id="text-9">
<p> <p>
<b><b>Note:</b></b> in early versions of the HDF5 library (v &lt; 1.10) unlinking an object was not working as expected <b><b>Note:</b></b> in early versions of the HDF5 library (v &lt; 1.10) unlinking an object was not working as expected
@ -1278,8 +1278,8 @@ Thus, any corrupted/lost file space will remain in the first file. The use of <c
</div> </div>
</div> </div>
<div id="outline-container-org7e76698" class="outline-2"> <div id="outline-container-orga09edad" class="outline-2">
<h2 id="org7e76698"><span class="section-number-2">10</span> Source code for the determinant part</h2> <h2 id="orga09edad"><span class="section-number-2">10</span> Source code for the determinant part</h2>
<div class="outline-text-2" id="text-10"> <div class="outline-text-2" id="text-10">
<p> <p>
Each array is stored in a separate HDF5 dataset due to the fact that determinant I/O has to be decoupled. Each array is stored in a separate HDF5 dataset due to the fact that determinant I/O has to be decoupled.
@ -1532,8 +1532,8 @@ Size specifies the number of data items (e.g. determinants) to process.
</div> </div>
</div> </div>
<div id="outline-container-orgc64dbca" class="outline-2"> <div id="outline-container-org3f51525" class="outline-2">
<h2 id="orgc64dbca"><span class="section-number-2">11</span> Helper functions</h2> <h2 id="org3f51525"><span class="section-number-2">11</span> Helper functions</h2>
<div class="outline-text-2" id="text-11"> <div class="outline-text-2" id="text-11">
<div class="org-src-container"> <div class="org-src-container">
<pre class="src src-c"><span style="color: #228b22;">trexio_exit_code</span> <pre class="src src-c"><span style="color: #228b22;">trexio_exit_code</span>
@ -1796,7 +1796,7 @@ Size specifies the number of data items (e.g. determinants) to process.
</div> </div>
<div id="postamble" class="status"> <div id="postamble" class="status">
<p class="author">Author: TREX-CoE</p> <p class="author">Author: TREX-CoE</p>
<p class="date">Created: 2022-06-03 Fri 07:50</p> <p class="date">Created: 2022-06-03 Fri 07:52</p>
<p class="validation"><a href="http://validator.w3.org/check?uri=referer">Validate</a></p> <p class="validation"><a href="http://validator.w3.org/check?uri=referer">Validate</a></p>
</div> </div>
</body> </body>

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@ -3,7 +3,7 @@
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en"> <html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en">
<head> <head>
<!-- 2022-06-03 Fri 07:50 --> <!-- 2022-06-03 Fri 07:52 -->
<meta http-equiv="Content-Type" content="text/html;charset=utf-8" /> <meta http-equiv="Content-Type" content="text/html;charset=utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1" /> <meta name="viewport" content="width=device-width, initial-scale=1" />
<title>TEXT back end</title> <title>TEXT back end</title>
@ -311,20 +311,20 @@ for the JavaScript code in this tag.
<h2>Table of Contents</h2> <h2>Table of Contents</h2>
<div id="text-table-of-contents"> <div id="text-table-of-contents">
<ul> <ul>
<li><a href="#org03edc32">1. Template for group-related structures in text back end</a></li> <li><a href="#org4ffb75f">1. Template for group-related structures in text back end</a></li>
<li><a href="#orgeafc0b7">2. Template for general structure in text back end</a></li> <li><a href="#org6dea98c">2. Template for general structure in text back end</a></li>
<li><a href="#org52a864c">3. Initialize function (constant part)</a></li> <li><a href="#orgc295d93">3. Initialize function (constant part)</a></li>
<li><a href="#org4588e43">4. Deinitialize function (templated part)</a></li> <li><a href="#org41970db">4. Deinitialize function (templated part)</a></li>
<li><a href="#org87c6ab0">5. Template for text read a group</a></li> <li><a href="#org7c5b555">5. Template for text read a group</a></li>
<li><a href="#org374a8f3">6. Template for text flush a group</a></li> <li><a href="#org8b3fa0c">6. Template for text flush a group</a></li>
<li><a href="#org88451c8">7. Template for text free memory</a></li> <li><a href="#org43a4f82">7. Template for text free memory</a></li>
<li><a href="#orga4d96d5">8. Template for has/read/write a numerical attribute</a></li> <li><a href="#org9a04a88">8. Template for has/read/write a numerical attribute</a></li>
<li><a href="#org28a8d19">9. Template for has/read/write a dataset of numerical data</a></li> <li><a href="#org6cc11e0">9. Template for has/read/write a dataset of numerical data</a></li>
<li><a href="#orgfe6fc47">10. Template for has/read/write a dataset of strings</a></li> <li><a href="#org5eda6db">10. Template for has/read/write a dataset of strings</a></li>
<li><a href="#org41112b3">11. Template for has/read/write a string attribute</a></li> <li><a href="#orgb7ec02c">11. Template for has/read/write a string attribute</a></li>
<li><a href="#orgf06f64f">12. Template for has/read/write the dataset of sparse data</a></li> <li><a href="#org1a92014">12. Template for has/read/write the dataset of sparse data</a></li>
<li><a href="#org9728148">13. Template for text delete a group (UNSAFE mode)</a></li> <li><a href="#org946767c">13. Template for text delete a group (UNSAFE mode)</a></li>
<li><a href="#org5942ccc">14. Source code for the determinant part</a></li> <li><a href="#orgd9a35b5">14. Source code for the determinant part</a></li>
</ul> </ul>
</div> </div>
</div> </div>
@ -346,8 +346,8 @@ directory.
The file is written when closed, or when the flush function is called. The file is written when closed, or when the flush function is called.
</p> </p>
<div id="outline-container-org03edc32" class="outline-2"> <div id="outline-container-org4ffb75f" class="outline-2">
<h2 id="org03edc32"><span class="section-number-2">1</span> Template for group-related structures in text back end</h2> <h2 id="org4ffb75f"><span class="section-number-2">1</span> Template for group-related structures in text back end</h2>
<div class="outline-text-2" id="text-1"> <div class="outline-text-2" id="text-1">
<div class="org-src-container"> <div class="org-src-container">
<pre class="src src-c"><span style="color: #a020f0;">typedef</span> <span style="color: #a020f0;">struct</span> $group$_s { <pre class="src src-c"><span style="color: #a020f0;">typedef</span> <span style="color: #a020f0;">struct</span> $group$_s {
@ -366,8 +366,8 @@ The file is written when closed, or when the flush function is called.
</div> </div>
</div> </div>
<div id="outline-container-orgeafc0b7" class="outline-2"> <div id="outline-container-org6dea98c" class="outline-2">
<h2 id="orgeafc0b7"><span class="section-number-2">2</span> Template for general structure in text back end</h2> <h2 id="org6dea98c"><span class="section-number-2">2</span> Template for general structure in text back end</h2>
<div class="outline-text-2" id="text-2"> <div class="outline-text-2" id="text-2">
<p> <p>
Polymorphism of the <code>trexio_t</code> type is handled by ensuring that the Polymorphism of the <code>trexio_t</code> type is handled by ensuring that the
@ -387,8 +387,8 @@ corresponding types for all back ends can be safely casted to
</div> </div>
</div> </div>
<div id="outline-container-org52a864c" class="outline-2"> <div id="outline-container-orgc295d93" class="outline-2">
<h2 id="org52a864c"><span class="section-number-2">3</span> Initialize function (constant part)</h2> <h2 id="orgc295d93"><span class="section-number-2">3</span> Initialize function (constant part)</h2>
<div class="outline-text-2" id="text-3"> <div class="outline-text-2" id="text-3">
<div class="org-src-container"> <div class="org-src-container">
<pre class="src src-c"><span style="color: #228b22;">trexio_exit_code</span> <pre class="src src-c"><span style="color: #228b22;">trexio_exit_code</span>
@ -531,8 +531,8 @@ corresponding types for all back ends can be safely casted to
</div> </div>
</div> </div>
<div id="outline-container-org4588e43" class="outline-2"> <div id="outline-container-org41970db" class="outline-2">
<h2 id="org4588e43"><span class="section-number-2">4</span> Deinitialize function (templated part)</h2> <h2 id="org41970db"><span class="section-number-2">4</span> Deinitialize function (templated part)</h2>
<div class="outline-text-2" id="text-4"> <div class="outline-text-2" id="text-4">
<div class="org-src-container"> <div class="org-src-container">
<pre class="src src-c"><span style="color: #228b22;">trexio_exit_code</span> <pre class="src src-c"><span style="color: #228b22;">trexio_exit_code</span>
@ -554,8 +554,8 @@ corresponding types for all back ends can be safely casted to
</div> </div>
</div> </div>
<div id="outline-container-org87c6ab0" class="outline-2"> <div id="outline-container-org7c5b555" class="outline-2">
<h2 id="org87c6ab0"><span class="section-number-2">5</span> Template for text read a group</h2> <h2 id="org7c5b555"><span class="section-number-2">5</span> Template for text read a group</h2>
<div class="outline-text-2" id="text-5"> <div class="outline-text-2" id="text-5">
<div class="org-src-container"> <div class="org-src-container">
<pre class="src src-c">$group$_t* <pre class="src src-c">$group$_t*
@ -779,8 +779,8 @@ trexio_text_read_$group$ (<span style="color: #228b22;">trexio_text_t</span>* <s
</div> </div>
</div> </div>
<div id="outline-container-org374a8f3" class="outline-2"> <div id="outline-container-org8b3fa0c" class="outline-2">
<h2 id="org374a8f3"><span class="section-number-2">6</span> Template for text flush a group</h2> <h2 id="org8b3fa0c"><span class="section-number-2">6</span> Template for text flush a group</h2>
<div class="outline-text-2" id="text-6"> <div class="outline-text-2" id="text-6">
<div class="org-src-container"> <div class="org-src-container">
<pre class="src src-c"><span style="color: #228b22;">trexio_exit_code</span> <pre class="src src-c"><span style="color: #228b22;">trexio_exit_code</span>
@ -844,8 +844,8 @@ trexio_text_read_$group$ (<span style="color: #228b22;">trexio_text_t</span>* <s
</div> </div>
</div> </div>
<div id="outline-container-org88451c8" class="outline-2"> <div id="outline-container-org43a4f82" class="outline-2">
<h2 id="org88451c8"><span class="section-number-2">7</span> Template for text free memory</h2> <h2 id="org43a4f82"><span class="section-number-2">7</span> Template for text free memory</h2>
<div class="outline-text-2" id="text-7"> <div class="outline-text-2" id="text-7">
<p> <p>
Memory is allocated when reading. The following function frees memory. Memory is allocated when reading. The following function frees memory.
@ -914,8 +914,8 @@ This function is called upon the non-successful exit from the <code>trexio_text_
</div> </div>
</div> </div>
<div id="outline-container-orga4d96d5" class="outline-2"> <div id="outline-container-org9a04a88" class="outline-2">
<h2 id="orga4d96d5"><span class="section-number-2">8</span> Template for has/read/write a numerical attribute</h2> <h2 id="org9a04a88"><span class="section-number-2">8</span> Template for has/read/write a numerical attribute</h2>
<div class="outline-text-2" id="text-8"> <div class="outline-text-2" id="text-8">
<div class="org-src-container"> <div class="org-src-container">
<pre class="src src-c"><span style="color: #228b22;">trexio_exit_code</span> <pre class="src src-c"><span style="color: #228b22;">trexio_exit_code</span>
@ -978,8 +978,8 @@ This function is called upon the non-successful exit from the <code>trexio_text_
</div> </div>
</div> </div>
<div id="outline-container-org28a8d19" class="outline-2"> <div id="outline-container-org6cc11e0" class="outline-2">
<h2 id="org28a8d19"><span class="section-number-2">9</span> Template for has/read/write a dataset of numerical data</h2> <h2 id="org6cc11e0"><span class="section-number-2">9</span> Template for has/read/write a dataset of numerical data</h2>
<div class="outline-text-2" id="text-9"> <div class="outline-text-2" id="text-9">
<p> <p>
The <code>group_dset</code> array is assumed allocated with the appropriate size. The <code>group_dset</code> array is assumed allocated with the appropriate size.
@ -1075,8 +1075,8 @@ The <code>group_dset</code> array is assumed allocated with the appropriate size
</div> </div>
</div> </div>
</div> </div>
<div id="outline-container-orgfe6fc47" class="outline-2"> <div id="outline-container-org5eda6db" class="outline-2">
<h2 id="orgfe6fc47"><span class="section-number-2">10</span> Template for has/read/write a dataset of strings</h2> <h2 id="org5eda6db"><span class="section-number-2">10</span> Template for has/read/write a dataset of strings</h2>
<div class="outline-text-2" id="text-10"> <div class="outline-text-2" id="text-10">
<p> <p>
The <code>group_dset</code> array is assumed allocated with the appropriate size. The <code>group_dset</code> array is assumed allocated with the appropriate size.
@ -1177,8 +1177,8 @@ The <code>group_dset</code> array is assumed allocated with the appropriate size
</div> </div>
</div> </div>
</div> </div>
<div id="outline-container-org41112b3" class="outline-2"> <div id="outline-container-orgb7ec02c" class="outline-2">
<h2 id="org41112b3"><span class="section-number-2">11</span> Template for has/read/write a string attribute</h2> <h2 id="orgb7ec02c"><span class="section-number-2">11</span> Template for has/read/write a string attribute</h2>
<div class="outline-text-2" id="text-11"> <div class="outline-text-2" id="text-11">
<div class="org-src-container"> <div class="org-src-container">
<pre class="src src-c"><span style="color: #228b22;">trexio_exit_code</span> <pre class="src src-c"><span style="color: #228b22;">trexio_exit_code</span>
@ -1252,8 +1252,8 @@ The <code>group_dset</code> array is assumed allocated with the appropriate size
</div> </div>
</div> </div>
</div> </div>
<div id="outline-container-orgf06f64f" class="outline-2"> <div id="outline-container-org1a92014" class="outline-2">
<h2 id="orgf06f64f"><span class="section-number-2">12</span> Template for has/read/write the dataset of sparse data</h2> <h2 id="org1a92014"><span class="section-number-2">12</span> Template for has/read/write the dataset of sparse data</h2>
<div class="outline-text-2" id="text-12"> <div class="outline-text-2" id="text-12">
<p> <p>
Each sparse array is stored in a separate <code>.txt</code> file due to the fact that sparse I/O has to be decoupled Each sparse array is stored in a separate <code>.txt</code> file due to the fact that sparse I/O has to be decoupled
@ -1526,8 +1526,8 @@ User provides indices and values of the sparse array as two separate variables.
</div> </div>
</div> </div>
<div id="outline-container-org9728148" class="outline-2"> <div id="outline-container-org946767c" class="outline-2">
<h2 id="org9728148"><span class="section-number-2">13</span> Template for text delete a group (UNSAFE mode)</h2> <h2 id="org946767c"><span class="section-number-2">13</span> Template for text delete a group (UNSAFE mode)</h2>
<div class="outline-text-2" id="text-13"> <div class="outline-text-2" id="text-13">
<div class="org-src-container"> <div class="org-src-container">
<pre class="src src-c"><span style="color: #228b22;">trexio_exit_code</span> <pre class="src src-c"><span style="color: #228b22;">trexio_exit_code</span>
@ -1555,8 +1555,8 @@ User provides indices and values of the sparse array as two separate variables.
</div> </div>
</div> </div>
<div id="outline-container-org5942ccc" class="outline-2"> <div id="outline-container-orgd9a35b5" class="outline-2">
<h2 id="org5942ccc"><span class="section-number-2">14</span> Source code for the determinant part</h2> <h2 id="orgd9a35b5"><span class="section-number-2">14</span> Source code for the determinant part</h2>
<div class="outline-text-2" id="text-14"> <div class="outline-text-2" id="text-14">
<p> <p>
Each array is stored in a separate <code>.txt</code> file due to the fact that determinant I/O has to be decoupled Each array is stored in a separate <code>.txt</code> file due to the fact that determinant I/O has to be decoupled
@ -1960,7 +1960,7 @@ Size specifies the number of data items, e.g. determinants.
</div> </div>
<div id="postamble" class="status"> <div id="postamble" class="status">
<p class="author">Author: TREX-CoE</p> <p class="author">Author: TREX-CoE</p>
<p class="date">Created: 2022-06-03 Fri 07:50</p> <p class="date">Created: 2022-06-03 Fri 07:52</p>
<p class="validation"><a href="http://validator.w3.org/check?uri=referer">Validate</a></p> <p class="validation"><a href="http://validator.w3.org/check?uri=referer">Validate</a></p>
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<head> <head>
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<title>TREX Configuration file</title> <title>TREX Configuration file</title>
@ -333,37 +333,37 @@ for the JavaScript code in this tag.
<h2>Table of Contents</h2> <h2>Table of Contents</h2>
<div id="text-table-of-contents"> <div id="text-table-of-contents">
<ul> <ul>
<li><a href="#org3252880">1. Metadata (metadata group)</a></li> <li><a href="#org6300f73">1. Metadata (metadata group)</a></li>
<li><a href="#org4b52101">2. Electron (electron group)</a></li> <li><a href="#orge914361">2. Electron (electron group)</a></li>
<li><a href="#org14cc67b">3. Nucleus (nucleus group)</a></li> <li><a href="#org8d192de">3. Nucleus (nucleus group)</a></li>
<li><a href="#orga30d309">4. Effective core potentials (ecp group)</a> <li><a href="#orgae8c47e">4. Effective core potentials (ecp group)</a>
<ul> <ul>
<li><a href="#org9788d03">4.1. Example</a></li> <li><a href="#orge079e3d">4.1. Example</a></li>
</ul> </ul>
</li> </li>
<li><a href="#orgf710972">5. Basis set (basis group)</a> <li><a href="#orge1b8f06">5. Basis set (basis group)</a>
<ul> <ul>
<li><a href="#org874395b">5.1. Example</a></li> <li><a href="#orgc195865">5.1. Example</a></li>
</ul> </ul>
</li> </li>
<li><a href="#org86a8a0f">6. Atomic orbitals (ao group)</a> <li><a href="#orgd49676c">6. Atomic orbitals (ao group)</a>
<ul> <ul>
<li><a href="#ao_one_e">6.1. One-electron integrals (<code>ao_1e_int</code> group)</a></li> <li><a href="#ao_one_e">6.1. One-electron integrals (<code>ao_1e_int</code> group)</a></li>
<li><a href="#ao_two_e">6.2. Two-electron integrals (<code>ao_2e_int</code> group)</a></li> <li><a href="#ao_two_e">6.2. Two-electron integrals (<code>ao_2e_int</code> group)</a></li>
</ul> </ul>
</li> </li>
<li><a href="#org3ac2528">7. Molecular orbitals (mo group)</a> <li><a href="#org8275048">7. Molecular orbitals (mo group)</a>
<ul> <ul>
<li><a href="#orgb05a088">7.1. One-electron integrals (<code>mo_1e_int</code> group)</a></li> <li><a href="#org0a71e05">7.1. One-electron integrals (<code>mo_1e_int</code> group)</a></li>
<li><a href="#orga3d72a3">7.2. Two-electron integrals (<code>mo_2e_int</code> group)</a></li> <li><a href="#org3893c95">7.2. Two-electron integrals (<code>mo_2e_int</code> group)</a></li>
</ul> </ul>
</li> </li>
<li><a href="#org0f20932">8. Slater determinants (determinant group)</a></li> <li><a href="#org3c92e88">8. Slater determinants (determinant group)</a></li>
<li><a href="#org96965b3">9. Excited states (state group)</a></li> <li><a href="#org0889db2">9. Excited states (state group)</a></li>
<li><a href="#orged44ed8">10. Reduced density matrices (rdm group)</a></li> <li><a href="#orgbc74f20">10. Reduced density matrices (rdm group)</a></li>
<li><a href="#orgc07dae2">11. Cell (cell group)</a></li> <li><a href="#org585adb5">11. Cell (cell group)</a></li>
<li><a href="#orgf0e2c1d">12. Periodic boundary calculations (pbc group)</a></li> <li><a href="#org53f1718">12. Periodic boundary calculations (pbc group)</a></li>
<li><a href="#org1140887">13. Quantum Monte Carlo data (qmc group)</a></li> <li><a href="#org4265157">13. Quantum Monte Carlo data (qmc group)</a></li>
</ul> </ul>
</div> </div>
</div> </div>
@ -413,8 +413,8 @@ the <a href="./examples.html">examples</a>.
</p> </p>
<div id="outline-container-org3252880" class="outline-2"> <div id="outline-container-org6300f73" class="outline-2">
<h2 id="org3252880"><span class="section-number-2">1</span> Metadata (metadata group)</h2> <h2 id="org6300f73"><span class="section-number-2">1</span> Metadata (metadata group)</h2>
<div class="outline-text-2" id="text-1"> <div class="outline-text-2" id="text-1">
<p> <p>
As we expect our files to be archived in open-data repositories, we As we expect our files to be archived in open-data repositories, we
@ -424,7 +424,7 @@ which have participated to the creation of the file, a list of
authors of the file, and a textual description. authors of the file, and a textual description.
</p> </p>
<table id="org7bb12ba" border="2" cellspacing="0" cellpadding="6" rules="groups" frame="hsides"> <table id="orgac1e090" border="2" cellspacing="0" cellpadding="6" rules="groups" frame="hsides">
<colgroup> <colgroup>
@ -505,15 +505,15 @@ then the <code>unsafe</code> attribute value can be manually overwritten (in uns
</div> </div>
</div> </div>
<div id="outline-container-org4b52101" class="outline-2"> <div id="outline-container-orge914361" class="outline-2">
<h2 id="org4b52101"><span class="section-number-2">2</span> Electron (electron group)</h2> <h2 id="orge914361"><span class="section-number-2">2</span> Electron (electron group)</h2>
<div class="outline-text-2" id="text-2"> <div class="outline-text-2" id="text-2">
<p> <p>
We consider wave functions expressed in the spin-free formalism, where We consider wave functions expressed in the spin-free formalism, where
the number of &uarr; and &darr; electrons is fixed. the number of &uarr; and &darr; electrons is fixed.
</p> </p>
<table id="org69dea59" border="2" cellspacing="0" cellpadding="6" rules="groups" frame="hsides"> <table id="orga7f0051" border="2" cellspacing="0" cellpadding="6" rules="groups" frame="hsides">
<colgroup> <colgroup>
@ -559,15 +559,15 @@ the number of &uarr; and &darr; electrons is fixed.
</div> </div>
</div> </div>
<div id="outline-container-org14cc67b" class="outline-2"> <div id="outline-container-org8d192de" class="outline-2">
<h2 id="org14cc67b"><span class="section-number-2">3</span> Nucleus (nucleus group)</h2> <h2 id="org8d192de"><span class="section-number-2">3</span> Nucleus (nucleus group)</h2>
<div class="outline-text-2" id="text-3"> <div class="outline-text-2" id="text-3">
<p> <p>
The nuclei are considered as fixed point charges. Coordinates are The nuclei are considered as fixed point charges. Coordinates are
given in Cartesian \((x,y,z)\) format. given in Cartesian \((x,y,z)\) format.
</p> </p>
<table id="orgf6fd47a" border="2" cellspacing="0" cellpadding="6" rules="groups" frame="hsides"> <table id="org2d7abfe" border="2" cellspacing="0" cellpadding="6" rules="groups" frame="hsides">
<colgroup> <colgroup>
@ -634,8 +634,8 @@ given in Cartesian \((x,y,z)\) format.
</div> </div>
</div> </div>
<div id="outline-container-orga30d309" class="outline-2"> <div id="outline-container-orgae8c47e" class="outline-2">
<h2 id="orga30d309"><span class="section-number-2">4</span> Effective core potentials (ecp group)</h2> <h2 id="orgae8c47e"><span class="section-number-2">4</span> Effective core potentials (ecp group)</h2>
<div class="outline-text-2" id="text-4"> <div class="outline-text-2" id="text-4">
<p> <p>
An effective core potential (ECP) \(V_A^{\text{ECP}}\) replacing the An effective core potential (ECP) \(V_A^{\text{ECP}}\) replacing the
@ -668,7 +668,7 @@ The functions \(V_{A\ell}\) are parameterized as:
See <a href="http://dx.doi.org/10.1063/1.4984046">http://dx.doi.org/10.1063/1.4984046</a> or <a href="https://doi.org/10.1063/1.5121006">https://doi.org/10.1063/1.5121006</a> for more info. See <a href="http://dx.doi.org/10.1063/1.4984046">http://dx.doi.org/10.1063/1.4984046</a> or <a href="https://doi.org/10.1063/1.5121006">https://doi.org/10.1063/1.5121006</a> for more info.
</p> </p>
<table id="org9b377bf" border="2" cellspacing="0" cellpadding="6" rules="groups" frame="hsides"> <table id="org712148a" border="2" cellspacing="0" cellpadding="6" rules="groups" frame="hsides">
<colgroup> <colgroup>
@ -770,8 +770,8 @@ If you encounter the aforementioned issue, please report it to our <a href="http
</p> </p>
</div> </div>
<div id="outline-container-org9788d03" class="outline-3"> <div id="outline-container-orge079e3d" class="outline-3">
<h3 id="org9788d03"><span class="section-number-3">4.1</span> Example</h3> <h3 id="orge079e3d"><span class="section-number-3">4.1</span> Example</h3>
<div class="outline-text-3" id="text-4-1"> <div class="outline-text-3" id="text-4-1">
<p> <p>
For example, consider H<sub>2</sub> molecule with the following For example, consider H<sub>2</sub> molecule with the following
@ -834,8 +834,8 @@ power = [
</div> </div>
</div> </div>
<div id="outline-container-orgf710972" class="outline-2"> <div id="outline-container-orge1b8f06" class="outline-2">
<h2 id="orgf710972"><span class="section-number-2">5</span> Basis set (basis group)</h2> <h2 id="orge1b8f06"><span class="section-number-2">5</span> Basis set (basis group)</h2>
<div class="outline-text-2" id="text-5"> <div class="outline-text-2" id="text-5">
<p> <p>
We consider here basis functions centered on nuclei. Hence, we enable We consider here basis functions centered on nuclei. Hence, we enable
@ -888,7 +888,7 @@ If the the basis function is not considered normalized, \(\mathcal{N}_s=1\).
All the basis set parameters are stored in one-dimensional arrays: All the basis set parameters are stored in one-dimensional arrays:
</p> </p>
<table id="orgc26f475" border="2" cellspacing="0" cellpadding="6" rules="groups" frame="hsides"> <table id="org8022526" border="2" cellspacing="0" cellpadding="6" rules="groups" frame="hsides">
<colgroup> <colgroup>
@ -982,8 +982,8 @@ All the basis set parameters are stored in one-dimensional arrays:
</table> </table>
</div> </div>
<div id="outline-container-org874395b" class="outline-3"> <div id="outline-container-orgc195865" class="outline-3">
<h3 id="org874395b"><span class="section-number-3">5.1</span> Example</h3> <h3 id="orgc195865"><span class="section-number-3">5.1</span> Example</h3>
<div class="outline-text-3" id="text-5-1"> <div class="outline-text-3" id="text-5-1">
<p> <p>
For example, consider H<sub>2</sub> with the following basis set (in GAMESS For example, consider H<sub>2</sub> with the following basis set (in GAMESS
@ -1061,8 +1061,8 @@ prim_factor =
</div> </div>
</div> </div>
<div id="outline-container-org86a8a0f" class="outline-2"> <div id="outline-container-orgd49676c" class="outline-2">
<h2 id="org86a8a0f"><span class="section-number-2">6</span> Atomic orbitals (ao group)</h2> <h2 id="orgd49676c"><span class="section-number-2">6</span> Atomic orbitals (ao group)</h2>
<div class="outline-text-2" id="text-6"> <div class="outline-text-2" id="text-6">
<p> <p>
Going from the atomic basis set to AOs implies a systematic Going from the atomic basis set to AOs implies a systematic
@ -1115,13 +1115,13 @@ shell, as in the GAMESS convention where
<p> <p>
In such a case, one should set the normalization of the shell (in In such a case, one should set the normalization of the shell (in
the <a href="#orgf710972">Basis set</a> section) to \(\mathcal{N}_{z^2}\), which is the the <a href="#orge1b8f06">Basis set</a> section) to \(\mathcal{N}_{z^2}\), which is the
normalization factor of the atomic orbitals in spherical coordinates. normalization factor of the atomic orbitals in spherical coordinates.
The normalization factor of the \(xy\) function which should be The normalization factor of the \(xy\) function which should be
introduced here should be \(\frac{\mathcal{N}_{xy}}{\mathcal{N}_{z^2}}\). introduced here should be \(\frac{\mathcal{N}_{xy}}{\mathcal{N}_{z^2}}\).
</p> </p>
<table id="org1b4c26e" border="2" cellspacing="0" cellpadding="6" rules="groups" frame="hsides"> <table id="org3db2cb9" border="2" cellspacing="0" cellpadding="6" rules="groups" frame="hsides">
<colgroup> <colgroup>
@ -1173,8 +1173,8 @@ introduced here should be \(\frac{\mathcal{N}_{xy}}{\mathcal{N}_{z^2}}\).
</table> </table>
</div> </div>
<div id="outline-container-orgc9dde95" class="outline-3"> <div id="outline-container-org4a77a0e" class="outline-3">
<h3 id="ao_one_e"><a id="orgc9dde95"></a><span class="section-number-3">6.1</span> One-electron integrals (<code>ao_1e_int</code> group)</h3> <h3 id="ao_one_e"><a id="org4a77a0e"></a><span class="section-number-3">6.1</span> One-electron integrals (<code>ao_1e_int</code> group)</h3>
<div class="outline-text-3" id="text-ao_one_e"> <div class="outline-text-3" id="text-ao_one_e">
<ul class="org-ul"> <ul class="org-ul">
<li>\[ \hat{V}_{\text{ne}} = \sum_{A=1}^{N_\text{nucl}} <li>\[ \hat{V}_{\text{ne}} = \sum_{A=1}^{N_\text{nucl}}
@ -1191,7 +1191,7 @@ The one-electron integrals for a one-electron operator \(\hat{O}\) are
over atomic orbitals. over atomic orbitals.
</p> </p>
<table id="org4ebfef0" border="2" cellspacing="0" cellpadding="6" rules="groups" frame="hsides"> <table id="org63357eb" border="2" cellspacing="0" cellpadding="6" rules="groups" frame="hsides">
<colgroup> <colgroup>
@ -1286,8 +1286,8 @@ over atomic orbitals.
</div> </div>
</div> </div>
<div id="outline-container-orgb5d2f72" class="outline-3"> <div id="outline-container-org6109ddb" class="outline-3">
<h3 id="ao_two_e"><a id="orgb5d2f72"></a><span class="section-number-3">6.2</span> Two-electron integrals (<code>ao_2e_int</code> group)</h3> <h3 id="ao_two_e"><a id="org6109ddb"></a><span class="section-number-3">6.2</span> Two-electron integrals (<code>ao_2e_int</code> group)</h3>
<div class="outline-text-3" id="text-ao_two_e"> <div class="outline-text-3" id="text-ao_two_e">
<p> <p>
The two-electron integrals for a two-electron operator \(\hat{O}\) are The two-electron integrals for a two-electron operator \(\hat{O}\) are
@ -1308,7 +1308,7 @@ notation.
\mathbf{r}_j \vert)}{\vert \mathbf{r}_i - \mathbf{r}_j \vert} \] : electron-electron long range potential</li> \mathbf{r}_j \vert)}{\vert \mathbf{r}_i - \mathbf{r}_j \vert} \] : electron-electron long range potential</li>
</ul> </ul>
<table id="org72427b9" border="2" cellspacing="0" cellpadding="6" rules="groups" frame="hsides"> <table id="org0df1438" border="2" cellspacing="0" cellpadding="6" rules="groups" frame="hsides">
<colgroup> <colgroup>
@ -1348,10 +1348,10 @@ notation.
</div> </div>
</div> </div>
<div id="outline-container-org3ac2528" class="outline-2"> <div id="outline-container-org8275048" class="outline-2">
<h2 id="org3ac2528"><span class="section-number-2">7</span> Molecular orbitals (mo group)</h2> <h2 id="org8275048"><span class="section-number-2">7</span> Molecular orbitals (mo group)</h2>
<div class="outline-text-2" id="text-7"> <div class="outline-text-2" id="text-7">
<table id="orgb1fb83d" border="2" cellspacing="0" cellpadding="6" rules="groups" frame="hsides"> <table id="orgfb80842" border="2" cellspacing="0" cellpadding="6" rules="groups" frame="hsides">
<colgroup> <colgroup>
@ -1424,8 +1424,8 @@ notation.
</table> </table>
</div> </div>
<div id="outline-container-orgb05a088" class="outline-3"> <div id="outline-container-org0a71e05" class="outline-3">
<h3 id="orgb05a088"><span class="section-number-3">7.1</span> One-electron integrals (<code>mo_1e_int</code> group)</h3> <h3 id="org0a71e05"><span class="section-number-3">7.1</span> One-electron integrals (<code>mo_1e_int</code> group)</h3>
<div class="outline-text-3" id="text-7-1"> <div class="outline-text-3" id="text-7-1">
<p> <p>
The operators as the same as those defined in the The operators as the same as those defined in the
@ -1433,7 +1433,7 @@ The operators as the same as those defined in the
the basis of molecular orbitals. the basis of molecular orbitals.
</p> </p>
<table id="orge043ebb" border="2" cellspacing="0" cellpadding="6" rules="groups" frame="hsides"> <table id="org57528eb" border="2" cellspacing="0" cellpadding="6" rules="groups" frame="hsides">
<colgroup> <colgroup>
@ -1528,8 +1528,8 @@ the basis of molecular orbitals.
</div> </div>
</div> </div>
<div id="outline-container-orga3d72a3" class="outline-3"> <div id="outline-container-org3893c95" class="outline-3">
<h3 id="orga3d72a3"><span class="section-number-3">7.2</span> Two-electron integrals (<code>mo_2e_int</code> group)</h3> <h3 id="org3893c95"><span class="section-number-3">7.2</span> Two-electron integrals (<code>mo_2e_int</code> group)</h3>
<div class="outline-text-3" id="text-7-2"> <div class="outline-text-3" id="text-7-2">
<p> <p>
The operators as the same as those defined in the The operators as the same as those defined in the
@ -1537,7 +1537,7 @@ The operators as the same as those defined in the
the basis of molecular orbitals. the basis of molecular orbitals.
</p> </p>
<table id="org93f9cc9" border="2" cellspacing="0" cellpadding="6" rules="groups" frame="hsides"> <table id="org64112e0" border="2" cellspacing="0" cellpadding="6" rules="groups" frame="hsides">
<colgroup> <colgroup>
@ -1577,8 +1577,8 @@ the basis of molecular orbitals.
</div> </div>
</div> </div>
<div id="outline-container-org0f20932" class="outline-2"> <div id="outline-container-org3c92e88" class="outline-2">
<h2 id="org0f20932"><span class="section-number-2">8</span> Slater determinants (determinant group)</h2> <h2 id="org3c92e88"><span class="section-number-2">8</span> Slater determinants (determinant group)</h2>
<div class="outline-text-2" id="text-8"> <div class="outline-text-2" id="text-8">
<p> <p>
The configuration interaction (CI) wave function \(\Psi\) The configuration interaction (CI) wave function \(\Psi\)
@ -1611,7 +1611,7 @@ where \(\alpha\) and \(\beta\) denote $&uarr;$-spin and $&darr;$-spin electrons,
\(n\uparrow\) and \(n\downarrow\) correspond to <code>electron.up_num</code> and <code>electron.dn_num</code>, respectively. \(n\uparrow\) and \(n\downarrow\) correspond to <code>electron.up_num</code> and <code>electron.dn_num</code>, respectively.
</p> </p>
<table id="org736e622" border="2" cellspacing="0" cellpadding="6" rules="groups" frame="hsides"> <table id="orge5d30f1" border="2" cellspacing="0" cellpadding="6" rules="groups" frame="hsides">
<colgroup> <colgroup>
@ -1657,8 +1657,8 @@ where \(\alpha\) and \(\beta\) denote $&uarr;$-spin and $&darr;$-spin electrons,
</div> </div>
</div> </div>
<div id="outline-container-org96965b3" class="outline-2"> <div id="outline-container-org0889db2" class="outline-2">
<h2 id="org96965b3"><span class="section-number-2">9</span> Excited states (state group)</h2> <h2 id="org0889db2"><span class="section-number-2">9</span> Excited states (state group)</h2>
<div class="outline-text-2" id="text-9"> <div class="outline-text-2" id="text-9">
<p> <p>
By default, the <code>determinant</code> group corresponds to the ground state. By default, the <code>determinant</code> group corresponds to the ground state.
@ -1667,7 +1667,7 @@ correspond to excited state wave functions for the same set of
determinants. This is the goal of the present group determinants. This is the goal of the present group
</p> </p>
<table id="org773cdae" border="2" cellspacing="0" cellpadding="6" rules="groups" frame="hsides"> <table id="orge042b4e" border="2" cellspacing="0" cellpadding="6" rules="groups" frame="hsides">
<colgroup> <colgroup>
@ -1706,8 +1706,8 @@ determinants. This is the goal of the present group
</div> </div>
</div> </div>
<div id="outline-container-orged44ed8" class="outline-2"> <div id="outline-container-orgbc74f20" class="outline-2">
<h2 id="orged44ed8"><span class="section-number-2">10</span> Reduced density matrices (rdm group)</h2> <h2 id="orgbc74f20"><span class="section-number-2">10</span> Reduced density matrices (rdm group)</h2>
<div class="outline-text-2" id="text-10"> <div class="outline-text-2" id="text-10">
<p> <p>
The reduced density matrices are defined in the basis of molecular The reduced density matrices are defined in the basis of molecular
@ -1760,7 +1760,7 @@ The total energy can be computed as:
\] \]
</p> </p>
<table id="orga8743a6" border="2" cellspacing="0" cellpadding="6" rules="groups" frame="hsides"> <table id="org3bf6972" border="2" cellspacing="0" cellpadding="6" rules="groups" frame="hsides">
<colgroup> <colgroup>
@ -1841,10 +1841,10 @@ The total energy can be computed as:
</div> </div>
</div> </div>
<div id="outline-container-orgc07dae2" class="outline-2"> <div id="outline-container-org585adb5" class="outline-2">
<h2 id="orgc07dae2"><span class="section-number-2">11</span> Cell (cell group)</h2> <h2 id="org585adb5"><span class="section-number-2">11</span> Cell (cell group)</h2>
<div class="outline-text-2" id="text-11"> <div class="outline-text-2" id="text-11">
<table id="org90740b8" border="2" cellspacing="0" cellpadding="6" rules="groups" frame="hsides"> <table id="orgd492386" border="2" cellspacing="0" cellpadding="6" rules="groups" frame="hsides">
<colgroup> <colgroup>
@ -1890,10 +1890,10 @@ The total energy can be computed as:
</div> </div>
</div> </div>
<div id="outline-container-orgf0e2c1d" class="outline-2"> <div id="outline-container-org53f1718" class="outline-2">
<h2 id="orgf0e2c1d"><span class="section-number-2">12</span> Periodic boundary calculations (pbc group)</h2> <h2 id="org53f1718"><span class="section-number-2">12</span> Periodic boundary calculations (pbc group)</h2>
<div class="outline-text-2" id="text-12"> <div class="outline-text-2" id="text-12">
<table id="org3b917d6" border="2" cellspacing="0" cellpadding="6" rules="groups" frame="hsides"> <table id="org428c623" border="2" cellspacing="0" cellpadding="6" rules="groups" frame="hsides">
<colgroup> <colgroup>
@ -1932,8 +1932,8 @@ The total energy can be computed as:
</div> </div>
</div> </div>
<div id="outline-container-org1140887" class="outline-2"> <div id="outline-container-org4265157" class="outline-2">
<h2 id="org1140887"><span class="section-number-2">13</span> Quantum Monte Carlo data (qmc group)</h2> <h2 id="org4265157"><span class="section-number-2">13</span> Quantum Monte Carlo data (qmc group)</h2>
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<p> <p>
In quantum Monte Carlo calculations, the wave function is evaluated In quantum Monte Carlo calculations, the wave function is evaluated
@ -1947,7 +1947,7 @@ By convention, the electron coordinates contain first all the electrons
of $&uarr;$-spin and then all the $&darr;$-spin. of $&uarr;$-spin and then all the $&darr;$-spin.
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<table id="org0dc4fe8" border="2" cellspacing="0" cellpadding="6" rules="groups" frame="hsides"> <table id="org184a78c" border="2" cellspacing="0" cellpadding="6" rules="groups" frame="hsides">
<colgroup> <colgroup>
@ -2002,7 +2002,7 @@ of $&uarr;$-spin and then all the $&darr;$-spin.
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<div id="postamble" class="status"> <div id="postamble" class="status">
<p class="author">Author: TREX-CoE</p> <p class="author">Author: TREX-CoE</p>
<p class="date">Created: 2022-06-03 Fri 07:50</p> <p class="date">Created: 2022-06-03 Fri 07:52</p>
<p class="validation"><a href="http://validator.w3.org/check?uri=referer">Validate</a></p> <p class="validation"><a href="http://validator.w3.org/check?uri=referer">Validate</a></p>
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